advertisement
OPERATING INSTRUCTIONS
MM-10 Miniature Subwoofer
MPS-488HP Power Supply
INDUSTRIAL SERIES
Keep these important operating instructions.
Check www.meyersound.com for updates.
DECLARATION OF CONFORMITY ACCORDING TO ISO/IEC GUIDE 22 AND EN 45014
Manufacturer’s Name: Meyer Sound Laboratories Inc.
Manufacturer’s Address: 2832 San Pablo Avenue
Berkeley, CA 94702-2204, USA
Declares that the product:
Product Names: MM-10 Miniature Subwoofer
MPS-488HP Power Supply
Product Options: All
Conforms to the following Product Specifications:
Safety: EN 60065:2002
EMC: EN55103-1: 1997 emission1
EN55103-2: 1997 immunity2
This device also complies with EN 55103-1 & -2. Operation is subject to the following 2 conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation
Supplementary Information: The product herewith complies with the requirements of the Low Voltage
Directive (LVD) 2006/95/EC and the EMC Directive 2004/108/EC.
Signature:
Ms. Margie Garza
Director of Quality
Meyer Sound Laboratories Inc.
Berkeley, California 94702 USA
Issued August 18, 2011
European Contact:
Your local Meyer Sound dealer or
Meyer Sound Germany, GmbH.
© 2010
Meyer Sound. All rights reserved.
MM-10 Operating Instructions, PN 05.199.005.01 B
The contents of this manual are furnished for informational purposes only, are subject to change without notice, and should not be construed as a commitment by Meyer Sound Laboratories Inc. Meyer Sound assumes no responsibility or liability for any errors or inaccuracies that may appear in this manual. Except as permitted by applicable copyright law, no part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording or otherwise, without prior written permission from Meyer Sound.
MM-10, MM-4XP, MPS-488HP, MPS-488, and all alpha-numeric designations for Meyer Sound products and accessories are trademarks of Meyer Sound. Meyer Sound and the Meyer Sound wave logo are registered trademarks of Meyer Sound Laboratories Inc. (Reg. U.S.
Pat. & Tm. Off.). All third-party trademarks mentioned herein are the property of their respective trademark holders.
ii
FEDERAL COMMUNICATIONS COMMISSION (FCC) STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult a Meyer Sound dealer or service representative for help.
Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. Proper cables and connectors are available from Meyer Sound authorized dealers.
Meyer Sound is not responsible for any radio or television interference caused by unauthorized changes or modifications to this equipment. Unauthorized changes or modifications could void the user's authority to operate this equipment.
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
INDUSTRY CANADA COMPLIANCE STATEMENT
This Class B digital apparatus complies with Canadian ICES-003.
AVIS DE CONFORMITÉ À LA RÉGLEMENTATION D'INDUSTRIE CANADA
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
iii
SYMBOLS USED
These symbols indicate important safety or operating features in this booklet and on the chassis:
!
Dangerous voltages: risk of electric shock
Pour indiquer les risques résultant de tensions dangereuses
Warnung vor gef ä hrlicher elektrischer Spannung
Para indicar voltajes peligrosos
Important operating instructions
Pour indequer important instructions
Wichtige Betriebsanweisung oder
Gebrauchsanleitung
Instrucciones importantes de funcionamiento y/o manteniento
Frame or chassis
Masse, châssis
Rahmen oder Geh ä use
Armadura o chassis
Protective earth ground
Terre de protection
Masse Schutzleiter
Tierra proteccionista
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this loudspeaker near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with Meyer Sound’s installation instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.
9. Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two blades and a third grounding prong. The third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the loudspeaker. The AC mains plug or appliance coupler shall remain readily accessible for operation.
11. Only use attachments/accessories specified by Meyer
Sound.
12. If applicable, use only with the caster rails or rigging specified by Meyer Sound, or sold with the loudspeaker.
Handles are for carrying only.
!
13. Unplug this loudspeaker during lightning storms or when unused for long periods of time.
14. Disconnect the mains plug before disconnecting the power cord from the loudspeaker.
15. Refer all servicing to qualified service personnel. Servicing is required when the loudspeaker has been damaged in any way, such as when the power-supply cord or plug has been damaged; liquid has been spilled or objects have fallen into the loudspeaker; rain or moisture has entered the loudspeaker; the loudspeaker has been dropped; or when for undetermined reasons the loudspeaker does not operate normally.
!
CAUTION: Rigging should only be done by experienced professionals.
CAUTION: To reduce the risk of electric shock, do not expose this loudspeaker to rain or moisture. Do not install the loudspeaker in wet or humid locations without using weather protection equipment from Meyer Sound.
iv
SAFETY SUMMARY
English
■ To reduce the risk of electric shock, disconnect the loudspeaker from the AC mains before installing audio cable.
Reconnect the power cord only after making all signal connections.
■
■
■
■
Connect the loudspeaker to a two-pole, three-wire grounding mains receptacle.
The receptacle must be connected to a fuse or circuit breaker. Connection to any other type of receptacle poses a shock hazard and may violate local electrical codes.
Do not install the loudspeaker in wet or humid locations without using weather protection equipment from Meyer
Sound.
Do not allow water or any foreign object to get inside the loudspeaker. Do not put objects containing liquid on or near the unit.
To reduce the risk of overheating the loudspeaker, avoid exposing it to direct sunlight. Do not install the unit near heat-emitting appliances, such as a room heater or stove.
■ This loudspeaker contains potentially hazardous voltages. Do not attempt to disassemble the unit. The unit contains no user-serviceable parts. Repairs should be performed only by factorytrained service personnel.
Français
■ Pour réduire le risque d’électrocution, débrancher la prise principale de l’hautparleur, avant d’installer le câble d’interface allant à l’audio. Ne rebrancher le bloc d’alimentation qu’après avoir effectué toutes les connections.
■ Branchez l’haut-parleur dans une prise de courant à 3 dérivations (deux pôles et la terre). Cette prise doit être munie d’une protection adéquate (fusible ou coupe-circuit). Le branchement dans tout autre genre de prise pourrait entraîner un risque d’électrocution et peut constituer une infraction à la réglementation locale concernant les installations électriques.
■
■
■
■
Ne pas installer l’haut-parleur dans un endroit où il y a de l’eau ou une humidité excessive.
Ne pas laisser de l’eau ou tout objet pénétrer dans l’haut-parleur. Ne pas placer de r´cipients contenant un liquide sur cet appareil, ni à proximité de celuici.
Pour éviter une surchauffe de l’hautparleur, conserver-la à l’abri du soleil.
Ne pas installer à proximité d’appareils dégageant de la chaleur tels que radiateurs ou appareils de chauffage.
Ce haut-parleur contient des circuits haute tension présentant un danger. Ne jamais essayer de le démonter. Il n’y a aucun composant qui puisse être réparé par l’utilisateur. Toutes les réparations doivent être effectuées par du personnel qualifié et agréé par le constructeur.
Deutsch
■ Um die Gefahr eines elektrischen
Schlages auf ein Minimum zu reduzieren, den Lautsprecher vom Stromnetz trennen, bevor ggf. ein Audio-Schnittstellensignalkabel angeschlossen wird.
Das Netzkabel erst nach Herstellung aller Signalverbindungen wieder einstecken.
■ Der Lautsprecher an eine geerdete zweipolige Dreiphasen-Netzsteckdose anschließen. Die Steckdose muß mit einem geeigneten Abzweigschutz
(Sicherung oder Leistungsschalter) verbunden sein. Der Anschluß der unterbrechungsfreien Stromversorgung an einen anderen Steckdosentyp kann zu
Stromschlägen führen und gegen die
örtlichen Vorschriften verstoßen.
■ Der Lautsprecher nicht an einem Ort aufstellen, an dem sie mit Wasser oder
übermäßig hoher Luftfeuchtigkeit in
Berührung kommen könnte.
■ Darauf achten, daß weder Wasser noch
Fremdkörper in das Innere den
Lautsprecher eindringen. Keine
Objekte, die Flüssigkeit enthalten, auf oder neben die unterbrechungsfreie
Stromversorgung stellen.
■
■
■
Um ein Überhitzen dem Lautsprecher zu verhindern, das Gerät vor direkter
Sonneneinstrahlung fernhalten und nicht in der Nähe von wärmeabstrahlenden
Haushaltsgeräten (z.B. Heizgerät oder
Herd) aufstellen.
Im Inneren diesem Lautsprecher herrschen potentiell gefährliche Spannungen. Nicht versuchen, das Gerät zu öffnen. Es enthält keine vom Benutzer reparierbaren Teile. Reparaturen dürfen nur von ausgebildetem Kundenienstpersonal durchgeführt werden.
Español
■ Para reducir el riesgo de descarga eléctrica, desconecte de la red de voltaje el altoparlante antes de instalar el cable de señal de audio. Vuelva a conectar la alimentacion de voltaje una vez efectuadas todas las interconexiones de señalizacion de audio.
■
■
■
■
Conecte el altoparlante a un tomacorriente bipolar y trifilar con neutro de puesta a tierra. El tomacorriente debe estar conectado a la protección de derivación apropiada (ya sea un fusible o un disyuntor). La conexión a cualquier otro tipo de tomacorriente puede constituir peligro de descarga eléctrica y violar los códigos eléctricos locales.
No instale el altoparlante en lugares donde haya agua o humedad excesiva.
No deje que en el altoparlante entre agua ni ningún objeto extraño. No ponga objetos con líquidos encima de la unidad ni cerca de ella.
Para reducir el riesgo de sobrecalentamiento, no exponga la unidad a los rayos directos del sol ni la instale cerca de artefactos que emiten calor, como estufas o cocinas.
■ Este altoparlante contiene niveles de voltaje peligrosos en potencia. No intente desarmar la unidad, pues no contiene piezas que puedan ser repardas por el usuario. Las reparaciones deben efectuarse únicamente por parte del personal de mantenimiento capacitado en la fábrica.
v
vi
CONTENTS
MM-10XP Current Draw and Cable Requirements
Wiring MM-10XP Loudspeaker Cables with Belden 1502 Cable
Chapter 3: Powering MM-10XP Subwoofers with the MPS-488HP
Connecting MM-10XP Subwoofers to the MPS-488HP
Powering MM-10XP Subwoofers with the Original MPS-488
MM-10AC Current Draw Requirements
MM-10ACX Current Draw Requirements
MM-10ACX Satellite Out Connectors
MM-10ACX Input Polarity Switch
MM-10ACX Satellite Configurations
Important Safety Considerations
vii
CONTENTS
Appendix B: Optional Rain Hoods
Appendix C: Phoenix and EN3 Cable Assembly
viii
CHAPTER 1: INTRODUCTION
HOW TO USE THIS MANUAL
Make sure to read these operating instructions in their entirety before configuring a loudspeaker system with
MM-10s. In particular, pay close attention to material related to safety issues.
As you read these operating instructions, you will encounter the following icons for notes, tips, and cautions:
MM-10 MINIATURE SUBWOOFER
The MM-10 miniature subwoofer delivers low frequency for applications that require excellent audio quality from a compact system. Designed primarily as a companion to Meyer
Sound's MM-4XP miniature loudspeaker, as well as the
UP-4XP ultracompact loudspeaker, the MM-10 allows system designers to create full-range systems where space limitations are a concern.
NOTE: A note identifies an important or useful piece of information relating to the topic under discussion.
TIP: A tip offers a helpful tip relevant to the topic at hand.
!
CAUTION: A caution gives notice that an action may have serious consequences and could cause harm to equipment or personnel, and could cause delays or other problems.
Information and specifications are subject to change.
Updates and supplementary information are available at www.meyersound.com
.
■
■
■
■
Meyer Sound Technical Support is available at:
Tel: +1 510 486.1166
Tel: +1 510 486.0657 (after hours support)
Web: www.meyersound.com/support
Email: [email protected]
MM-10 Miniature Subwoofer
The MM-10 features an operating frequency range of 33 Hz to 228 Hz with a conservatively rated maximum peak SPL of
123 dB. The MM-10 bass reflex cabinet houses a single 10inch driver and a single-channel power amplifier complete with onboard processing, including a crossover, driver protection, and frequency and phase correction. The built-in crossover accepts full-range signals, facilitating basic daisychaining for signal distribution, eliminating the need for external crossovers in small setups.
The MM-10 subwoofer is available from the factory in three models — the MM-10XP, MM-10AC, and MM-10ACX — each offering different internal configurations and audio and power connectors (which cannot be upgraded).
