AM1 Automixer Manual
22268
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MIC MIX
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USB
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MICS
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LOCATE POWER
AM1
AUTOMIXER
    
SIG
Important Safety Instructions
AM1 Manual
AM1 & AM2 Data Sheet
Sound System Interconnection
Warranty
Declaration of Conformity
MIC INPUTS
2
3
CONTENTS (in order of appearance)
1
AM1
AUTOMIXER    
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A
grounding-type plug has two blades and a third grounding prong. The wide blade or 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 and plug from being walked on or pinched particularly at plugs, convenience receptacles, and the point where it exits from
the apparatus.
11. Only use attachments and accessories specified by Rane.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply
cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
15. The plug on the power cord is the AC mains disconnect device and must remain readily operable. To completely disconnect this apparatus from
the AC mains, disconnect the power supply cord plug from the AC receptacle.
16. This apparatus shall be connected to a mains socket outlet with a protective earthing connection.
17. When permanently connected, an all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the
electrical installation of the building.
18. If rackmounting, provide adequate ventilation. Equipment may be located above or below this apparatus, but some equipment (like large power
amplifiers) may cause an unacceptable amount of hum or may generate too much heat and degrade the performance of this apparatus.
19. This apparatus may be installed in an industry standard equipment rack. Use screws through all mounting holes to provide the best support.
WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Apparatus shall not be exposed to dripping
or splashing and no objects filled with liquids, such as vases, shall be placed on the apparatus.
WARNING
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOCS ELECTRIQUE - NE PAS OUVRIR
To reduce the risk of electrical shock, do not open the unit. No user
serviceable parts inside. Refer servicing to qualified service personnel.
The symbols shown below are internationally accepted symbols
that warn of potential hazards with electrical products.
This symbol indicates that a dangerous voltage
constituting a risk of electric shock is present
within this unit.
This symbol indicates that there are important
operating and maintenance instructions in the
literature accompanying this unit.
WARNING: This product may contain chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm.
NOTE: 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 the dealer or an experienced radio/TV technician for help.
CAUTION: Changes or modifications not expressly approved by Rane Corporation could void the user's authority to operate the equipment.
CAN ICES-3 (B)/NMB-3(B)
Shielded CAT5e or better cables are required in order to comply with the FCC Rules part 15 limits for a Class B digital device.
INSTRUCTIONS DE SÉCURITÉ
1. Lisez ces instructions.
2. Gardez précieusement ces instructions.
3. Respectez les avertissements.
4. Suivez toutes les instructions.
5. Ne pas utiliser près d’une source d’eau.
6. Ne nettoyer qu’avec un chiffon doux.
7. N’obstruer aucune évacuation d’air. Effectuez l’installation en suivant les instructions du fabricant.
8. Ne pas disposer près d’une source de chaleur, c-à-d tout appareil produisant de la chaleur sans exception.
9. Ne pas modifier le cordon d’alimentation. Un cordon polarisé possède 2 lames, l’une plus large que l’autre. Un cordon avec tresse de masse possède
2 lames plus une 3è pour la terre. La lame large ou la tresse de masse assurent votre sécurité. Si le cordon fourni ne correspond pas à votre prise,
contactez votre électricien.
10. Faites en sorte que le cordon ne soit pas piétiné, ni au niveau du fil, ni au niveau de ses broches, ni au niveau des connecteurs de vos appareils.
11. N’utilisez que des accessoires recommandés par Rane.
12. N’utilisez que les éléments de transport, stands, pieds ou tables spécifiés par le fabricant ou vendu avec l’appareil. Quand vous utlisez une valise de
transport, prenez soin de vous déplacer avec cet équipement avec prudence afin d’éviter tout risque de blessure.
13. Débranchez cet appareil pendant un orage ou si vous ne l’utilisez pas pendant un certain temps.
14. Adressez-vous à du personnel qualifié pour tout service après vente. Celui-ci est nécessaire dans n’importe quel cas où l’appareil est abimé : si le
cordon ou les fiches sont endommagés, si du liquide a été renversé ou si des objets sont tombés sur l’appareil, si celui-ci a été exposé à la pluie ou
l’humidité, s’il ne fonctionne pas correctement ou est tombé.
15. La fiche du cordon d’alimentation sert à brancher le courant alternatif AC et doit absolument rester accessible. Pour déconnecter totalement
l’appareil du secteur, débranchez le câble d’alimentation de la prise secteur.
16. Cet appareil doit être branché à une prise terre avec protection.
17. Quand il est branché de manière permanente, un disjoncteur tripolaire normalisé doit être incorporé dans l’installation électrique de l’immeuble.
18. En cas de montage en rack, laissez un espace suffisant pour la ventilation. Vous pouvez disposer d’autres appareils au-dessus ou en-dessous de celuici, mais certains (tels que de gros amplificateurs) peuvent provoquer un buzz ou générer trop de chaleur au risque d’endommager votre appareil et
dégrader ses performances.
19. Cet appareil peut-être installé dans une baie standard ou un chassis normalisé pour un montage en rack. Visser chaque trou de chaque oreille de
rack pour une meilleure fixation et sécurité.
ATTENTION: afin d’éviter tout risque de feu ou de choc électrique, gardez cet appareil éloigné de toute source d’humidité et d’éclaboussures quelles
qu’elles soient. L’appareil doit également être éloigné de tout objet possédant du liquide (boisson en bouteilles, vases,…).
ATTENTION
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOCS ELECTRIQUE - NE PAS OUVRIR
Afin d’éviter tout risque de choc électrique, ne pas ouvrir l’appareil.
Aucune pièce ne peut être changée par l’utilisateur. Contactez un
SAV qualifié pour toute intervention.
Les symboles ci-dessous sont reconnus internationalement
comme prévenant tout risque électrique.
Ce symbole indique que cette unité utilise un
voltage élevé constituant un risque de choc
électrique.
Ce symbole indique la présence d’instructions
d’utilisation et de maintenance importantes dans le
document fourni.