9
CHAPTER 1: INTRODUCTION
MM-10XP Subwoofer
The MM-10XP is powered by an external 48 V DC power supply, eliminating the need for wiring conduits while still preserving the advantages of self-powered loudspeaker systems. The unit's onboard amplifier and signal-processing circuits were designed to store DC power and tolerate voltage drops, thereby accommodating light-gauge cables and lengthy cable runs. The MM-10XP is available with either a
Phoenix™ 5-pin male or sealed SwitchCraft ® EN3™ male connector for receiving balanced audio and DC power. The
EN3 connector is ideal for outdoor, all-weather use.
MM-10ACX Subwoofer
The MM-10ACX model includes onboard DC power and audio routing for driving a pair of MM-4XP miniature loudspeakers, or a single UP-4XP ultracompact loudspeaker, effectively placing the MM-10ACX at the heart of an extremely capable compact, full-range loudspeaker system.
Three XLR female inputs are included for receiving audio for the subwoofer and two satellite loudspeakers. The
MM-10ACX is available with either Phoenix 5-Pin male or EN3
5-pin female satellite outputs. A two-channel stereo signal can be patched to the satellite inputs and summed and routed to the subwoofer if necessary.
MPS-488HP External Power Supply
MM-10XPs require an MPS-488HP external power supply.
The single-space 19-inch rack unit receives balanced audio from its XLR female inputs and routes the audio, along with
48 V of DC power, to its channel outputs. The channel outputs — equipped with either Phoenix 5-pin male connectors or EN3 5-pin female connectors — can deliver DC power to up to eight MM-10XP subwoofers.
MM-10 OPTIONS
Additional options for the MM-10 include the MUB-MM10
U-bracket for mounting the subwoofer on ceilings and walls; weather protection, complete with a rain hood, for outdoor all-weather use; and custom color finishes for installations and applications with specific cosmetic requirements.
MPS-488HP Power Supply
Cable lengths up to 150 feet for DC power are possible when using 18-AWG wire, with just 1 dB of loss in peak SPL.
Longer cable runs are possible for moderate applications that don't drive the subwoofers to maximum output, or for installations with heavier wire gauges.
The use of composite multiconductor cables (such as
Belden ® 1502) allows a single cable to carry both DC power and balanced audio to the MM-10XPs.
MM-10AC Subwoofer
The MM-10AC is ideal for fixed installations and portable applications where AC power is readily available to power the unit. The MM-10AC includes an internal power supply and locking PowerCon connectors for AC input and AC loop output (for powering additional MM-10AC subwoofers). The
MM-10AC receives audio from an XLR female input, and also includes an XLR male loop output for daisy-chaining audio signals.
MM-10 with MUB-MM10 U-Bracket
10
CHAPTER 2: MM-10XP SUBWOOFER
The MM-10XP is powered by an external 48 V DC power supply, eliminating the need for wiring conduits while still preserving the advantages of self-powered loudspeaker systems. The unit's onboard amplifier and signal-processing circuits were designed to store DC power and tolerate voltage drops, thereby accommodating light-gauge cables and lengthy cable runs.
MM-10XP INPUT CONNECTOR
The MM-10XP subwoofer is available with either a Phoenix
5-pin male or SwitchCraft EN3 5-pin male connector for receiving DC power and balanced audio. The EN3 connector is ideal for outdoor, all-weather use. The connector’s five pins include two for DC power (negative and positive) and three for balanced audio (shield, negative, and positive).
These pins are clearly labeled on the MM-10XP rear panel.
To function properly, the MM-10XP requires 48 V of DC power.
MM-10XP with Phoenix 5-Pin Male Connector
MM-10XP Rear Panel, Shown with Phoenix Connector
MM-10XP with EN3 5-Pin Male Connector
Depending on the subwoofer’s connector, the MM-10XP ships with either a single Phoenix cable connector or an
EN3-to-pigtail cable for constructing loudspeaker cables.
However, the MM-10XP EN3 connector has been rotated to accommodate the unit’s internal connections.
NOTE: The pin outputs for the MM-10XP EN3 connector is identical to that of the MM-4XP.
11
CHAPTER 2: MM-10XP SUBWOOFER
MM-10XP INPUT POLARITY SWITCH
The Input Polarity switch swaps the polarity of the audio source signal, which is sometimes necessary to acoustically align the subwoofer with other loudspeakers in the system.
When the switch is in the up (non-inverting) position, the positive audio pin (+) is hot relative to the negative audio pin (–), resulting in a positive pressure wave when a positive signal is applied to the positive pin. When the switch is in the down (inverting) position, the negative audio pin (–) is hot relative to the positive audio pin (+), resulting in a positive pressure wave when a positive signal is applied to the negative pin.
!
CAUTION: If the Limit LED turns red and stays solid red after powering up and the audio is muted, the subwoofer has encountered a failure and may need to be serviced. Contact Meyer Sound
Technical Support.
!
CAUTION: If the Limit LED turns solid red and the MM-10XP continues to output audio, though at reduced levels, the subwoofer’s voltage may have dropped below 25 V DC. When these conditions are encountered, operation of the subwoofer should cease and its power supply and cabling should be verified.
MM-10XP Input Polarity Switch
NOTE: The text for the Input Polarity switch on the MM-10XP rear panel shows Pin 2 and
Pin 3, which is the convention used for the MM-10AC and MM-10ACX models. However, the MM-10XP
Input Polarity switch actually reverses the polarity for
Pin 4 and Pin 5 of its input connector.
MM-10XP LIMIT LED
The MM-10XP has a three-color Limit LED on its rear panel that changes color to indicate the subwoofer’s status.
Limiting (Yellow)
Limiting activity is indicated when the Limit LED turns yellow. When engaged, the limiter protects the subwoofer’s driver and prevents signal peaks from causing excessive distortion in the subwoofer’s amplifier, thereby preserving headroom and maintaining smooth frequency responses at high levels. When the level returns to normal, below the limiter’s threshold, the LED turns green and limiting ceases.
■
■
The MM-10XP performs within its acoustical specifications at normal temperatures when the Limit LED is green, or if the
LED turns yellow for two seconds or less and then returns to green for at least one second. If the LED remains yellow for longer than three seconds, the subwoofer enters hard limiting where:
Increases to the input level have no effect.
Distortion increases due to clipping and nonlinear driver operation.
■ The drivers are subjected to excessive heat and excursion, which will compromise their life span and may eventually lead to damage over time.
MM-10XP Limit LED
!
CAUTION: The Limit LED turns yellow when the subwoofer’s signal rises 2 dB above the limiting threshold, and indicates a safe, optimum level has been exceeded. If the MM-10XP subwoofers in a system begin to limit before reaching the desired
SPL, consider adding more subwoofers to the system to achieve the desired SPL without exposing the subwoofers to excessive levels and possible overheating.
Powering On (Green)
When powering up the MM-10XP subwoofer, the following startup events occur and are indicated by the Limit LED:
1. The LED flashes green and then yellow during power up.
2. The LED turns solid green indicating the subwoofer is ready to reproduce audio.
12
MM-10 OPERATING INSTRUCTIONS
MM-10XP Temperature and Limiting
The Limit LED turns solid yellow when its heat sink temperature reaches 65° C (145° F), indicating the unit is reaching its maximum heat dissipation and a reduction in SPL is recommended. While the MM-10XP will continue to operate while the LED is yellow, the limiter threshold is lowered to a safe level (causing the output level to be lowered by 6 dB) to prevent the subwoofer from overheating. When the temperature of the heat sink cools to 50°C (122°F), the LED changes from yellow to green and the limiter threshold returns to normal.
Clipping (Red)
The Limit LED flashes red when its input signal causes the amplifier to overload. If the LED flashes red continuously, the subwoofer is severely overloaded and a reduction in the input level is recommended.
Cable Lengths and Cable Gauges for
MM-10XPs
When connecting an MM-10XP to an MPS-488HP channel output, you can use cable lengths of up to 150 feet with only
1 dB of peak SPL loss using 18 AWG wire. Longer cable lengths are possible with heavier wire gauges (see Table 1 and Table 2).
Table 1: MM-10XP Loudspeaker Cable Lengths (AWG)
Cable Gauge Resistance
(
/ft)
Approximate
Max. Length
12 AWG 0.0016
600 ft
14 AWG
16 AWG
18 AWG
20 AWG
0.00253
0.00402
0.00636
0.01008
375 ft
237 ft
150 ft
87 ft
!
CAUTION: If the Limit LED turns solid red and the subwoofer continues to output audio, though at reduced levels, the subwoofer’s voltage may have dropped below 25 V DC. When these conditions are encountered, operation of the subwoofer should cease and its power supply and cabling should be verified.
Table 2: MM-10XP Loudspeaker Cable Lengths (European)
Cable Gauge Resistance
(
/m)
Approximate
Max. Length
2.50 mm 2 0.0052
157 m
1.50 mm 2
1.00 mm 2
0.75 mm 2
0.01076
0.02087
0.03307
87 m
45 m
27 m
MM-10XP CURRENT DRAW AND CABLE
REQUIREMENTS
Each MM-10XP subwoofer draws a maximum current of
3.31 A average and 3.45 A peak from the 48 V DC output of the MPS-488HP. The current draw for the MM-10XP is dynamic and fluctuates as operating levels change. The cabling between the MM-10XP and the MPS-488HP adds resistance and hence causes a voltage drop at the subwoofer. Because lower DC voltages compromise amplifier performance (peak SPL), and in some cases frequency response, cable resistance should be kept to a minimum.
NOTE: When connecting an MM-10XP to an
MPS-488HP channel output, the total cable resistance should not exceed 2 ohms.
Calculating the Maximum Cable Length
The maximum cable length for an MM-10XP can be calculated with the following formula: maximum length = 2 ohms / 2 * cable resistance
For example, the maximum length of an 18 AWG cable with a resistance of 0.00636 is 157.2 feet (2 / 2 * 0.00636).
NOTE: For long cable runs, you can use a large cable gauge for DC power and a separate balanced audio cable for audio.
13
CHAPTER 2: MM-10XP SUBWOOFER
WIRING MM-10XP LOUDSPEAKER CABLES
WITH BELDEN 1502 CABLE
When wiring MM-10XP loudspeaker cables with Belden
1502 or an equivalent cable, use the conventions in Table 3.
The red and black wires in the Belden 1502 cable have a thicker gauge than the other three wires and should be used for DC power. The blue, white, and shield wires are shielded together and should be used for audio.
Red: DC power (+)
Black: DC power (–)
White: audio (+)
Blue: audio (–)
Audio shield
Belden 1502 Composite Cable
Table 3: Wiring MM-10XP Loudspeaker Cables with Belden 1502
Wire Gauge Gauge
Red
Black
DC power, positive (+)
DC power, negative (–)
18 AWG
18 AWG
White
Blue
Shield
Balanced audio, positive (+)
Balanced audio, negative (–)
Balanced audio, shield
22 AWG
22 AWG
24 AWG
Both ends of the loudspeaker cable should be wired so that the pins in the MM-10XP input connector align with those in
the MPS-488HP channel output connector (see “Channel
Wiring EN3-to-Pigtail Cables
MM-10XPs equipped with EN3 connectors are shipped with one 10-foot EN3 5-pin female-to-pigtail cable. The EN3 end of the cable connects directly to the MM-10XP input connector. The pigtail end of the cable can be equipped with either an EN3 5-pin male connector for connecting to the
MPS-488HPe power supply, or a Phoenix 5-pin female connector for connecting to the MPS-488HPp power supply.
The pigtail can also be spliced to a longer loudspeaker cable or to a junction box. The included EN3-to-pigtail cable uses a multiconductor cable, which can be wired for both DC power and balanced audio. The EN3-to-pigtail cable is available in plenum or regular (non-plenum) versions.
NOTE: For a complete list of cables and cable connectors available from Meyer Sound that can be used with the MM-10XP subwoofer and
MPS-488HP power supply, see Appendix A, “MM-10
14
CHAPTER 3: POWERING MM-10XP SUBWOOFERS WITH THE MPS-488HP
The MPS-488HP power supply delivers DC power and balanced audio to Meyer Sound loudspeakers that require a
48 V DC external power supply. The MPS-488HP is a multichannel, switched-mode, regulated power supply that occupies one space in a standard 19-inch rack. The MPS-488HP can power up to eight MM-10XP subwoofers.
MPS-488HP FRONT PANEL
The MPS-488HP front panel includes a power switch and
LEDs for monitoring each loudspeaker channel.
MPS-488HPp Power Supply Front Panel
AC Power
The MPS-488HP is powered on and off with the AC Power switch.
Voltage and Load Current LEDs (1–8)
The Voltage and Load Current LEDs are useful for verifying whether each channel output has voltage and whether the connected loudspeakers are receiving DC power and audio.
MPS-488HP Channel LEDs
Voltage LEDs (1–8)
The blue Voltage LEDs indicate whether voltage is present for each channel output. These LEDs should be lit when the
MPS-488HP is powered on. The MPS-488HP’s intelligent circuit protection shields connected loudspeakers from surges and shorts. The blue Voltage LEDs flash on and off when a surge or short is encountered. If a channel’s Voltage
LED flashes on and off, you should power down the
MPS-488HP and inspect the cabling for that channel.
MPS-488HPp with Eight MM-10XPs
NOTE: The MPS-488HP power supply is available in two models: the MPS-488HPp, which is equipped with Phoenix 5-pin male output connectors, and the MPS-488HPe, which is equipped with
EN3 5-pin female output connectors.
Load Current LEDs (1–8)
The green Load Current LEDs indicate whether a loudspeaker is connected to the channel and receiving power.
As a channel’s audio signal increases, its LED glows brighter. If an LED is not lit, check that the channel’s Voltage
LED is lit and verify the cable connection to the loudspeaker.
15
CHAPTER 3: POWERING MM-10XP SUBWOOFERS WITH THE MPS-488HP
MPS-488HP REAR PANEL
The MPS-488HP rear panel includes an AC Input connector, eight Channel Inputs for receiving source audio, eight Channel Outputs for delivering DC power and balanced audio, and seven Link switches for routing audio from inputs to outputs.
MPS-488HPp Power Supply Rear Panel
Link Switches
Link switches determine how Channel Inputs are routed to
Channel Outputs. When a Channel Input’s Link switch is
OFF (set to the down position), the input is only routed to its corresponding output: for example, Channel Input 1 routed to Channel Output 1. When a Link switch is ON (set to the up position), the input is routed to its corresponding output and the next adjacent output: for example, Channel Input 1 routed to Channel Output 1 and Channel Output 2. If multiple, adjacent Link switches are enabled, the input is routed to each adjacent output: for example, Channel Input 1 routed to Channel Outputs 1, 2, and 3.
MPS-488HPe Power Supply Rear Panel
AC Input
The MPS-488HP has a PowerCon twist-lock AC Input connector (line, neutral/line, earth). The connector can accept different power cord types for outlets used throughout the world. Make sure to use the correct power cord for the AC power in your area. The MPS-488HP operates at an AC voltage range of 100–240 V at 50–60 Hz.
MPS-488HP Link Switches
NOTE: Channel Inputs are inactive when the
Link switch for their preceding Channel Input is enabled. Connections should not be made to inactive
Channel Inputs.
Channel Inputs
Up to eight channels of balanced audio are received from the
MPS-488HP’s eight Channel Inputs. The inputs are equipped with XLR female connectors (pin 1, ground; pin 2, signal positive; pin 3, signal negative). Make sure to use standard balanced XLR cables with all three pins connected on both ends.
Routing Audio Inputs with the Link Switches
The following examples illustrate several common routing applications for the MPS-488HPp.
Routing One Input to Eight Outputs
To route one Channel Input to eight Channel Outputs:
■ Set all Link switches to ON.
Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7
On On On On On On On
MPS-488HP Channel Inputs
Channel Inputs default to being routed to their corresponding Channel Outputs but can also be routed to adjacent outputs with the Link switches, though this affects their input
impedance (see “Input Impedance for Linked Channel
1 2 3 4 5 6 7 8 1 1 1 1 1 1 1 1
16
MM-10 OPERATING INSTRUCTIONS
Routing Two Inputs to Four Outputs Each
To route two Channel Inputs to four Channel Outputs each:
1. Set the Link 4 switch to OFF and all other Link switches to ON.
Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7
On On On Off On On On
To avoid distortion when linking Channel Inputs, make sure the source device can drive the total load impedance of the linked MM-10XP subwoofers. The source device must be capable of delivering a minimum of 16 dBV (6.3 V rms into
600 ohms) to yield the maximum peak SPL over the operating bandwidth of the subwoofer.
NOTE: Most source devices are capable of driving loads no smaller than 10 times their output impedance. To drive eight MM-10XPs linked from a single Channel Input, the source device should have an output impedance of approximately
100 ohms or less.
1 2 3 4 5 6 7 8 1 1 1 1 5 5 5 5
Routing Eight Inputs to Eight Separate Outputs
To route eight Channel Inputs to eight separate Channel
Outputs:
■ Set all Link switches to OFF.
Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7
Off Off Off Off Off Off Off
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
■
■
■
■
Input Impedance for Linked Channel Inputs
When a Link switch is enabled, the Channel Input’s unbuffered source signal is transmitted in parallel to each linked
Channel Output. This causes the Channel Input’s impedance (normally 10 kOhms for one MM-10XP) to be reduced for each linked output. For example:
1 Channel Output, 10 kOhm input impedance
2 Channel Outputs, 5 kOhm input impedance
4 Channel Outputs, 2500 ohms input impedance
8 Channel Outputs, 1250 ohms input impedance
Channel Outputs
The MPS-488HP’s eight Channel Outputs deliver DC power
(48 V DC) and balanced audio to up to eight MM-10XPs. The channel outputs can be equipped with either Phoenix 5-pin male connectors (on the MPS-488HPp model) or EN3 5-pin male connectors (on the MPS-488HPe model).
NOTE: For information on MM-10XP cable
requirements, see “MM-10XP Current Draw and Cable Requirements” on page 13. For informa-
tion on cables and cable accessories available from
Meyer Sound, see Appendix A, “MM-10 Accessories.” For information on cable assembly, see
Appendix C, “Phoenix and EN3 Cable Assembly.”
TIP: A single composite cable (such as Belden
1502) wired for both DC power and balanced audio can be used to connect MM-10XPs to Channel
Outputs.
!
CAUTION: When wiring cable connections for the MPS-488HP channel outputs, it is extremely important that each pin in the connector is wired correctly. Make sure the 48 V DC from the
MPS-488HP is wired directly (and only) to the 48 V
DC pins on the MM-10XP connector, and that the polarity is observed (negative to negative, positive to positive) to avoid damage to the subwoofer. In addition, make sure the audio pins are wired correctly; polarity reversals for audio signals will affect system performance.
17
CHAPTER 3: POWERING MM-10XP SUBWOOFERS WITH THE MPS-488HP
MPS-488HPp Channel Outputs
The MPS-488HPp Channel Outputs use Phoenix 5-pin male connectors with three pins for balanced audio (positive, negative, and shield) and two for DC Power (positive and negative). These pins are clearly labeled on the MPS-488HPp rear panel.
MPS-488HPp Channel Outputs
Each MPS-488HPp comes with eight Phoenix 5-pin female cable connectors for assembling loudspeaker cables.
MPS-488HPe Channel Outputs
The MPS-488HPe Channel Outputs use EN3 5-pin female connectors with three pins for balanced audio (positive, negative, and shield) and two for DC Power (positive and negative). These pins are clearly labeled on the
MPS-488HPe rear panel.
MPS-488HPe Channel Outputs
Each MPS-488HPe comes with eight EN3 5-pin male cable connectors for assembling loudspeaker cables.
■ Idle Current — The maximum rms current during idle periods.
■ Maximum Long-Term Continuous Current — The maximum rms current during a period of at least 10 seconds. The Maximum Long-Term Continuous Current is used to calculate temperature increases for cables, to ensure that cable sizes and gauges conform to electrical code standards. This current rating is also used as a rating for slow-reacting thermal breakers.
■ Burst Current — The maximum rms current during a period of around one second. The Burst Current is used as a rating for magnetic breakers. It is also used for calculating the peak voltage drop in long AC cable runs according to the following formula:
■
V pk (drop) = I pk x R (cable total)
Ultimate Short-Term Peak Current — A rating for fastreacting magnetic breakers.
■ Inrush Current — The spike of initial current encountered when powering on.
You can use the following table as a guide for selecting cable gauges and circuit breaker ratings for the system’s operating voltage.
Current Draw for MPS-488HP with Eight MM-10XPs
Current Draw
(Eight MM-10XPs)
115
V AC
230
V AC
Idle Current
Maximum Long-Term
Continuous Current
0.74 A rms
3.08 A rms
0.54 A rms
1.49 A rms
Burst Current
Ultimate Short-Term
Peak Current
Inrush Current
5.48 A rms
9.56 A peak
20.0 A peak
100
V AC
0.81 A rms
3.46 A rms
3.21 A rms 5.57 A rms
4.96 A peak 10.28 A peak
20.0 A peak 20.0 A peak
MPS-488HP CURRENT DRAW
The current draw for the MPS-488HP and its connected loudspeakers is dynamic and fluctuates as operating levels change. Since different cables and circuit breakers heat up at varying rates, it is important to understand the following types of current ratings and how they affect circuit breaker and cable specifications.
The minimum electrical service amperage required by an
MPS-488HP is the sum of the Maximum Long-Term Continuous Current for all MM-10XPs connected to the MPS-488HP.
An additional 30 percent above the minimum amperage is recommended to prevent peak voltage drops at the service entry.
NOTE: For best performance, the AC cable voltage drop should not exceed 10 V, or
10 percent at 115 V and 5 percent at 230 V. Make sure that even with AC voltage drops that the AC voltage always remains within the operating window.
18
MM-10 OPERATING INSTRUCTIONS
SAFETY ISSUES
Pay close attention to these important electrical and safety issues.
■ The MPS-488HP requires a grounded outlet.
Earth ground
Chassis ground
CONNECTING MM-10XP SUBWOOFERS TO
THE MPS-488HP
To connect MM-10XP subwoofers to the MPS-488HP:
1. Power off the MPS-488HP.
2. Connect audio sources (from a mixer or processor) to the
MPS-488HP Channel Inputs. Use balanced XLR cables.
3. Use the MPS-488HP Link switches to route Channel
Inputs to the desired Channel Outputs (see “Link
4. Connect the MM-10XP subwoofers to the MPS-488HP
Channel Outputs. Use composite cables (such as
Belden 1502) wired for both DC power and balanced audio and outfitted with the appropriate connectors.
■ When connecting MM-10XP subwoofers equipped with
Phoenix connectors to the MPS-488HPp power supply, use Phoenix 5-pin male to Phoenix 5-pin female cables.
■ Do not use a ground-lifting adapter or cut the AC cable ground pin.
■ Keep all liquids away from the MPS-488HP to avoid hazards from electrical shock.
■ Do not operate the unit if the power cables are frayed or broken.
TIP: You can use two separate cables for
MM-10XP subwoofer connections: a 2-conductor cable for DC power and a 3-conductor cable for balanced audio, both attached to a single Phoenix connector on each cable end. This allows you to use
19
CHAPTER 3: POWERING MM-10XP SUBWOOFERS WITH THE MPS-488HP a larger gauge for the DC cable so you can achieve
longer cable runs (see “Cable Lengths and Cable
Gauges for MM-10XPs” on page 13).
■ When connecting MM-10XP subwoofers equipped with
EN3 connectors to the MPS-488HPe power supply, use
EN3 5-pin male to EN3 5-pin female cables.
5. Power on the MPS-488HP and monitor the LEDs on its
front panel to verify the connections (see “Voltage and
Load Current LEDs (1–8)” on page 15).
6. Check the LEDs on the MM-10XP rear panels and verify they are green (ready to reproduce audio).
7. Enable output from the audio sources (from the mixer or processor) connected to the MPS-488HP.
POWERING MM-10XP SUBWOOFERS WITH
THE ORIGINAL MPS-488
The original MPS-488 was designed for use with the
MM-4XP miniature loudspeaker. While the MPS-488 can power up to eight MM-4XPs, it can only power up to four
MM-10XPs (due to the MM-10XP’s higher power requirements and current draw).
MPS-488 P Power Supply
MPS-488 E Power Supply
■ To join two EN3 cables, one with an EN3 5-pin male cable mount connector to one with an EN3 5-pin female cable mount connector, use an EN3 5-pin female-tomale cable coupler (PN 28.163.033.01).