REMARQUE: Cet équipement a été testé et approuvé conforme aux limites pour un appareil numérique de classe B, conformément au chapitre 15
des règles de la FCC. Ces limites sont établis pour fournir une protection raisonnable contre tout risque d’interférences et peuvent provoquer une
énergie de radiofréquence s'il n'est pas installé et utilisé conformément aux instructions, peut également provoquer des interférences aux niveaux
des équipements de communication. Cependant, il n'existe aucune garantie que de telles interférences ne se produiront pas dans une installation
particulière. Si cet équipement provoque des interférences en réception radio ou télévision, ceci peut être detecté en mettant l'équipement sous/hors
tension, l'utilisateur est encouragé à essayer de corriger cette interférence par une ou plusieurs des mesures suivantes:
• Réorienter ou déplacer l'antenne de réception.
• Augmenter la distance entre l'équipement et le récepteur.
• Connecter l'équipement à une sortie sur un circuit différent de celui sur lequel le récepteur est branché.
• Consulter un revendeur ou un technicien radio / TV expérimenté.
ATTENTION: Les changements ou modifications non expressément approuvés par Rane Corporation peuvent annuler l'autorité de l'utilisateur à
manipuler cet équipement et rendre ainsi nulles toutes les conditions de garantie.
CAN ICES-3 (B)/NMB-3(B)
Un câble blindé de CAT5 ou de qualité équivalente voir meilleure sont nécessaires afin de se conformer à
la réglementation de la FCC chapitre 15 sur les limites concernant les appareils numériques de classe B.
Cartons et papier à recycler.
OPERATORS MANUAL
AM1
AUTOMATIC MIXER
MIC INPUTS
2
3
1
MIX
4
MIC MIX
AUX 1
PHONES
AUX 2
USB
OUTPUT
SOURCE
AUX 1
MICS
SIG
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OL
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
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OL
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
AUX 2
AM1
USB
OUTPUT
AUTOMIXER
LEVEL
LOCATE POWER
QUICK START
If you’re setting up the AM1 automixer, but your life depends
on getting back to Twitter® feeds and Facebook® posts, then this
Quick Start is for you. It’s intended to get your audio working
quickly in slightly more than 140 characters.
Plug microphones into the Mic Inputs using standard XLR
mic cables. Condenser mics need the MIC +48V switch position. Use the MIC +0V middle position for dynamic mics. Use
the WIRELSS MIC position when a wireless receiver output is
connected.
When using the USB Charge-Only port, connect charging MP3 player audio into AUX 1 or AUX 2. Other line-level
sources (e.g., DVD/CD) may also use AUX 1 or AUX 2. Use the
USB Charge-Only port for keeping the iPod’s battery charged
during playback.
Connect the Main Output XLR to your amplifier or powered
loudspeaker and select the LINE switch position. If the Main
Output feeds a microphone input, select the MIC position.
Connect the computer’s USB port to the USB Audio jack.
Once the Windows® or Apple® operating system recognizes the
AM1 as a stereo I/O device, the rear green USB light illuminates.
Start with all the front panel gray knobs turned all the way
down – fully counterclockwise. One at a time for each mic, talk
very loudly with a microphone at an appropriate distance for the
application and adjust the corresponding front panel LEVEL
control so only the loudest speech just barely flickers the red
overload (OL) indicators. Once the input gains are set, the AM1
automatically controls the mic mix to avoid feedback. (You won’t
need to ride these controls.)
Sources with output volume controls (e.g., iPods) need to be
turned up most of the way to get the hottest signal, but without
making the AM1 overload lights flash.
WEAR PARTS: This product contains no wear parts.
Play audio from your computer’s audio software application
and select the Rane AM1 as the playback and/or recording device (See USB Audio later in this Manual). If the software offers
playback volume, turn it up all the way.
Turn on the amplifier/loudspeaker and turn it up about
half way. Also turn the AM1 OUTPUT gray knob up until the
volume is appropriate for your application. Use the four gray Mix
knobs to adjust the relative volume of the sources.
If the system feeds back (that horrible squeal), something is
turned up too much. First try moving the mics farther from the
loudspeaker and/or pointing the mics and loudspeakers away
from each other. If this does not reduce feedback, don’t reach for
the black Mic Input knobs, instead turn down the gray Mic Mix
knob. While turning down the output or amplifier may help,
this also turns down the iPod, CD or USB Audio, only hiding
the feedback problem.
If your system uses the AM1’s rear panel RAD Port, connect
a shielded CAT 5e cable (or better) from the AM1 to either the
wall plate RJ-45, or to a Rane HAL, EXP or Mongoose RAD
port. See the Rane RADX product for useful RJ-45 wall plates.
When cascading one or more AM2 automixers into the
AM1, be certain each Cascade In connection feeds a Cascade
Out. In a cascaded chain, the AM1 must be the last device
before the analog audio connection to the amplifiers, powered
loudspeaker, or the digital RAD connection to a Rane HAL,
EXP or Mongoose RAD port. Only one AM1 can be included in
a cascaded system of AM1s and AM2s. And only the AM2 can
be cascaded into Halogen’s Gain-Sharing Auto Mixer and Room
Combine Processor DSP blocks.
Now you can tweet that your AM1 is working fine.
Manual-1
FRONT PANEL DESCRIPTION
MIC INPUTS
2
3
1
MIX
4
MIC MIX
AUX 1
PHONES
AUX 2
USB
OUTPUT
SOURCE
AUX 1
MICS
SIG
LEVEL
OL
1
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
2
SIG
LEVEL
OL
SIG
3
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
AUX 2
OL
AM1
USB
OUTPUT
AUTOMIXER
LEVEL
LOCATE POWER
4 5 6 7 8 90
1 MIC INPUT LEVEL controls adjust the mic input gain. The green Signal indicators inform of audio presence. Overload
indicators warn of excessive signal levels.
2 MIC MIX LEVEL control adjusts the volume of all mixed microhones, including all upstream microphones when cascading
additional mics from a Rane AM2 (sold separately). Signal and Overload indicators inform and warn.