Because the MPS-488 can power a maximum of four
MM-10XPs, the MM-10XPs should only be connected to channel outputs 1, 3, 5, and 7. Do not use the even-numbered channel outputs.
!
CAUTION: Make sure MM-10XP loudspeaker cables are wired correctly. For details on
assembling loudspeaker cables, see Appendix C,
“Phoenix and EN3 Cable Assembly.”
20
CHAPTER 4: MM-10AC SUBWOOFER
The MM-10AC subwoofer includes an internal power supply and locking AC PowerCon connectors. The MM-10AC receives audio from an XLR female Audio In connector, and also includes an XLR male Audio Loop Out connector for daisy-chaining audio signals.
AC Input Connector (Blue)
The blue AC Input connector supplies power to the
MM-10AC. The input is rated at 20 amps and uses a
PowerCon3 AC mains locking connector that prevents accidental disconnections. A 10-foot AC power cable, rated at
15 amps, is included with each MM-10AC. If you replace the included AC power cable, make sure to use a cable with the appropriate power plug (on the other end) for the region in which you will operate the unit.
The AC Input connector also supplies power to any additional subwoofers connected to the MM-10AC’s gray AC
Loop Output connector. Each MM-10AC requires approximately 0.9 A rms maximum at 115 V AC and 0.4 A rms maximum at 230 V AC.
!
CAUTION: When using the included AC power cable, do not loop more than 15 additional
MM-10ACs from the AC Loop Output connector at
115 V (16 total for the circuit), and not more than 36 at 230 V (37 total for the circuit).
MM-10AC Rear Panel
MM-10AC AC CONNECTORS
The MM-10AC subwoofer combines advanced loudspeaker technology with equally advanced power capabilities.
Understanding voltage and current requirements, as well as electrical safety issues, is critical to the safe operation of the
MM-10AC. The MM-10AC rear user panel includes the following PowerCon AC connectors:
AC Loop Output Connector (Gray)
The gray AC Loop Output connector allows multiple
MM-10AC subwoofers to be looped and powered from a single power source. Connect the AC Loop Output of the first MM-10AC to the AC Input of the second MM-10AC, and so forth. The AC Loop Output uses a PowerCon3 AC mains locking connector that prevents accidental disconnections.
The maximum number of subwoofers that can be looped from the AC Loop Output connector is determined by the voltage of the power source, the current draw of the looped subwoofers, the circuit breaker rating, and the rating of the
AC power cable connected to the MM-10AC.
Table 4: Number of MM-10ACs that Can Be Looped
Circuit Breaker/
Connector Rating
115 V AC 230 V AC 100 V AC
15 amps 15 looped
(16 total)
36 looped
(37 total)
12 looped
(13 total)
MM-10AC AC Input (Left) and AC Loop Output (Right) Connectors NOTE: The current draw for the MM-10AC is dynamic and fluctuates as operating levels change. The numbers in Table 4 assume that operating levels are normal and not such that the subwoofers are constantly limiting.
21
CHAPTER 4: MM-10AC SUBWOOFER
Each MM-10AC ships with one AC looping connector for making AC looping cables. Assembled AC looping cables are available from Meyer Sound.
!
CAUTION: Do not exceed the current capability of the 20-amp Input connector for the
MM-10AC. When looping MM-10ACs, consider the total current draw for all units on the circuit, including the first.
POWER CONNECTOR WIRING
The MM-10AC requires a grounded outlet. To operate safely and effectively, it is extremely important that the entire system be properly grounded.
MM-10AC VOLTAGE REQUIREMENTS
The MM-10AC operates safely and continuously when the
AC voltage stays within 100–240 V AC at 50 or 60 Hz. The subwoofer allows any combination of voltage to GND (neutral-line-ground or line-line-ground).
If the voltage drops below 90 V (brownout), the MM-10AC uses stored power to continue operating temporarily; the subwoofer will shut down if the voltage does not rise above the low boundary before the stored power is used.
If the voltage rises above 264 V, the power supply could become damaged.
Blue = neutral
Brown = hot
!
CAUTION: The power source for the
MM-10AC should always operate within the required voltage range, at least a few volts from the upper and lower ranges. This will ensure that AC voltage variations from the service entry — or peak voltage drops due to cable runs — will not cause the subwoofer’s amplifiers to cycle on and off or cause damage to the power supply.
Yellow/green = earth ground
(chassis
AC Cable Wiring Scheme
When wiring international or special-purpose power connectors:
■ Connect the blue wire to the black terminal, or the terminal marked with an N.
■ Connect the brown wire to the red terminal, or the terminal marked with an L.
■ Connect the yellow and green wire to the green (or green and yellow) terminal, or the terminal marked with an E.
!
CAUTION: When creating AC power cables, it is important to preserve AC line polarity and connect the earth ground on both ends of the cable.
The MM-10AC requires a grounded connection.
Always use a grounded outlet and plug. It is extremely important that the system be properly grounded to operate safely and properly. Do not ground-lift the AC cable.
MM-10AC CURRENT DRAW REQUIREMENTS
The current draw for the MM-10AC is dynamic and fluctuates as operating levels change. Since different cables and circuit breakers heat up at varying rates, it is important to understand the following types of current ratings and how they affect circuit breaker and cable specifications.
■ Idle Current — The maximum rms current during idle periods.
■ Maximum Long-Term Continuous Current — The maximum rms current during a period of at least 10 seconds. The Maximum Long-Term Continuous Current is used to calculate temperature increases for cables, to ensure that cable sizes and gauges conform to electrical code standards. The current rating is also used as a rating for slow-reacting thermal breakers.
■ Burst Current — The maximum rms current during a period of around one second. The Burst Current is used as a rating for magnetic breakers. It is also used for calculating the peak voltage drop in long AC cable runs according to the following formula:
V pk (drop) = I pk x R (cable total)
The Burst Current can also be used to calculate the AC looping capability of the MM-10AC.
22
MM-10 OPERATING INSTRUCTIONS
■ Ultimate Short-Term Peak Current — A rating for fastreacting magnetic breakers.
■ Inrush Current — The spike of initial current encountered when powering on.
You can use the following table as a guide for selecting cable gauges and circuit breaker ratings for the system’s operating voltage.
MM-10AC Current Draw
Current Draw 115 V AC
Idle Current
Maximum Long-Term
Continuous Current
0.13 A rms
0.40 A rms
Burst Current
Ultimate Short-Term
Peak Current
Inrush Current
0.9 A rms
2.0 A peak
4.0 A peak
230 V AC
0.13 A rms
0.25 A rms
0.4 A rms
1.4 A peak
2.4 A peak
100 V AC
0.14 A rms
0.46 A rms
1.1 A rms
2.3 A peak
4.0 A peak
The minimum electrical service amperage required by an
MM-10AC subwoofer system is the sum of the Maximum
Long-Term Continuous Current for each unit. An additional
30 percent above the minimum amperage is recommended to prevent peak voltage drops at the service entry.
■ Do not use a ground-lifting adapter or cut the AC cable ground pin.
■ Do not exceed the current capability of the 20-amp AC
Input connector for the MM-10AC. When looping
MM-10ACs, consider the total current draw for all units on the circuit, including the first.
■ Make sure the AC power cable for the MM-10AC has the appropriate power plug (on the other end) for the area in which you will operate the unit. In addition, the AC power cable must be rated for the total current draw of all
MM-10ACs looped from the power source.
■ Do not operate the unit if the power cable is frayed or broken.
■ Keep all liquids away from the MM-10AC to avoid hazards from electrical shock.
NOTE: For the best performance, the AC cable voltage drop should not exceed 10 V, or
10 percent at 115 V and 5 percent at 230 V. Make sure that even with AC voltage drops that the AC voltage always remains within the operating window.
MM-10AC AUDIO CONNECTORS
The MM-10AC includes an XLR female Audio In connector and XLR male Audio Loop Out connector.
ELECTRICAL SAFETY ISSUES
Pay close attention to these important electrical and safety issues.
■ The MM-10AC requires a grounded outlet. Always use a grounded outlet and plug.
Earth ground
Chassis ground
MM-10AC Audio In and Audio Loop Out Connectors
Audio In Connector
The XLR female Audio In connector accepts balanced audio signals with an input impedance of 10 kOhm. The connector uses the following wiring:
■ Pin 1 — 220 kOhm to chassis and earth ground (ESD clamped)
■ Pin 2 — Signal (+)
23
CHAPTER 4: MM-10AC SUBWOOFER
■ Pin 3 — Signal (–)
■ Case — Earth (AC) ground and chassis
Pins 2 and 3 carry the input as a differential signal. Pin 1 is connected to earth through a 220 kOhm, 1000 pF, 15 V clamped network. This circuitry provides virtual ground lift for audio frequencies while allowing unwanted signals to bleed to ground. Make sure to use standard, balanced XLR audio cables with all three pins connected on both ends.
Telescopic grounding is not recommended, and shorting an input connector pin to the case may cause a ground loop, resulting in hum.
TIP: If unwanted noise or hiss is produced by the subwoofer, disconnect its input cable. If the noise stops, there is most likely nothing wrong with the subwoofer. To locate the source of the noise, check the audio cable, source audio, and AC power.
Audio Loop Out Connector
The XLR male Audio Loop Out connector allows multiple
MM-10AC subwoofers to be looped from a single audio source. For applications that require multiple MM-10ACs, connect the Audio Loop Out of the first unit to the Audio In of the second, and so forth.
NOTE: Most source devices are capable of driving loads no smaller than 10 times their output impedance.
!
CAUTION: Make sure that all cabling for looped subwoofers is wired correctly (Pin 1 to
Pin 1, Pin 2 to Pin 2, and so forth) to prevent the polarity from being reversed. If one or more subwoofers in a system have reversed polarity, frequency response and coverage will be significantly degraded.
MM-10AC INPUT POLARITY SWITCH
The Input Polarity switch swaps the polarity of the audio source signal, which is sometimes necessary to acoustically align the subwoofer with other loudspeakers in the system.
When the switch is in the up (+), non-inverting position, pin 2 is hot relative to pin 3, resulting in a positive pressure wave when a positive signal is applied to pin 2. When the switch is in the down (–), inverting position, pin 3 is hot relative to pin 2, resulting in a positive pressure wave when a positive signal is applied to pin 3.
NOTE: The order in which subwoofers are connected when looping audio signals is unimportant. The Audio Loop Out connector is wired in parallel to the Audio In connector and transmits the unbuffered source signal even when the MM-10AC is powered off.
MM-10AC Input Polarity Switch
To avoid distortion when looping multiple MM-10ACs, make sure the source device can drive the total load impedance of the looped subwoofers. In addition, the source device must be capable of delivering approximately 20 dBV (10 V rms into 600 ohms) to yield the maximum peak SPL over the entire operating bandwidth of the subwoofers. Most professional audio equipment can transmit these source levels.
To calculate the load impedance for the looped subwoofers, divide 10 kOhms (the input impedance for a single
MM-10AC) by the number of looped subwoofers. For example, the load impedance for 10 MM-10AC subwoofers is
1000 ohms (10 kOhms / 10). To drive this number of looped subwoofers, the source device should have an output impedance of 100 ohms or less. This same rule applies when looping MM-10AC subwoofers with other self-powered Meyer Sound loudspeakers.
NOTE: The Input Polarity switch only affects the subwoofer signal. It has no effect on the
Audio Loop Out signal.
MM-10AC LIMIT LED
The MM-10AC has a three-color Limit LED on its rear panel that changes color to indicate the subwoofer’s status.
MM-10AC Limit LED
24
MM-10 OPERATING INSTRUCTIONS
Powering On (Green)
When powering up the MM-10AC subwoofer, the following startup events occur and are indicated by the Limit LED:
1. The LED flashes green and then yellow during power up.
2. The LED turns solid green indicating the subwoofer is ready to reproduce audio.
!
CAUTION: If the Limit LED turns red and stays solid red after powering up and the audio is muted, the subwoofer has encountered a failure and may need to be serviced. Contact Meyer Sound
Technical Support.
tem to achieve the desired SPL without exposing the subwoofers to excessive levels and possible overheating.
MM-10AC Temperature and Limiting
The Limit LED turns solid yellow when its heat sink temperature reaches 65° C (145° F), indicating the unit is reaching its maximum heat dissipation and a reduction in SPL is recommended. While the MM-10AC will continue to operate while the LED is yellow, the limiter threshold is lowered to a safe level (causing the output level to be lowered by 6 dB) to prevent the subwoofer from overheating. When the temperature of the heat sink cools to 50°C (122°F), the LED changes from yellow to green and the limiter threshold returns to normal.
!
CAUTION: If the Limit LED turns solid red and the MM-10AC continues to output audio, though at reduced levels, the subwoofer’s voltage may have dropped below 90 V AC. When these conditions are encountered, operation of the subwoofer should cease and its power supply and cabling should be verified.
Clipping (Red)
The Limit LED flashes red when its input signal causes the amplifier to overload. If the LED flashes red continuously, the subwoofer is severely overloaded and a reduction in the input level is recommended.
Limiting (Yellow)
Limiting activity is indicated when the Limit LED turns yellow. When engaged, the limiter protects the subwoofer’s driver and prevents signal peaks from causing excessive distortion in the subwoofer’s amplifier, thereby preserving headroom and maintaining smooth frequency responses at high levels. When the level returns to normal, below the limiter’s threshold, the LED turns green and limiting ceases.
■
■
The MM-10AC performs within its acoustical specifications at normal temperatures when the Limit LED is green, or if the
LED turns yellow for two seconds or less and then returns to green for at least one second. If the LED remains yellow for longer than three seconds, the subwoofer enters hard limiting where:
Increases to the input level have no effect.
Distortion increases due to clipping and nonlinear driver operation.
■ The drivers are subjected to excessive heat and excursion, which will compromise their life span and may eventually lead to damage over time.
!
CAUTION: If the Limit LED turns solid red and the subwoofer continues to output audio, though at reduced levels, the subwoofer’s voltage may have dropped below 90 V AC. When these conditions are encountered, operation of the subwoofer should cease and its power supply and cabling should be verified.
!
CAUTION: The Limit LED turns yellow when the subwoofer’s signal rises 2 dB above the limiting threshold, and indicates a safe, optimum level has been exceeded. If the MM-10AC subwoofers in a system begin to limit before reaching the desired
SPL, consider adding more subwoofers to the sys-
25
CHAPTER 4: MM-10AC SUBWOOFER
26
CHAPTER 5: MM-10ACX SUBWOOFER
The MM-10ACX subwoofer includes onboard DC power and audio routing for driving satellite loudspeakers: up to two
MM-4XPs, or a single UP-4XP (due to its higher power requirements and current draw). Three independent XLR female Audio In connectors are provided for the subwoofer and satellite loudspeakers. Satellite Out connectors are available as either Phoenix 5-pin male or EN3 5-pin female.
The MM-10ACX also includes locking AC PowerCon connectors.
MM-10ACX AC CONNECTORS
The MM-10ACX subwoofer combines advanced loudspeaker technology with equally advanced power capabilities. Understanding voltage and current requirements, as well as electrical safety issues, is critical to the safe operation of the MM-10ACX. The MM-10ACX rear user panel includes the following PowerCon AC connectors:
MM-10ACX AC Input (Left) and AC Loop Output (Right) Connectors
MM-10ACX Rear Panel, Shown with Phoenix Satellite Connectors
The MM-10ACX is extremely versatile. It can be used as a standalone subwoofer or it can be connected to and used with satellite loudspeakers in several different configura-
tions. For more information, see “MM-10ACX Satellite Configurations” on page 34.
AC Input Connector (Blue)
The blue AC Input connector supplies power to the
MM-10ACX. The input is rated at 20 amps and uses a
PowerCon3 AC mains locking connector that prevents accidental disconnections. A 10-foot AC power cable, rated at
15 amps, is included with each MM-10ACX. If you replace the included AC power cable, make sure to use a cable with the appropriate power plug (on the other end) for the region in which you will operate the unit.
The AC Input connector also supplies power to any additional subwoofers connected to the MM-10ACX’s gray AC
Loop Output connector, as well as any loudspeakers connected to the Satellite Out connectors. Each MM-10ACX requires approximately 3 A rms maximum at 115 V AC and
1.5 A rms maximum at 230 V AC.
!
CAUTION: When using the included AC power cable, do not loop more than five additional
MM-10ACXs from the AC Loop Output connector at
115 V (six total for the circuit), and not more than 10 at 230 V (11 total for the circuit).
27
CHAPTER 5: MM-10ACX SUBWOOFER
AC Loop Output Connector (Gray)
The gray AC Loop Output connector allows multiple
MM-10ACX subwoofers to be looped and powered from a single power source. Connect the AC Loop Output of the first MM-10ACX to the AC Input of the second MM-10ACX, and so forth. The AC Loop Output uses a PowerCon3 AC mains locking connector that prevents accidental disconnections.
The maximum number of subwoofers that can be looped from the AC Loop Output connector is determined by the voltage of the power source, the current draw of the looped subwoofers and any connected satellite loudspeakers, the circuit breaker rating, and the rating of the AC power cable connected to the MM-10ACX.
Table 5: Number of MM-10ACXs that Can Be Looped (with Two
MM-4XP Satellite Loudspeakers Attached to Each MM-10ACX)
Circuit Breaker/
Connector Rating
115 V AC 230 V AC 100 V AC
15 amps 5 looped
(6 total)
10 looped
(11 total)
4 looped
(5 total)
NOTE: The current draw for the MM-10ACX is dynamic and fluctuates as operating levels change. The numbers in Table 5 assume that operating levels are normal and not such that the subwoofers and satellite loudspeakers are constantly limiting.
POWER CONNECTOR WIRING
The MM-10ACX requires a grounded outlet. To operate safely and effectively, it is extremely important that the entire system be properly grounded.
Blue = neutral
Brown = hot
Yellow/green = earth ground
(chassis
AC Cable Wiring Scheme
When wiring international or special-purpose power connectors:
■ Connect the blue wire to the black terminal, or the terminal marked with an N.
■ Connect the brown wire to the red terminal, or the terminal marked with an L.
■ Connect the yellow and green wire to the green (or green and yellow) terminal, or the terminal marked with an E.
Each MM-10ACX ships with one AC looping connector for making AC looping cables. Assembled AC looping cables are available from Meyer Sound.
!
CAUTION: Do not exceed the current capability of the 20-amp Input connector for the
MM-10ACX. When looping MM-10ACXs, consider the total current draw for all subwoofers and satellite loudspeakers on the circuit.
!
CAUTION: When creating AC power cables, it is important to preserve AC line polarity and connect the earth ground on both ends of the cable.
The MM-10ACX requires a grounded connection.
Always use a grounded outlet and plug. It is extremely important that the system be properly grounded to operate safely and properly. Do not ground-lift the AC cable.
MM-10ACX VOLTAGE REQUIREMENTS
The MM-10ACX operates safely and continuously when the
AC voltage stays within 100–240 V AC at 50 or 60 Hz. The subwoofer allows any combination of voltage to GND (neutral-line-ground or line-line-ground).
If the voltage drops below 90 V (brownout), the MM-10ACX uses stored power to continue operating temporarily; the subwoofer will shut down if the voltage does not rise above the low boundary before the stored power is used.
If the voltage rises above 264 V, the power supply could become damaged.
28
MM-10 OPERATING INSTRUCTIONS
!
CAUTION: The power source for the
MM-10ACX should always operate within the required voltage range, at least a few volts from the upper and lower ranges. This will ensure that AC voltage variations from the service entry — or peak voltage drops due to cable runs — will not cause the subwoofer’s amplifiers to cycle on and off or cause damage to the power supply.
MM-10ACX CURRENT DRAW
REQUIREMENTS
The current draw for the MM-10ACX is dynamic and fluctuates as operating levels change. Since different cables and circuit breakers heat up at varying rates, it is important to understand the following types of current ratings and how they affect circuit breaker and cable specifications.
■ Idle Current — The maximum rms current during idle periods.
■ Maximum Long-Term Continuous Current — The maximum rms current during a period of at least 10 seconds. The Maximum Long-Term Continuous Current is used to calculate temperature increases for cables, to ensure that cable sizes and gauges conform to electrical code standards. The current rating is also used as a rating for slow-reacting thermal breakers. In addition, the
Maximum Long-Term Continuous Current can be used to calculate the AC looping capability of the MM-10ACX.
■ Burst Current — The maximum rms current during a period of around one second. The Burst Current is used as a rating for magnetic breakers. It is also used for calculating the peak voltage drop in long AC cable runs according to the following formula:
V pk (drop) = I pk x R (cable total)
The Burst Current can also be used to calculate the AC looping capability of the MM-10ACX.
■ Ultimate Short-Term Peak Current — A rating for fastreacting magnetic breakers.
■ Inrush Current — The spike of initial current encountered when powering on.
You can use the following tables as a guide for selecting cable gauges and circuit breaker ratings for the system’s operating voltage.
MM-10ACX Current Draw with No Satellite Loudspeakers
Current Draw 115 V AC 230 V AC 100 V AC
Idle Current
Maximum Long-Term
Continuous Current
0.21 A rms
0.48 A rms
0.20 A rms
0.31 A rms
0.23 A rms
0.55 A rms
Burst Current
Ultimate Short-Term
Peak Current
Inrush Current
1.1 A rms
2.2 A peak
6.6 A peak
0.6 A rms
1.6 A peak
3.7 A peak
1.3 A rms
2.5 A peak
7.2 A peak
MM-10ACX Current Draw with Two MM-4XP Satellite
Loudspeakers Attached
Current Draw 115 V AC 230 V AC 100 V AC
Idle Current
Maximum Long-Term
Continuous Current
0.32 A rms
0.90 A rms
0.26 A rms
0.51 A rms
0.36 A rms
1.02 A rms
Burst Current
Ultimate Short-Term
Peak Current
Inrush Current
2.5 A rms
4.5 A peak
7.6 A peak
1.3 A rms
2.8 A peak
4.4 A peak
3.0 A rms
5.0 A peak
8.4 A peak
The minimum electrical service amperage required by an
MM-10ACX subwoofer system is the sum of the Maximum
Long-Term Continuous Current for each unit. An additional
30 percent above the minimum amperage is recommended to prevent peak voltage drops at the service entry.
NOTE: For the best performance, the AC cable voltage drop should not exceed 10 V, or
10 percent at 115 V and 5 percent at 230 V. Make sure that even with AC voltage drops that the AC voltage always remains within the operating window.
29
CHAPTER 5: MM-10ACX SUBWOOFER
ELECTRICAL SAFETY ISSUES
Pay close attention to these important electrical and safety issues.
■ The MM-10ACX requires a grounded outlet. Always use a grounded outlet and plug.
MM-10ACX AUDIO IN CONNECTORS
The MM-10ACX includes three XLR female Audio In connectors for Satellite 1, Satellite 2, and Subwoofer.
Earth ground
MM-10ACX Audio In Connectors: Satellite 1, Satellite 2, and Subwoofer
■
Chassis ground
Do not use a ground-lifting adapter or cut the AC cable ground pin.
■ Do not exceed the current capability of the 20-amp AC
Input connector for the MM-10ACX. When looping
MM-10ACXs, consider the total current draw for all units on the circuit, including the first.
■ Make sure the AC power cable for the MM-10ACX has the appropriate power plug (on the other end) for the area in which you will operate the unit. In addition, the
AC power cable must be rated for the total current draw of all MM-10ACXs looped from the power source.
■ Do not operate the unit if the power cable is frayed or broken.
■ Keep all liquids away from the MM-10ACX to avoid hazards from electrical shock.
The XLR female Audio In connectors accept balanced audio signals with an input impedance of 10 kOhm. The connectors use the following wiring:
■ Pin 1 — 220 kOhm to chassis and earth ground (ESD clamped)
■
■
■
Pin 2 — Signal (+)
Pin 3 — Signal (–)
Case — Earth (AC) ground and chassis
Pins 2 and 3 carry the input as a differential signal. Pin 1 is connected to earth through a 220 kOhm, 1000 pF, 15 V clamped network. This circuitry provides virtual ground lift for audio frequencies while allowing unwanted signals to bleed to ground. Make sure to use standard, balanced XLR audio cables with all three pins connected on both ends.
Telescopic grounding is not recommended, and shorting an input connector pin to the case may cause a ground loop, resulting in hum.
TIP: If unwanted noise or hiss is produced by the subwoofer, disconnect its input cable. If the noise stops, there is most likely nothing wrong with the subwoofer. To locate the source of the noise, check the audio cable, source audio, and AC power.