3 AUX 1 & AUX 2 MIX LEVEL controls alter the mix volume of the Aux 1 and Aux 2 inputs, respectively. Corresponding Signal
and Overload indicators flank each.
4 USB MIX LEVEL control adjusts the mix volume of the USB audio received from a computer connected to the rear panel USB
Audio jack. Signal and Overload colors are reminiscent of holiday lights.
5 Main OUTPUT LEVEL control adjusts the level of the mix exiting the XLR output and the RAD Port output. The Record
Output level is not affected by this control.
6 PHONES SOURCE cue switch selects which audio is heard in the headphone outputs: the mix of all Mics, the Aux 1 input, the
Aux 2 input, the USB audio input, or the Main Output. This allows listening in headphones to any single input before turning
each up in the mix using the MIX controls, or listening to the main mix before turning it up in the PA for the world to hear.
7 PHONES LEVEL control adjusts the volume of both the 3.5 mm and ¼" headphone jacks.
8 PHONES include both 3.5 mm and ¼" headphone jacks for either size headphone plug.
9 LOCATE indicator helps system installers identify a specific AM1 Automixer when using Rane’s Mongoose Tracker or Halogen
software.
0 POWER indicator lights whenever adequate power is applied to the unit.
Manual-2
REAR PANEL DESCRIPTION
1
MAIN OUTPUT
AUDIO TX
AUDIO RX
USB
COMM
POWER
POWER
RECORD
AUX
INPUTS
2
RAD PORT
1
4
3
MIC INPUTS
2
1
MIC +48V
MIC +0V
WIRELESS MIC
LOCATE
100-240V
50/60 Hz 13 WATTS
USB
AUDIO
MIC +48V
MIC +0V
WIRELESS MIC
CASCADE
FAULT
w
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
5 VDC @ 500 mA
USB
CHARGE
ONLY
AM1
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
9 q
MIC +48V
MIC +0V
WIRELESS MIC
4
2
CLASS 2 WIRING
35 6 7 8 0
e
1 AC Power IEC input accepts electrons to power up the AM1. Though it is first in this list, it’s best to connect it last.
2 FAULT indicator lights when something goes awry.
LOCATE indicator flashes when toggled from the Mongoose Tracker or Halogen software. When using multiple AM1 devices in
a Rane Mongoose or HAL system, this uniquely identifies a specific AM1.
USB indicator lights when a Windows or Apple operating system recognizes the AM1 as a stereo I/O sound card.
POWER indicator glows when flowing electrons pass in and out of the AC Power IEC input.
3 USB AUDIO connector allows simultaneous 16-bit, 48 kHz playback and recording via a computer. The AM1 registers as a
standard sound card with either Windows or Apple operating systems.
4 CASCADE IN port permits adding up to 56 more microphones to the AM1’s 4 mic inputs using up to 7 Rane AM2 automixers,
sold separately. Use shielded Ethernet CAT 5e cable connected from the AM2’s Cascade Out.
5 RAD PORT connects to either a Rane HAL or Mongoose Remote Audio Device port to transport the single-channel, Main Mix
of the AM1 to Rane’s expandable DSP or to a CobraNet network, respectively.
6 CASCADE IN & RAD PORT status indicators prove that proper cable termination and device configuring has occurred when all
four indicators illuminate. If any of these are off or flashing, a configuration or wiring error is the culprit.
7 MAIN OUTPUT XLR connector contains the main mix of all mics, Aux 1, Aux 2 and USB Audio input signals. The front panel Output Level control adjusts the level exiting this jack.
MIC/LINE Output switch changes this Main XLR Output to mic-level, for feeding the output mix to a mic input device; or line-level for feeding line-level input devices.
8 RECORD Output RCA jacks contain the same audio mix as the Main Output. The signal is not affected by the Output Level
control.
9 USB CHARGE-ONLY port powers and charges many USB devices such as iPods®.
0 AUX INPUT 2 stereo 3.5 mm jack is internally monoed immediately and useful for connecting MP3 players of all kinds.
q AUX INPUT 1 dual RCA jacks are internally monoed immediately and enjoy being fed audio from CD, DVD, 8-Track tape
players, reel-to-reel machines, docking stations or iPhone®, iPod® or iPad® headphone jacks.
w MIC INPUTS 1 thru 4 accept dynamic or condenser microphones, or the output of a wireless microphone receiver. These inputs
are optimized for speech and have a fixed 80 Hz low-cut and 7 kHz high-cut filter. Both filters are 2nd-order Butterworth filters.
e 3-position switches support:
MIC +48V phantom power Mic position for condenser mics.
MIC +0V Mic position for dynamic mics.
WIRELESS MIC position intended for wireless mic receiver outputs.