30
MM-10 OPERATING INSTRUCTIONS
MM-10ACX SATELLITE OUT CONNECTORS
The Satellite Out connectors deliver DC power (48 V DC) and balanced audio to satellite loudspeakers: up to two
MM-4XPs, or a single UP-4XP (due to its higher power requirements and current draw). The source audio for the satellite loudspeakers is received from the MM-10ACX’s
Audio 1 In and Audio 2 In connectors. The DC power for the satellite loudspeakers is generated by the MM-10ACX’s onboard DC power capabilities.
The Satellite Outs can be equipped with either Phoenix 5pin male connectors or EN3 5-pin female connectors.
EN3 Outputs
The MM-10ACX Satellite Outs are available as EN3 5-pin female connectors with three pins for balanced audio (positive, negative, and shield) and two pins for DC Power (positive and negative). These pins are clearly labeled on the
MM-10ACX rear panel. A single composite cable (such as
Belden 1502) wired for both DC power and balanced audio can be used to connect to each satellite loudspeaker.
!
CAUTION: When wiring cable connections for the Satellite Outs, it is extremely important that each pin in the connector is wired correctly. Make sure the 48 V DC from the MM-10ACX is wired directly (and only) to the 48 V DC pins on the connector for the satellite loudspeaker, and that the polarity is observed (negative to negative, positive to positive) to avoid damage to the loudspeaker. In addition, make sure the audio pins are wired correctly; polarity reversals for audio signals can affect system performance.
Phoenix Outputs
The MM-10ACX Satellite Outs are available as Phoenix 5pin male connectors with three pins for balanced audio
(positive, negative, and shield) and two pins for DC Power
(positive and negative). These pins are clearly labeled on the
MM-10ACX rear panel. A single composite cable (such as
Belden 1502) wired for both DC power and balanced audio can be used to connect to each satellite loudspeaker.
MM-10ACX Satellite Outs, EN3
When equipped with EN3 Satellite Outs, the MM-10ACX comes with EN3 5-pin male cable connectors for assembling loudspeaker cables. For information on cable requirements for the satellite loudspeaker, refer to its operating instructions. For information on cables and cable accesso-
ries available from Meyer Sound, see Appendix A, “MM-10
Accessories.” For information on cable assembly, see
Appendix C, “Phoenix and EN3 Cable Assembly.”
MM-10ACX INPUT SELECT SWITCH
The Input Select switch determines the audio source signal for the subwoofer. When the switch is in the down position
(SUB CH), the source signal is received from the Subwoofer
Audio In connector. When the switch is in the up position
(SUM CH 1 + 2), the source signal is received from the
Satellite 1 and Satellite 2 Audio In connectors and is summed.
MM-10ACX Satellite Outs, Phoenix
When equipped with Phoenix Satellite Outs, the MM-10ACX comes with Phoenix 5-pin female cable connectors for assembling loudspeaker cables. For information on cable requirements for the satellite loudspeaker, refer to its operating instructions. For information on cables and cable acces-
sories available from Meyer Sound, see Appendix A,
“MM-10 Accessories.” For information on cable assembly,
see Appendix C, “Phoenix and EN3 Cable Assembly.”
MM-10ACX Input Select Switch
31
CHAPTER 5: MM-10ACX SUBWOOFER
NOTE: The Input Select switch is only included on the MM-10ACX model. The switch only affects the subwoofer signal and has no effect on the
Satellite Outs.
Input Select Switch and Summing
When the Input Select switch is in the up position (SUM
CH 1 + 2), the source signal that is routed to the subwoofer from the Satellite Audio Ins is attenuated.
■ If audio signals are present at both Satellite Audio Ins, the signal is summed and attenuated by 6 dB, resulting in a net gain of 0 dB.
■ If only a single audio signal is present at one of the Satellite Audio Ins, the signal is also attenuated by 6 dB. But this time the result is a net gain of -6 dB.
MM-10ACX INPUT POLARITY SWITCH
The Input Polarity switch swaps the polarity of the audio source signal, which is sometimes necessary to acoustically align the subwoofer with other loudspeakers in the system.
When the switch is in the up (+) position, pin 2 is hot relative to pin 3, resulting in a positive pressure wave when a positive signal is applied to pin 2. When the switch is in the down (–) position, pin 3 is hot relative to pin 2, resulting in a positive pressure wave when a positive signal is applied to pin 3.
MM-10ACX GAIN KNOB
The Gain knob adjust the subwoofer signal from completely attenuated to +10 dB and can be used to the balanced the subwoofer output with that of the satellite loudspeakers.
The Gain knob is always active, regardless of the Input
Select switch setting.
MM-10ACX Input Polarity Switch
NOTE: The Input Polarity switch only affects the subwoofer signal. It has no effect on the
Satellite Outs.
MM-10ACX LIMIT LED
The MM-10ACX has a three-color Limit LED on its rear panel that changes color to indicate the subwoofer’s status.
MM-10ACX Gain Knob
NOTE: The Gain knob is only included on the
MM-10ACX model. The knob only affects the subwoofer signal and has no effect on the Satellite
Outs.
MM-10ACX Limit LED
Powering On (Green)
When powering up the MM-10ACX subwoofer, the following startup events occur and are indicated by the Limit LED:
1. The LED flashes green and then yellow during power up.
2. The LED turns solid green indicating the subwoofer is ready to reproduce audio.
32
MM-10 OPERATING INSTRUCTIONS
!
CAUTION: If the Limit LED turns red and stays solid red after powering up and the audio is muted, the subwoofer has encountered a failure and may need to be serviced. Contact Meyer Sound
Technical Support.
!
CAUTION: If the Limit LED turns solid red and the MM-10ACX continues to output audio, though at reduced levels, the subwoofer’s voltage may have dropped below 90 V AC. When these conditions are encountered, operation of the subwoofer should cease and its power supply and cabling should be verified.
MM-10ACX Temperature and Limiting
The Limit LED turns solid yellow when its heat sink temperature reaches 65° C (145° F), indicating the unit is reaching its maximum heat dissipation and a reduction in SPL is recommended. While the MM-10ACX will continue to operate while the LED is yellow, the limiter threshold is lowered to a safe level (causing the output level to be lowered by 6 dB) to prevent the subwoofer from overheating. When the temperature of the heat sink cools to 50°C (122°F), the LED changes from yellow to green and the limiter threshold returns to normal.
Limiting (Yellow)
Limiting activity is indicated when the Limit LED turns yellow. When engaged, the limiter protects the subwoofer’s driver and prevents signal peaks from causing excessive distortion in the subwoofer’s amplifier, thereby preserving headroom and maintaining smooth frequency responses at high levels. When the level returns to normal, below the limiter’s threshold, the LED turns green and limiting ceases.
■
■
The MM-10ACX performs within its acoustical specifications at normal temperatures when the Limit LED is green, or if the
LED turns yellow for two seconds or less and then returns to green for at least one second. If the LED remains yellow for longer than three seconds, the subwoofer enters hard limiting where:
Increases to the input level have no effect.
Distortion increases due to clipping and nonlinear driver operation.
■ The drivers are subjected to excessive heat and excursion, which will compromise their life span and may eventually lead to damage over time.
Clipping (Red)
The Limit LED flashes red when its input signal causes the amplifier to overload. If the LED flashes red continuously, the subwoofer is severely overloaded and a reduction in the input level is recommended.
!
CAUTION: If the Limit LED turns solid red and the subwoofer continues to output audio, though at reduced levels, the subwoofer’s voltage may have dropped below 90 V AC. When these conditions are encountered, operation of the subwoofer should cease and its power supply and cabling should be verified.
!
CAUTION: The Limit LED turns yellow when the subwoofer’s signal rises 2 dB above the limiting threshold, and indicates a safe, optimum level has been exceeded. If the MM-10ACX subwoofers in a system begin to limit before reaching the desired
SPL, consider adding more subwoofers to the system to achieve the desired SPL without exposing the subwoofers to excessive levels and possible overheating.
33
CHAPTER 5: MM-10ACX SUBWOOFER
MM-10ACX SATELLITE CONFIGURATIONS
Single Channel
Satellite 1 Out to MM-4XP (or UP-4XP)
(Balanced audio, 48 V DC)
Balanced audio, single channel, to
Audio In Satellite 1
AC power to AC Input
MM-10ACX Single-Channel Satellite System (Shown with EN3 Connectors)
To configure a single-channel satellite system with one
MM-10ACX and either one MM-4XP or one UP-4XP:
1. Connect a single audio signal to Audio In for Satellite 1 on the MM-10ACX.
2. Connect Satellite 1 Out from the MM-10ACX to the loudspeaker input of the MM-4XP or UP-4XP.
3. Set the Input Select switch on the MM-10ACX to
SUM CH 1+2 (up).
4. If necessary, to accommodate for the placement of the subwoofer and satellite loudspeaker, adjust the Input
Polarity switch and Gain knob on the MM-10ACX.
NOTE: The MM-10ACX can power up to two
MM-4XPs, or a single UP-4XP (due to its higher power requirements and current draw).
34
MM-10 OPERATING INSTRUCTIONS
Dual Channel
Satellite 1 Out and
Satellite 2 Out to MM-4XPs
(Balanced audio, 48 V DC)
Balanced audio, dual channels, to
Satellite 1 Audio In and Satellite 2 Audio In
AC power to AC Input
MM-10ACX Dual-Channel Satellite System (Shown with EN3 Connectors)
To configure a dual-channel satellite system with one
MM-10ACX and two MM-4XPs:
1. Connect the left audio signal to Audio In for Satellite 1 on the MM-10ACX.
2. Connect the right audio signal to Audio In for Satellite 2 on the MM-10ACX.
3. Connect the Satellite 1 Out from the MM-10ACX to the loudspeaker input of left MM-4XP.
4. Connect the Satellite 2 Out from the MM-10ACX to the loudspeaker input of the right MM-4XP.
5. Set the Input Select switch on the MM-10ACX to
SUM CH 1+2 (up).
6. If necessary, to accommodate for the placement of the subwoofer and satellite loudspeakers, adjust the Input
Polarity switch and Gain knob on the MM-10ACX.
35
CHAPTER 5: MM-10ACX SUBWOOFER
Dual Channel + Sub Channel (2.1)
Satellite 1 Out and
Satellite 2 Out to MM-4XPs
(Balanced audio, 48 V DC) Balanced audio, dual channels, to
Satellite 1 Audio In and Satellite 2 Audio In
Balanced audio, single channel, to Subwoofer
Audio In
AC power to AC Input
MM-10ACX Dual Channel + Sub Channel System (Shown with EN3 Connectors)
To configure a 2.1 satellite system with one MM-10ACX and two MM-4XPs:
1. Connect the left audio signal to Audio In for Satellite 1 on the MM-10ACX.
2. Connect the right audio signal to Audio In for Satellite 2 on the MM-10ACX.
3. Connect the subwoofer audio signal to the Subwoofer
Audio In on the MM-10ACX.
4. Connect the Satellite Out 1 from the MM-10ACX to the loudspeaker input of left MM-4XP.
5. Connect the Satellite Out 2 from the MM-10ACX to the loudspeaker input of the right MM-4XP.
6. Set the Input Select switch on the MM-10ACX to
SUB CH (down).
7. If necessary, to accommodate for the placement of the subwoofer and satellite loudspeakers, adjust the Input
Polarity switch and Gain knob on the MM-10ACX.
36
CHAPTER 6: MOUNTING THE MM-10
The MM-10 is available with top and side nut plates with either 3/8"-16 or metric M10 threaded nuts. The optional
MUB-MM10 u-bracket mounts the MM-10 on ceilings and walls at adjustable angles.
IMPORTANT SAFETY CONSIDERATIONS
When installing Meyer Sound loudspeakers, the following precautions should always be observed:
■ All Meyer Sound products must be used in accordance with local, state, federal, and industry regulations. It is the owner’s and user’s responsibility to evaluate the reliability of any rigging or mounting method for their application. Rigging should only be carried out by experienced professionals.
■ Use mounting and rigging hardware that has been rated to meet or exceed the weight being hung.
■ Make sure to attach mounting hardware to the building's structural components (studs or joists), and not just to the wall surface. Verify that the building's structure and the anchors used for the installation will safely support the total weight of the mounted loudspeakers.
■ Use mounting hardware appropriate for the surface where the loudspeaker will be installed.
■ Make sure bolts are tightened securely. Meyer Sound recommends using Loctite ® on bolt threads and safety cables.
■ Inspect mounting and rigging hardware regularly. Immediately replace any worn or damaged components.
MUB-MM10 U-BRACKET
The MUB-MM10 U-bracket mounts the MM-10 on ceilings and walls at adjustable angles. The U-bracket’s adjustment slot lets you adjust how close the MM-10 is located to the mounting surface and at what angle the subwoofer will be positioned. The MUB-MM10 is available in two kits with either 3/8"-16 hardware (PN 40.199.060.01) or M10 hardware (PN 40.199.060.02).
MUB-MM10 U-Bracket
Ceiling-Mounting with the MUB-MM10
The MM-10 can be mounted on a ceiling or underbalcony area with the MUB-MM10 U-bracket.
MUB-MM10, Ceiling-Mounted
37
CHAPTER 6: MOUNTING THE MM-10
Wall-Mounting with the MUB-MM10
The MUB-MM10 U-bracket lets you mount the MM-10 either vertically or horizontally on a wall.
MUB-MM10, Horizontal Wall Mount
38
APPENDIX A: MM-10 ACCESSORIES
MM-10 ACCESSORIES
The following MM-10 accessories are available from Meyer Sound.
MM-10 Accessories
Part Number Accessory
09.183.001.01
09.183.001.02
MPS-488HPp external power supply
(with US power cord)
MPS-488HPp external power supply
(with CE power cord)
09.183.001.03
09.183.001.04
MPS-488HPe external power supply
(with US power cord)
MPS-488HPe external power supply
(with CE power cord)
Notes
Channel Outputs equipped with Phoenix
5-pin male connectors; use with MM-10XPs equipped with Phoenix connectors
Channel Outputs equipped with EN3 5-pin female connectors; use with MM-10XPs equipped with EN3 connectors
40.199.060.01
40.199.060.02
40.174.015.01
40.174.015.02
MUB-MM10 U-bracket
MUB-MM10 U-bracket
Horizontal rain hood kit
Vertical rain hood kit
With 3/8”-16 hardware.
With M10 hardware.
Included with weather-protected MM-10s.
Only recommended for use with weather-protected MM-10s.
PHOENIX AND EN3 CABLE CONNECTORS AND ADAPTERS
The following Phoenix and EN3 cable connectors and adapters are available from Meyer Sound.
Phoenix and EN3 Cable Connectors and Adapters
Part Number Connector/Adapter
484.065
Use
Phoenix 5-pin female cable mount connector
Connects to MM-10XPs equipped with Phoenix connectors, and MPS-488HPp Channel
Outputs
468.069
EN3 5-pin female cable mount connector
468.071
EN3 5-pin male cable mount connector
Connects to MM-10XPs equipped with EN3 connectors
Connects to MPS-488HPe Channel Outputs
468.072
468.073
28.163.033.01
EN3 5-pin female inline cable adapter
EN3 5-pin male inline cable adapter
Cable coupler EN3 5-pin female-to-male
Connects to EN3 5-pin male cable mount connectors
Connects to EN3 5-pin female cable mount connectors
Joins two cables: one with an EN3 5-pin male cable mount connector to one with an EN3
5-pin female cable mount connector
39
APPENDIX A: MM-10 ACCESSORIES
PHOENIX AND EN3 LOUDSPEAKER CABLES
The following Phoenix and EN3 cables are available from Meyer Sound and can be used to connect MM-10XPs to
MPS-488HPs, as well as to connect MM-10ACXs to satellite loudspeakers.
NOTE: Phoenix and EN3 loudspeaker cables and bulk cable use Belden 1502R (regular) or Belden 1502P (plenum) cable. Belden 1502 is a composite cable comprised of two 18 AWG wires for DC power, two 22 AWG wires for balanced audio, and one 24 AWG wire for audio shield.
Phoenix and EN3 Loudspeaker Cables
Part Number Cable
524.014
524.015
Bulk (no connectors)
Bulk (no connectors)
28.163.009.01
28.163.009.11
28.163.009.21
28.163.009.22
EN3 5-pin female to pigtail
EN3 5-pin female to pigtail
EN3 5-pin female to EN3 5-pin male
28.163.009.23
28.163.009.24
28.163.009.25
28.163.009.26
28.163.009.31
28.163.009.32
28.163.009.33
28.163.009.34
28.163.009.35
28.163.009.36
28.163.033.01
EN3 5-pin female to EN3 5-pin male
Color
Black
White
Black
White
Black
White
Coating
Regular
Plenum
Regular
Plenum
Regular
Plenum
50 ft
100 ft
150 ft
10 ft
20 ft
30 ft
50 ft
100 ft
EN3 5-pin female to Phoenix 5-pin female Black Regular
150 ft
Cable coupler EN3 5-pin female-to-male (joins two cables: one with an EN3 5-pin male cable mount connector to one with an EN3 5-pin female cable mount connector)
10 ft
20 ft
28.163.009.41
28.163.009.42
28.163.009.43
28.163.009.44
28.163.009.45
28.163.009.46
28.163.009.51
28.163.009.52
EN3 5-pin female to Phoenix 5-pin female White Plenum
Length
500 ft spool
500 ft spool
10 ft
10 ft
10 ft
20 ft
30 ft
28.163.009.53
28.163.009.54
28.163.009.55
28.163.033.01
30 ft
50 ft
100 ft
150 ft
10 ft
20 ft
30 ft
50 ft
100 ft
150 ft
40
APPENDIX B: OPTIONAL RAIN HOODS
A weather-protected version of the MM-10 subwoofer is available with rain hood kits that safeguard the subwoofer’s electronics from the elements in fixed, outdoor installations. The rain hood is available in both horizontal (PN 40.174.015.01) and vertical (PN 40.174.015.02) versions. The rain hood is made of a durable, high-impact polycarbonate that is also transparent, allowing the subwoofer's connections and LEDs to be visible.
2.50
[63.5mm]
INSTALLING THE HORIZONTAL RAIN HOOD
To install the MM-10 horizontal rain hood:
1. Orient the MM-10 horizontally with its user panel to the left.
1. Attach any required cables to the subwoofer.
2. If the rain hood’s gasket material is not attached, firmly attach it to the rain hood’s inner edges. Do not attach the gasket directly to the user panel.
3. Attach the rain hood by slipping it under the flange at the top of the loudspeaker, placing it flush against the user panel. Align the rain hood’s holes with those in the panel.
6.25
[158.8mm]
4.15
[105.4mm]
5.51
[140.0mm]
6.22
[157.9mm]
4.68
[118.8mm]
MM-10 Horizontal Rain Hood Dimensions
5.13
[130 mm]
6.25
[159 mm]
2.50
[64 mm]
5.57
[141 mm]
MM-10 Vertical Rain Hood Dimensions
6.06
[154 mm]
4.22
[107 mm]
4. Secure the rain hood to the user panel by inserting the lock pins in the two bottom holes. Insert the pins all the way so they lock.
INSTALLING THE VERTICAL RAIN HOOD
To install the MM-10 vertical rain hood:
1. Orient the MM-10 vertically with its user panel at the top.
2. Attach any required cables to the subwoofer.
3. If the rain hood’s gasket material is not attached, firmly attach it to the rain hood’s inner edges. Do not attach the gasket directly to the user panel.
41
APPENDIX B: OPTIONAL RAIN HOODS
4. Attach the rain hood by slipping it under the flange on the right side of the subwoofer, placing it flush against the user panel. Align the rain hood’s holes with those in the panel.
5. Secure the rain hood to the user panel by inserting the lock pins in the two left holes. Insert the pins all the way so they lock.
Tilt for Vertically-Oriented, Weather-Protected
MM-10s
When installing vertically-oriented, weather-protected
MM-10s, the units must be mounted at a 0-degree, or downward, tilt. This ensures that water will not accumulate in the front of loudspeaker.
42
APPENDIX C: PHOENIX AND EN3 CABLE ASSEMBLY
ASSEMBLING EN3-TO-EN3 LOUDSPEAKER CABLES
When connecting MM-10XP loudspeakers equipped with EN3 connectors to the MPS-488HPe power supply, you need an
EN3 5-pin female to EN3 5-pin male cable. The following procedure documents how to assemble this cable. If you are starting with an EN3-to-pigtail cable (included with the MM-10XP), you can skip step 5 in this procedure.
NOTE: Cable mount connectors cannot connect to other cable mount connectors. Cable mount connectors can only connect to panel mount connectors (like those on the MM-10XP and MPS-488HPe) or inline connectors. To extend cables with EN3 connectors on both ends you can use an EN3 5-pin female-to-male cable coupler.
Assembled EN3-to-EN3 Cable
To assemble an EN3-to-EN3 loudspeaker cable:
1. Disassemble the EN3 5-pin male connector and feed one end of the cable through the boot, cable clamp housing, and coupling ring.
Boot Coupling ring
Cable clamp housing
Disassembled EN3 5-Pin Male Cable Mount Connector
Cord connector
43
APPENDIX C: PHOENIX AND EN3 CABLE ASSEMBLY
2. If the cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and white wires .275”.
1”
0.275”
3. Solder the five exposed conductors to the five pins on the EN3 cord connector using the following wiring scheme.
Dimple identifies Pin #1
Pin #5, White, audio (+)
Pin #1, Black,
48 V DC (–)
Pin #5, White, audio (+)
Pin #4, Blue, audio (–)
Pin #2, Red,
48 V DC (+)
Pin #4, Blue, audio (–)
REAR
FRONT Pin #3, Unshielded, audio shield
Pin Destinations for EN3 5-Pin Male Cable Mount Connector
4. Reassemble the EN3 5-pin male connector:
■ Align the coupling ring’s side notches with the cord connector’s side notches and slide the couple ring onto the cord connector.
■ Carefully insert the end of the cable clamp housing into the cord connector until it locks into place. Snap the cable clamps in the cable clamp housing into their compartments.
■ Slide the boot forward so it covers the cable clamp housing completely.
44
MM-10 OPERATING INSTRUCTIONS
5. Repeat the previous steps to attach the EN3 5-pin female connector to the other end of the cable.
Dimple identifies Pin #1
Pin #5, White, audio (+)
Pin #1, Black,
48 V DC (–)
Pin #2, Red,
48 V DC (+)
Pin #4, Blue, audio (–)
FRONT Pin #3, Unshielded, audio shield
Pin Destinations for EN3 5-Pin Female Cable Mount Connector
REAR
Pin #5, White, audio (+)
Pin #4, Blue, audio (–)
ASSEMBLING EN3-TO-PHOENIX LOUDSPEAKER CABLES
When connecting MM-10XP loudspeakers equipped with EN3 connectors to the MPS-488HPp power supply, you need an
EN3 5-pin female to Phoenix 5-pin female cable. The following procedure documents how to assemble this cable. If you are starting with an EN3-to-pigtail cable (included with the MM-10XP), you can skip steps 4–7 in this procedure.
Assembled EN3-to-Phoenix Cable
To assemble an EN3-to-Phoenix cable:
1. If cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and white wires .275”.
1”
0.275”
45
APPENDIX C: PHOENIX AND EN3 CABLE ASSEMBLY
2. Insert the five exposed conductors into the five cable holes in the Phoenix connector using the following wiring scheme.
Pin #1 Black
Pin #2 Red
48 V DC (–)
48 V DC (+)
Pin #3 Unshielded Audio shield
Pin #4 Blue Audio (–)
Pin #5 White Audio (+)
Side (cable attached)
Phoenix 5-Pin Female Cable Mount Connector
3. Secure the conductors by tightening the five screws in the Phoenix conductor.
Connector side up
Tighten screws
4. Disassemble the EN3 5-pin female connector and feed one end of the cable through the boot, cable clamp housing, and coupling ring.
Boot Coupling ring
Cable clamp housing
Disassembled EN3 5-Pin Female Cable Mount Connector
Cord connector
5. If the EN3 end of the cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and white wires .275”.
46
MM-10 OPERATING INSTRUCTIONS
6. Solder the five exposed conductors to the five pins on the EN3 cord connector using the following wiring scheme.
Dimple identifies Pin #1
Pin #5, White, audio (+)
Pin #1, Black,
48 V DC (–)
Pin #5, White, audio (+)
Pin #4, Blue, audio (–)
Pin #2, Red,
48 V DC (+)
Pin #4, Blue, audio (–)
REAR
FRONT Pin #3, Unshielded, audio shield
Pin Destinations for EN3 5-Pin Female Cable Mount Connector
7. Reassemble the EN3 5-pin female connector:
■ Align the coupling ring’s side notches with the cord connector’s side notches and slide the couple ring onto the cord connector.