Manual-3
HAL Multiprocessor
DIGITAL REMOTES
4
7
6
3
2
2
2
1
1
AUDIO TX
RELAY OUT
C NC NO C NC NO
1
+
LOGIC IN
COMM
8
–
+
G 4 3 2 1 G
+
8
–
7
–
+
6
–
+
MIC / LINE INPUTS
5
4
+
7
–
+
6
–
–
+
–
LINE OUTPUTS
5
4
+
–
+
–
3
+
–
+
3
+
–
+
2
–
2
–
+
+
1
–
1
–
POWER
EXPANSION BUS
LAN
LINK
ETHERNET
100-240 V
50/60 Hz 55 WATTS
DIGITAL REMOTES
8
LINK
SHIELDED CAT5e OR BETTER
7
6
5
4
REMOTE AUDIO DEVICES & DRs
3
2
1
4
3
24 VDC @ 50 mA
CLASS 2 WIRING
2
1
24 VDC @ 100 mA
AM1 Automixer
POWER
POWER
RECORD
AUX
INPUTS
1
4
2
RAD PORT
3
MIC INPUTS
2
1
MIC +48V
MIC +0V
WIRELESS MIC
COMM
MIC +48V
MIC +0V
WIRELESS MIC
MAIN OUTPUT
AUDIO TX
AUDIO RX
MIC +48V
MIC +0V
WIRELESS MIC
USB
AUDIO
MIC +48V
MIC +0V
WIRELESS MIC
CASCADE
FAULT
LOCATE
5 VDC @ 500 mA
USB
CHARGE
ONLY
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
AM1
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
CLASS 2 WIRING
AM2 Automixer
POWER
100-240V
50/60 Hz 13 WATTS
6
5
MIC INPUTS
4
3
RAD PORT
4
3
4
3
4
3
4
3
4
3
2
1
2
1
2
1
2
1
2
1
2
1
MIC +48V
MIC +0V
WIRELESS MIC
7
MIC +48V
MIC +0V
WIRELESS MIC
OUT
USB
DATA
USB
8
OUTPUT
CASCADE
FAULT
LOCATE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
IN
AM2
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
CLASS 2 WIRING
POWER
100-240V
50/60 Hz 13 WATTS
7
6
5
MIC INPUTS
MIC +48V
MIC +0V
WIRELESS MIC
OUT
USB
DATA
USB
8
OUTPUT
CASCADE
FAULT
LOCATE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
IN
AM2
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
RAD PORT
MIC +48V
MIC +0V
WIRELESS MIC
AM2 Automixer
CLASS 2 WIRING
USB
POWER
100-240V
50/60 Hz 13 WATTS
7
6
5
MIC INPUTS
MIC +48V
MIC +0V
WIRELESS MIC
IN
OUT
USB
DATA
8
OUTPUT
CASCADE
FAULT
LOCATE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
MIC
LINE
AM2
RANE CORPORATION
RAD PORT
MIC +48V
MIC +0V
WIRELESS MIC
AM2 Automixer
PATENT NO. 8,542,849
CLASS 2 WIRING
POWER
100-240V
50/60 Hz 13 WATTS
7
6
5
MIC INPUTS
MIC +48V
MIC +0V
WIRELESS MIC
USB
DATA
USB
8
OUTPUT
CASCADE
FAULT
LOCATE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
IN
AM2
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
RAD PORT
MIC +48V
MIC +0V
WIRELESS MIC
AM2 Automixer
OUT
USB AUDIO PORT
Connect a USB cable from this port to the computer’s USB port.
Once the operating system recognizes the AM1 as a stereo input
and output “sound card,” the rear panel USB indicator lights.
The AM1 can simultaneously playback and record via a computer using this USB audio port.
4
POWER
100-240V
50/60 Hz 13 WATTS
MAIN OUTPUT
The Main Output is a mono balanced XLR jack. Connect the
Main Output XLR using mic cable to your amplifier or powered
loudspeaker and select the LINE position on the adjacent switch.
If the Main Output feeds a microphone snake or mic input,
select the MIC switch position.
5
COMM
USB
RECORD OUTPUT
The RCA line-level outputs are unbalanced. Both RCA jacks
contain the same mono mix of the Mic, Aux, and USB Audio
inputs.
3
AUDIO RX
8
RANE CORPORATION
USB CHARGE-ONLY PORT
The USB Charge-Only port supplies 5 volts DC at up to 500
mA to charge iPods® and many other USB-powered devices. The
3.5 mm Aux 2 input is optimized to accept audio from devices
plugged in to the USB Charge-Only port.
REMOTE AUDIO DEVICES
HAL1X
MIC +48V
MIC +0V
WIRELESS MIC
AUX INPUTS
The two Aux inputs accept line-level audio for connection to
CD/DVD players and portable MP3 players utilizing the USB
Charge-Only port or its external charger.
While the physical ¼" and 3.5 mm jacks are both stereo, the
internal audio on both Aux inputs is immediately monoed since
the AM1 Mix is mono.
CASCADE IN
Connect a shielded Ethernet patch cable from the CASCADE
IN port to a Rane AM2’s CASCADE OUT port to add more
mics to the mic mix of an AM1. All four CASCADE IN Status
Indicators illuminate when the two devices recognize each other.
Connect up to seven Rane AM2 Automixers to add up to 56
more mics. Be certain to connect CASCADE OUT to CASCADE IN throughout – otherwise, nirvana won’t be achieved.
Note: Only one AM1 Automixer is permitted in a cascaded
system. When cascading mixers, the AM1 must be the device
that feeds the Mongoose or HAL. In other words, the AM1
RAD Port wires to the Mongoose or HAL, and up to seven
AM2 mixers chain together into the AM1’s CASCADE IN. See
the illustration below.
MIC +48V
MIC +0V
WIRELESS MIC
MIC INPUTS
The four mic jacks are balanced XLR inputs. Unbalanced mics
or wiring can also be used with their inherent lower quality and
higher potential for hum and noise. Standard microphone cable
with a two-conductor twisted pair plus a shield is best. Rane
follows the AES recommended practice of pin 2 positive (hot),
pin 3 negative, and pin 1 to shield. If your microphone is unbalanced (only two conductors), see the Sound System Interconnection RaneNote elsewhere in this manual or on Rane’s website for
the proper cable to use. Or better yet, get a balanced mic.
For condenser microphones which require phantom power,
use the MIC +48V switch position. Dynamic mics use the center, MIC +0V position. When connecting a wireless microphone
receiver, use the WIRELESS MIC position.
MIC +48V
MIC +0V
WIRELESS MIC
Connect the AC power cord last to avoid loudspeakers hurting
your sensitive ears.
RAD PORT
If your audio system delivers the AM1’s Main Output audio
mix using Rane’s digital audio transport technology exiting the
RAD Port, connect a shielded Ethernet patch cable to the RAD
Port. When the Rane Mongoose or HAL at the other end of
this connection recognizes the AM1’s RAD Port, audio nirvana
is achieved and all four adjacent RAD Port Status indicators
illuminate.