■ Carefully insert the end of the cable clamp housing into the cord connector until it locks into place. Snap the cable clamps in the cable clamp housing into their compartments.
■ Slide the boot forward so it covers the cable clamp housing completely.
ASSEMBLING PHOENIX-TO-PHOENIX LOUDSPEAKER CABLES
When connecting MM-10XP loudspeakers equipped with Phoenix connectors to the MPS-488HPp power supply, you need a Phoenix 5-pin female to Phoenix 5-pin female cable. The following procedure documents how to assemble this cable.
Assembled Phoenix-to-Phoenix Cable
To assemble a Phoenix-to-Phoenix cable:
1. If the cable has not yet been stripped, strip one end of the cable. Strip the outer shielding by 1” and then strip the black, red, blue, and white wires by .275”.
1”
0.275”
47
APPENDIX C: PHOENIX AND EN3 CABLE ASSEMBLY
2. Insert the five exposed conductors, from one end of the cable, into the five cable holes in one of the Phoenix connectors.
Use the following wiring scheme.
Pin #1 Black
Pin #2 Red
Pin #3 Shield
Pin #4 Blue
Pin #5 White
48 V DC (–)
48 V DC (+)
Audio shield
Audio (–)
Audio (+)
Side (cable attached)
Phoenix 5-Pin Female Cable Mount Connector
3. Secure the conductors by tightening the five screws in the Phoenix connector.
Connector side up
Tighten screws
4. Repeat the previous steps and attach the other end of the cable to the other Phoenix connector.
5. Verify the wiring polarity is correct for both connectors.
48
APPENDIX D: SPECIFICATIONS
MM-10 SPECIFICATIONS (ALL MODELS)
MM-10 Specifications (All Models)
ACOUSTICAL
Operating Frequency Range
Frequency Response
Phase Response
Maximum Peak SPL
33 Hz – 228 Hz
Note: Recommended maximum operating frequency range. Response depends on loading conditions and room acoustics.
35 Hz – 208 Hz ±4 dB
Note: Free-field, measured with 1/3rd octave resolution at 4 meters.
38 Hz – 138 Hz ±45°
123 dB
Note: Measured with music referred to 1 meter.
< 100 dB
360°
Dynamic Range
Coverage
TRANSDUCER
Type
Nominal Impedance
Voice Coil Size
Power Handling
10" cone driver with neodymium magnet
4
2”
400 W (AES)
Note: Measured under AES standards: transducer driven continuously for two hours with a bandlimited noise signal having a 6 dB peak-average ratio.
AUDIO INPUT
Type
Maximum Common Mode Range
Input Impedance
DC Blocking
CMRR
RF Filter
Nominal Input Sensitivity
Input Level
Differential, electronically balanced
±5 V DC
10 k
electronically balanced
4.8 Hz high pass
< –60 dB, typically < –72 dB (200 Hz – 3 kHz)
Common mode: 616 kHz
Differential mode: 616 kHz
–2.0 dBV (0.8 V rms, 1.1 V peak) continuous is typically the onset of limiting for noise and music
Audio source must be capable of producing +16 dBV (6.3 V rms, 9.0 V peak) into 600
to produce the maximum peak SPL over the operating bandwidth of the loudspeaker
AMPLIFIER
Amplifier Type
Output Power
Total Output
THD, IM TIM
Load Capacity
Cooling
Class D
220 W
Note: Wattage rating based on the maximum unclipped burst sine-wave rms voltage the amplifier will produce into the nominal load impedance: 30 V rms (42 V peak) into 4 ohms.
440 W peak
< .02%
4
Convection
49
APPENDIX D: SPECIFICATIONS
MM-10 Specifications (All Models)
ENVIRONMENTAL
Operating Temperature
Non Operating Temperature
Humidity
Operating Altitude
Non operating Altitude
Shock
Vibration
0° C to +45° C
<–40° C or >+75° C
To 95% at 35° C
To 4600 m (15,000 ft)
To 95% at 35° C
30 g 11 msec half-sine on each of 6 sides
10 Hz – 55 Hz (0.010 m peak-to-peak excursion)
MM-10XP Specifications
MM-10XP Specifications
MM-10XP REAR PANEL
Audio/Power Connector
Wiring
Phoenix 5-pin male or EN3 5-pin male
(two pins for DC power, three pins for balanced audio)
Pin 1: DC power negative (–)
Pin 2: DC power positive (+)
Pin 3: Balanced audio shield, chassis/earth
Pin 4: Balanced audio (–)
Pin 5: Balanced audio (+)
Reverses audio input polarity between pins 4 and 5
Displays loudspeaker status
Input Polarity Switch
LED
MM-10XP DC POWER
Safety Agency Rated
Operating Range
MM-10XP Current Draw
Idle Current
Maximum Long-Term
Continuous Current
Burst Current
Ultimate Short-Term
Peak Current
Inrush Current
PHYSICAL
Enclosure
Finish
Protective Grille
Mounting
Dimensions
Weight
48 V DC
Note: Tolerates voltage drops up to 30% with long cable runs.
Note: At 48 V DC.
0.16 A rms
0.90 A rms
2.5 A rms
3.0 A peak
< 7.0 A peak
Multi-ply hardwood
Black textured
Hex-stamped steel with black mesh screen
Top and side nut plates available with 3/8”or M10 threads. MUB-MM10 U-bracket mounts the subwoofer on walls and ceilings at adjustable angles.
19” W x 11” H x 12” D
(483 mm x 279 mm x 305 mm)
26.7 lbs (12.11 kg)
50
MM-10 OPERATING INSTRUCTIONS
MM-10AC Specifications
MM-10AC Specifications
MM-10AC REAR PANEL
Audio Connectors
Input Polarity Switch
AC Power Connectors
LED
MM-10AC AC POWER
XLR female input with XLR male loop output
Pin 1: Chassis/earth through 220 k
, 1000 pF, 15 V clamp network to provide virtual ground lift at audio frequencies
Pin 2: Signal +
Pin 3: Signal –
Case: Earth ground and chassis
Reverses audio input polarity between pins 2 and 3
PowerCon with loop output
Displays loudspeaker status
Voltage Selection
Safety Agency Rated Operating
Range
Turn On/Turn Off Points
Automatic
100–240 V AC; 50/60 Hz
90–264 V AC; 50/60 Hz
Note: No automatic turn-off voltages. Voltages above 265 V AC are fuse protected but may cause permanent damage to the power supply. Voltages below 90 V AC may result in intermittent operation.
MM-10AC Current Draw
Idle Current
Maximum Long-Term Continuous
Current
0.13 A rms (115 V AC); 0.13 A rms (230 V AC); 0.14 A rms (100 V AC)
0.40 A rms (115 V AC); 0.25 A rms (230 V AC); 0.46 A rms (100 V AC)
Burst Current
Ultimate Short-Term Peak Current
0.9 A rms (115 V AC); 0.4 A rms (230 V AC); 1.1 A rms (100 V AC)
2.0 A peak (115 V AC); 1.4 A peak (230 V AC); 2.3 A peak (100 V AC)
Inrush Current 4.0 A peak (115 V AC); 2.4 A peak (230 V AC); 4.0 A peak (100 V AC)
Note: Current draw values for a single MM-10AC. AC Loop Output not used.
PHYSICAL
Enclosure
Finish
Protective Grille
Mounting
Dimensions
Weight
Multi-ply hardwood
Black textured
Hex-stamped steel with black mesh screen
Top and side nut plates available with 3/8”or M10 threads. MUB-MM10 U-bracket mounts the subwoofer on walls and ceilings at adjustable angles.
19” W x 11” H x 12” D
(483 mm x 279 mm x 305 mm)
28.2 lbs (12.79 kg)
51
APPENDIX D: SPECIFICATIONS
MM-10ACX Specifications
MM-10ACX Specifications
MM-10ACX REAR PANEL
Subwoofer Audio Connector
Input Polarity Switch
Input Select Switch
XLR female input
Pin 1: Chassis/earth through 220 k
, 1000 pF, 15 V clamp network to provide virtual ground lift at audio frequencies
Pin 2: Signal +
Pin 3: Signal –
Case: Earth ground and chassis
Reverses audio input polarity between pins 2 and 3 (subwoofer only)
Determines whether the subwoofer receives its source signal from the subwoofer input or satellite inputs (summed)
Note: Input Select switch only included on the MM-10ACX model.
Gain Knob Adjusts the subwoofer signal from completely attenuated to +10 dB
Note: Gain knob only included on the MM-10ACX model.
PowerCon with loop output AC Power Connectors
Satellite Loudspeaker Connectors Two XLR female inputs
Two Phoenix 5-pin male or EN3 5-pin female outputs
(two pins for DC power, there pins for balanced audio)
Note: Satellite loudspeaker connectors only included on the MM-10ACX model.
Displays loudspeaker status LED
MM-10ACX AC POWER
Voltage Selection
Safety Agency Rated Operating
Range
Automatic
100–240 V AC; 50/60 Hz
Turn On/Turn Off Points 90–264 V AC; 50/60 Hz
Note: No automatic turn-off voltages. Voltages above 265 V AC are fuse protected but may cause permanent damage to the power supply. Voltages below 90 V AC may result in intermittent operation.
MM-10ACX Current Draw (Subwoofer Only)
Idle Current 0.21 A rms (115 V AC); 0.20 A rms (230 V AC); 0.23 A rms (100 V AC)
Maximum Long-Term Continuous
Current
0.48 A rms (115 V AC); 0.31 A rms (230 V AC); 0.55 A rms (100 V AC)
Burst Current
Ultimate Short-Term Peak Current
1.1 A rms (115 V AC); 0.6 A rms (230 V AC); 1.3 A rms (100 V AC)
2.2 A peak (115 V AC); 1.6 A peak (230 V AC); 2.5 A peak (100 V AC)
Inrush Current 6.6 A peak (115 V AC); 3.7 A peak (230 V AC); 7.2 A peak (100 V AC)
Note: Current draw values for one MM-10ACX with no satellite loudspeakers connected. AC Loop Output not used.
MM-10ACX Current Draw (with Two MM-4XPs)
Idle Current 0.32 A rms (115 V AC); 0.26 A rms (230 V AC); 0.36 A rms (100 V AC)
Maximum Long-Term Continuous
Current
0.90 A rms (115 V AC); 0.51 A rms (230 V AC); 1.02 A rms (100 V AC)
Burst Current
Ultimate Short-Term Peak Current
Inrush Current
2.5 A rms (115 V AC); 1.3 A rms (230 V AC); 3.0 A rms (100 V AC)
4.5 A peak (115 V AC); 2.8 A peak (230 V AC); 5.0 A peak (100 V AC)
7.6 A peak (115 V AC); 4.4 A peak (230 V AC); 8.4 A peak (100 V AC)
52
MM-10 OPERATING INSTRUCTIONS
MM-10ACX Specifications
Note: Current draw values for one MM-10ACX with two MM-4XP satellite loudspeakers connected. AC Loop Output not used.
PHYSICAL
Enclosure
Finish
Protective Grille
Multi-ply hardwood
Black textured
Mounting
Hex-stamped steel with black mesh screen
Top and side nut plates available with 3/8”or M10 threads. MUB-MM10 U-bracket mounts the subwoofer on walls and ceilings at adjustable angles.
Dimensions
Weight
19” W x 11” H x 12” D
(483 mm x 279 mm x 305 mm)
30.8 lbs (13.97 kg)
MM-10 COMPLIANCE
T
U
V
Rheinlan d o f
N
C o rth
A meri ca
,
In c
US
MM-10 DIMENSIONS
12.00
[305 mm]
6.50
[165 mm]
5.00
[127 mm]
19.00
[483 mm]
11.00
[279 mm]
MM-10 Dimensions
53
APPENDIX D: SPECIFICATIONS
54
Meyer Sound Laboratories Inc.
2832 San Pablo Avenue
Berkeley, CA 94702 www.meyersound.com
T: +1 510 486.1166
F: +1 510 486.8356
© 2010
Meyer Sound. All rights reserved.
MM-10 Operating Instructions, PN 05.199.005.01 B
advertisement
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Related manuals
advertisement