MIC +48V
MIC +0V
WIRELESS MIC
CONNECTION
CLASS 2 WIRING
6
5
MIC INPUTS
MIC +48V
MIC +0V
WIRELESS MIC
USB
POWER
100-240V
50/60 Hz 13 WATTS
7
MIC +48V
MIC +0V
WIRELESS MIC
OUT
USB
DATA
8
OUTPUT
CASCADE
FAULT
LOCATE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
IN
AM2
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
RAD PORT
MIC +48V
MIC +0V
WIRELESS MIC
AM2 Automixer
CLASS 2 WIRING
100-240V
50/60 Hz 13 WATTS
POWER
RAD PORT
7
6
5
MIC INPUTS
MIC +48V
MIC +0V
WIRELESS MIC
USB
DATA
MIC +48V
MIC +0V
WIRELESS MIC
USB
8
OUTPUT
CASCADE
FAULT
LOCATE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
IN
AM2
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
OUT
Manual-4
CLASS 2 WIRING
MIC +48V
MIC +0V
WIRELESS MIC
AM2 Automixer (up to seven)
OPERATION
MIC INPUTS
2
3
1
MIX
4
MIC MIX
AUX 1
PHONES
AUX 2
USB
OUTPUT
SOURCE
AUX 1
MICS
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
SIG
MIC INPUTS
The rear panel three-position switch sets the appropriate gain for
condenser, dynamic and wireless microphones as well as selecting phantom power for condenser microphones. The Mic Inputs
are automatically mixed using a gain-sharing algorithm. Set
the inputs using the black knobs so they do not (or rarely) clip.
Then, sit back and relax. If you’ve already set up the inputs and
someone starts talking louder/closer than you expected, feel free
to turn them down a little.
The green Signal indicators should easily light for soft talkers even at relatively low Level settings. The Overload indicator
should light only occasionally for only the loudest talkers.
The gray Mic Mix knob adjusts the level of the automatic
mix of all Mic Inputs. Use it to change the mix of all the Mics
relative to the Aux 1, Aux 2 and USB Audio Line Inputs. Even
when multiple Rane AM2 Automixers are cascaded into an AM1
providing additional microphones, the Mic Mix knob on the
AM1 still adjusts the overall mix of all microphones – up to 60
mics when using seven AM2s. The Overload indicator adjacent
to the Mic Mix knob indicates that the mix of all mics is getting
too loud for the internal circuitry. It can light occasionally, but
only during the loudest talking.
Since these Mic Inputs and their underlying gain-sharing automix algorithm are designed and optimized for speech signals,
do not use these Inputs with non-speech audio signals such as
musical instruments or CD/DVD.
AUX INPUTS
The 3.5 mm Aux 2 input jack is optimized for use with devices
connected to the adjacent USB Charge-Only port. For other
audio sources , use the Aux 1 RCA jacks. Since the AM1 mix is
mono, audio at these two stereo inputs is monoed upon entering
the AM1. Adjust the front panel Aux Level controls for Aux 1
and Aux 2 to set the relative mix of these sources. The Overload
indicators light when the incoming audio is getting too loud.
Only the very loudest audio sources should occasionally light the
Overload indicator.
If you’re using an iPod® or other aux/line source that allows
output volume adjustments, turn the volume up as far as possible
without lighting the Overload indicator too often.
LEVEL
OL
SIG
LEVEL
OL
SIG
LEVEL
OL
AUX 2
AM1
USB
OUTPUT
AUTOMIXER
LEVEL
LOCATE POWER
MIXING
The Mic Inputs are automatically mixed. Use the four gray Mix
knobs to adjust the relative volume of the four inputs: Mic Mix,
Aux 1, Aux 2 and USB Audio from the PC. The red overload
indicators should light only when the loudest source sounds are
running at full-tilt boogie.
OUTPUTS
All the AM1 audio outputs, digital and analog, contain a mono
mix of the automatically mixed Mics and manually mixed Line
Inputs from the four gray Mix knobs.
RECORD OUTPUT
The level or volume of the Record Output is not altered by the
AM1’s front panel Output level control. This permits consistent
recording levels on your favorite recording device, while adjusting the volume in the room / PA system.
MAIN OUTPUT
The front panel Output Level control adjusts the level of this
output.
HEADPHONE AND CUEING
Plug in headphones and adjust the Phones Level knob to a comfortable volume. All headphone audio is mono – just like all the
other AM1 outputs.
The Source knob allows cueing each mix source independently. This allows verification that a source is working properly
before bringing it into the mix.
With the Source set to Output, the entire mix is heard. Use
the four gray Mix knobs to adjust the relative volume of each
source. Select Mic Mix to hear the automatic mix of all microphones in the system. Select Aux 1, Aux 2 or USB to hear each
of these inputs individually.
Use only one of the headphone jacks at a time.
Manual-5
100-240V
50/60 Hz 13 WATTS
AUDIO TX
AUDIO RX
USB
COMM
POWER
POWER
RAD PORT
CASCADE IN PORT
The Cascade Input allows more mics to be added to the gainsharing mic mix algorithm of the AM1’s four Mic Inputs. When
a shielded Ethernet patch cable fed from an AM2 is connected
here, all cascaded AM2 microphones are automatically added to
the automatic Mic Mix of the AM1. (US Patent Pending.)
Cascade audio is 24-bit, 48 kHz, fixed-point for the curious
audio nerd.
To add more microphones to your system, use a Ethernet
patch cable to connect an AM2 CASCADE OUT port to the
AM1 CASCADE IN port. Doing so allows all 12 mixed microphones (eight AM2 + four AM1) to be heard at the AM1’s Main,
Record, USB Audio and RAD Port Outputs.
When all four Cascade Status indicators light, this means
the cable is wired properly. If any of the Status indicators are
flashing, the cable is not wired properly or damaged. In this case,
perhaps an Ethernet crossover cable was accidentally connected,
or the cable crimp has an error.
We recommend using shielded twisted-pair for the best EMI
performance.
CASCADE IN Status indicators are defined below:
AUDIO TX LED – lights when the AM1’s audio is successfully
transmitted to, and received by, the AM2. If this is off, check
the cable.
AUDIO RX LED – lights when the connected AM2 successfully
sends audio which also proves this twist in the cable is correct.
COMM LED – lights green when the AM2’s Cascade Out is
properly communicating with the AM1 and proves that the
twisted pair for Comm in the cable is good. If this indicator is
off, the cable is not a happy camper.
POWER LED – is always on when the AM1 is powered. If the
AM1 is powered and this is off, make sure the power twisted
pair in the connected cable is not shorted.
Manual-6
AUX
INPUTS
2
1
4
3
MIC INPUTS
2
1
MIC +48V
MIC +0V
WIRELESS MIC
USB
AUDIO
RECORD
MIC +48V
MIC +0V
WIRELESS MIC
FAULT
LOCATE
MAIN OUTPUT
MIC +48V
MIC +0V
WIRELESS MIC
CASCADE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
5 VDC @ 500 mA
USB
CHARGE
ONLY
AM1
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
CLASS 2 WIRING
RAD PORT
The RAD Port contains a Rane-specific digital audio transport
protocol allowing audio delivery to either a Rane HAL, EXP or
Mongoose RAD port (each sold separately). The audio exiting
the RAD Port contains the main mix and is attenuated by the
AM1’s front panel Output Level control. This port can only be
used to connect to a Rane Mongoose or HAL.
For inquisitive technophiles, RAD Port audio is 24-bit,
48 kHz, fixed-point.
RAD PORT Status indicators are defined below:
AUDIO TX LED – lights green when communications with the
Mongoose or HAL has been established and is receiving the
AM1’s Tx audio. If this indicator is off, either the cable is bad,
or there is a communications error between the Mongoose or
HAL and AM1 RAD Port (see COMM LED below).
AUDIO RX LED – lights green when the RAD Port successfully
receives audio from the Mongoose or HAL. If this indicator is
off, you may have a bad cable, or the Mongoose or HAL at the
other end of the cable is not powered or connected.
COMM LED – lights green when communication is established
between the Mongoose or HAL and the AM1. This indicator
turns off if the RAD Port cannot communcate with the
Mongoose or HAL for some reason – most likely due to a
faulty cable.
POWER LED – lights green when the RAD Port is receiving 24
volt power from the Mongoose or HAL. This also indicates
that the twisted pair for power within the cable is wired and
crimped properly. If the Power LED is off and the other end
of the cable is plugged into a powered Mongoose or HAL,
there is a problem with the cable.
USB AUDIO I/O
Since the AM1 appears as a standard Windows or Mac stereo
playback and record device, you can simultaneously record the
AM1 Main Mix and playback audio via the USB. This makes
many popular audio software programs instantly compatible
with the AM1. Once the computer’s operating system finishes
registering the AM1 via USB, the rear panel USB indicator
lights. The AM1 always registers as a 16-bit, 48 kHz device.
Most audio programs work after setting the AM1 as a default
device, but a few programs may need their preferences manually
set to play or record at 16-bit, 48 kHz.
Play audio from your computer’s audio software application and select the Rane AM1 as the playback and/or recording
device. If your audio software offers a playback volume control,
turn it up most or all of the way, but without flashing the front
panel USB input Overload indicator too much. The front panel
USB Mix Level knob adjusts the mix volume of the incoming
USB audio.
Windows Vista:
Classic View
Start -> Settings -> Control Panel -> Sound -> Playback (tab) and Record (tab)
Control Panel Home
Start -> Control Panel -> Hardware and Sound -> Sound -> Playback (tab) and
Record (tab)
WINDOWS OPERATION
When Windows detects the AM1 it automatically sets it as the
default Recording and Playback device. With Windows XP® and
Vista®, any audio applications currently running will continue to
use the previously selected default device. Restart the application
to make it use the AM1 for recording or playback. Windows 7®
and 8® automatically switch a running application to the newly
connected AM1. To avoid surprises, we recommend turning the
USB Level down while connecting.
Remember that Windows likes to play different bleeps and
bloops when updates install, devices are plugged in and unplugged, or other operating system events happen. If you do
not want these sounds played into your mix, turn off Windows
system sounds. This can be found in:
Start -> Control Panel -> Sound -> Sounds (tab) -> Sound Scheme -> No Sounds.
Finding the audio properties and devices in Windows varies
slightly with each version.
Windows XP:
Classic View
Start -> Control Panel -> Sounds and Audio Devices -> Audio (tab)
Category View
Start -> Control Panel -> Sounds, Speech, and Audio Devices -> Sounds and Audio
Devices -> Audio (tab)
Manual-7
Windows 7 and 8:
Small/Large Icon View
Start -> Control Panel -> Sound -> Playback (tab) and Record (tab)
Category View
Start -> Control Panel -> Hardware and Sound -> Sound -> Playback (tab) and
Record (tab)
MACINTOSH OPERATION
When OSX® detects the AM1, it adds it to the list of audio
input and output devices, but does not automatically set it as
the default device. Some Macintosh® applications allow you to
select the device you want to use. Other applications only use
the device specified as the OSX default. We recommend that you
set the default audio input and output device to the AM1 before
starting the application you want to use.
Configure the default audio device in OSX by navigating to:
System Preferences -> Sound -> Output (tab) and Input (tab).
Tip: to quickly access these screens, right-click on the loudspeaker icon at the lower right corner of your desktop (next to the
clock). Choose “Playback Devices” or “Recording Devices.”
CobraNet is a trademark of Cirrus Logic Inc.
Windows XP, Vista and 7 is either a registered trademark or a trademark of Microsoft Corporation in the United States and/or other countries.
Apple, Mac, Macintosh, iPod, iPad, iPhone and iTunes are trademarks of Apple Computer, Inc., registered in the US and/or other countries.
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000 TEL 425-355-6000 FAX 425-347-7757 WEB rane.com
Manual-8
112067
AM1 & AM2
DATA SHEET
AM1 Features
AUTOMIXERS
AM2 Features
INPUTS:
• Gain-Sharing Automatic Mic Mixing:
• 4 XLR Inputs with Level controls & Sig/OL indicators.
•Select Mic, Mic with 48V phantom, or Line-level.
• Manually Mix:
• Overall Mic Mix.
• Two Aux Inputs: dual RCA & 3.5 mm, independently monoed.
• USB Audio Input (16-bit, 48 kHz).
INPUTS:
• Gain-Sharing Automatic Mic Mixing:
•8 XLR Inputs with Level controls & Sig/OL indicators.
•Select Mic, Mic with 48V phantom, or Line level.
OUTPUTS (all mono):
• XLR Main with Mic/Line switch, Level control & Sig/OL.
• Dual RCA Record.
• Headphone ¼” and 3.5 mm Outputs with Level control:
• Source select cues Mics, Aux 1, Aux 2, USB Input or Output.
• USB Audio Output (16-bit, 48 kHz).
• USB Charge Port for iPod® or other USB-powered devices.
• Rane RAD and Cascade IN RJ-45 Ports:
• Cascade In Port connects up to seven Rane AM2 Automixers.
• RAD Port sends Output to Rane HAL or Mongoose Systems.
OUTPUTS (all mono):
• XLR Main with Mic/Line switch, Level control & Sig/OL.
• Rane RAD and Cascade IN RJ-45 Ports:
• Cascade In Port connects up to seven Rane AM2 Automixers.
• RAD Port may send Output to Mongoose (CobraNet).
• RAD Port may send Output to HAL (DSP/control). It is possible
to cascade the AM2 mix into Halogen's Gain-Sharing Auto Mixer
or Room Combine Processor DSP, so that all mics connected to
HAL may gain-share (does not work with the AM1).
Data Sheet - 1
AM1 & AM2
AUTOMIXERS
AM1 and AM2 Common Features
The Rane AM1 and AM2 may be each be used on their own as a
standalone mixer, or add more gain-shared mics using up to seven
AM2 Automixers.
Each of the XLR Mic Inputs offers front panel input Level
controls feeding a gain-sharing automatic mixer. The AM1 has
four Mic Inputs, the AM2 has eight. Rear panel, 3-position
switches for each Mic Input support dynamic mics (no phantom
power), condenser mics (48 V), or wireless receiver outputs (+12
dBV max). A front panel Mic Mix Level control adjusts the volume of all automixed mics.
The Mic Inputs are optimized for automixing speech. They
have a fixed 80 Hz to 7 kHz bandpass filter (2nd-order Butterworth) to provide the best voice-only automatic mixing using a
gain-sharing algorithm.
Signal and Overload indicators monitor every Input Level
control and the Output Mix Level. Indicators flank each corresponding Level control.
The XLR Main Output can be set to Mic- or Line-level to feed
a mic snake or a +20 dBu max balanced input. The front panel
Output Level control affects the XLR Output and the RAD Port
output.
AM2 mixers may be cascaded, but only one AM1 may be
used, and it must be the final unit in a chain of no more than
eight AMs. Simply connect Cascade OUT ports to Cascade IN
ports and the final Output level on the last AM controls the main
mono output mix.
Use the RAD Port to transport the main output mix digitally
via shielded CAT 5e to either a Rane HAL’s RAD Port for further
signal processing and control, or to a Mongoose for potential
routing to a CobraNet network.
Both the RAD and the Cascade IN port have status indicators
to aid setup and troubleshooting. Rear panel Fault, Locate, USB
and Power indicators inform head-scratchers of device errors, the
AM’s physical location, positive USB audio device OS registration
and AC power status. Duplicate Locate and Power indicators are
on the front and rear.
Universal IEC power on the rear supports 100 to 240 VAC
and 50/60 Hz.
Data Sheet - 2
AM1 Unique Features
The Rane AM1 is part gain-sharing automatic mic mixer, part
manual line mixer, part USB audio I/O device, and simultaneously a Rane RAD. Use it as a standalone mic/line mixer with
up to four mics, or add more gain-shared mics using up to seven
AM2 Automixers for up to 60 gain-shared mics.
Three manually-mixed audio inputs provide a simple user
interface and installation. The Aux 1 Input dual RCA and Aux 2
3.5 mm jacks are independently mono’ed, each with a front panel
Level control. A dedicated USB Charge port adjacent to Aux 2
provides power to USB devices such as iPods® or other USB-powered devices. The separate orange USB Audio Input also offers a
front panel Level control for the 16-bit, 48 kHz digital audio that
is mono’ed immediately upon entry.
The AM1 appears in Windows and Apple OS X computers
as a standard USB Audio Device, immediately compatible with
dozens of audio recording and playback audio applications. The
AM1 registers with the OS as a 16-bit 48 kHz device for both
incoming and outgoing audio. The USB Audio port doubles as a
firmware update port if future updates become available.
The front panel Output Level control affects the XLR Output
and the RAD Port output. The analog RECORD RCA Outputs
and the digital USB Audio output are both mono, pre-Output
Level, containing the same mix as the Main Output.
A front panel pre-Output Selector permits headphone cueing
so users can verify input and output operation before bringing
new sources into the live Output mix. Both ¼" & 3.5 mm headphone jacks with a Level control are provided.
AM2 Unique Features
The Rane AM2 is both an 8 channel, gain-sharing automatic mic
mixer and simultaneously a Rane RAD. Use it as a standalone
mic-only mixer, or add more gain-shared mics using up to seven
additional AM2 Automixers for up to 64 gain-shared mics.
When an AM2 is used standalone, both the XLR Output
and the RAD Port output audio are affected by the front panel
Output Level control. When the AM2’s Cascade Output feeds a
downstream Rane AM1 or AM2, the front panel Output Level
control only affects the XLR Output.
The USB port is solely used as a firmware update port if future
updates are needed.
AM1 & AM2
AUTOMIXERS
Cascaded AM System Example
Record to or playback from
your computer on USB.
DVD
MP3/
Phone
Powered
Speaker
MENU
Wireless Receiver
AM1 Automixer
COMM
POWER
POWER
4
2
RAD PORT
3
MIC INPUTS
2
1
MIC +48V
MIC +0V
WIRELESS MIC
AUDIO RX
1
MIC +48V
MIC +0V
WIRELESS MIC
AUDIO TX
USB
AUX
INPUTS
MIC +48V
MIC +0V
WIRELESS MIC
LOCATE
USB
AUDIO
RECORD
5 VDC @ 500 mA
USB
CHARGE
ONLY
FAULT
100-240V
50/60 Hz 13 WATTS
MAIN OUTPUT
CASCADE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
AM1
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
CLASS 2 WIRING
To HAL (optional)
AM2 Automixer
5
MIC INPUTS
4
3
RAD PORT
4
3
2
1
2
1
MIC +48V
MIC +0V
WIRELESS MIC
6
MIC +48V
MIC +0V
WIRELESS MIC
USB
POWER
100-240V
50/60 Hz 13 WATTS
7
MIC +48V
MIC +0V
WIRELESS MIC
LOCATE
USB
DATA
OUT
FAULT
8
OUTPUT
CASCADE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
IN
AM2
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
CLASS 2 WIRING
Any combination of
wired or wireless mics
6
5
MIC INPUTS
4
3
2
1
MIC +48V
MIC +0V
WIRELESS MIC
7
MIC +48V
MIC +0V
WIRELESS MIC
IN
RAD PORT
MIC +48V
MIC +0V
WIRELESS MIC
USB
POWER
MIC
LINE
LOCATE
100-240V
50/60 Hz 13 WATTS
USB
DATA
8
OUTPUT
CASCADE
FAULT
USB cable
Ethernet (CAT 5e)
Audio cable
All additional mics will gain-share
OUT
AM2
MIC INPUTS
CLASS 2 WIRING
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
RANE CORPORATION
5
MIC +48V
MIC +0V
WIRELESS MIC
RAD PORT
Additional AM2s (up to seven)
PATENT NO. 8,542,849
6
MIC +48V
MIC +0V
WIRELESS MIC
USB
POWER
100-240V
50/60 Hz 13 WATTS
7
MIC +48V
MIC +0V
WIRELESS MIC
LOCATE
USB
DATA
OUT
FAULT
8
OUTPUT
CASCADE
MIC +48V
MIC +0V
WIRELESS MIC
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
IN
AM2
RANE CORPORATION
MIC
LINE
PATENT NO. 8,542,849
MIC +48V
MIC +0V
WIRELESS MIC
AM2 Automixer
CLASS 2 WIRING
Data Sheet - 3
AM1 & AM2
AUTOMIXERS
AM1 and AM2 as RADs with Mongoose or HAL
RADs
An entire family of RAD models interface with HAL or Mongoose Systems for digital conversion at the wall. Each converts
analog audio to and/or from 24-bit, 48 kHz digital audio.
Shielded CAT 5e (or better) cable and termination transport four
digital audio channels – two channels each direction – as well as
power, ground and a communications channel, with status indicators at each RAD, host unit, and host software. All RADs are
both “location-aware” and hot-swappable with 500-foot homerun
connections (66% farther than Ethernet). Most RADs mount in
standard US electrical boxes, and are available in white, ivory, or
black, with a matched Decora™ plate cover included.
Mongoose
Mongoose can replace the analog mic and line level portions of an
audio system with digitized audio over shielded CAT 5e cable (or
better). Mongoose can be used with or without CobraNet.
The Mongoose’s 32-by-32 digital audio matrix router receives
its first 16 audio channels from up to eight RADs via the eight
rear panel 8P8C (RJ-45) Remote Audio Device ports. The second
16 matrix input channels come from two eight-channel CobraNet
receive (Rx) Bundles via standard CobraNet Primary and Secondary/backup ports. The 32 matrix router outputs transmit 16
channels to eight RADs and 16 more channels to two CobraNet
transmit (Tx) Bundles. Mic inputs can be greatly increased by
connecting a RAD output from an AM1 and/or cascaded AM2s.
Find out more at rane.com/mongoose
HAL1
Meet HAL, an expert in room combining, paging and distributed
audio systems. This groundbreaking architecture is dimensions
beyond any other solution. HAL easily guides even novice users through what used to be complex tasks in just minutes. No
intricate matrix mixing or presets are required for room combining and paging. No virtual wiring required to distribute pages and
background music to multiple zones.
Data Sheet - 4
Seamlessly interface HAL to your facility with a broad variety
of peripheral devices including smart Digital Remotes, RADs,
portable and in-rack automixers, audio I/O and control logic expansion devices, wall sensors, ambient sensing mics, small remote
amplifiers, and an advanced Paging Station.
The HAL and Halogen software check the status, location,
CAT 5 wiring integrity, and that audio is flowing in all peripheral
devices, so you know your system is properly connected and ready
to go. HAL is more than just another DSP drag-and-drop system
— it has revolutionized system design and installation.
Three HAL Multiprocessors provide various audio I/O and
control options for both large and small installations, with
expandable systems capable of hundreds of mics (HAL1) or economical and adaptable 4 in x 8 out (HAL3).
Find out more at rane.com/hal
AM Automixers with HAL
An AM1 is a RAD, and an AM2 is a RAD, and the final output
of cascaded AM mixers is a RAD. Any of these allow the manually created mono mix to be sent digitally to a Rane HAL’s RAD
port via a shielded CAT 5e cable (or better). The Rane RADX
supports doing so portably – with the AM mixer(s) in a padded
rack or on a portable AV cart, for example. Once the AM mix is
in the HAL, additional signal processing such as EQ and compression can be added. Control of the mix’s level using Rane’s
DR1 or DR3 Digital Remotes is a breeze.
AM1 use with HAL
The AM1 does not have a Cascade Out Port, therefore it is not
possible to cascade the AM1 mix into Halogen’s Gain-Sharing
Auto Mixer or Room Combine Processor. You must use the AM2
mixer for cascading with these DSP blocks.
AM2 use with HAL
The AM2 mixer digitally cascades into Halogen’s Gain-Sharing
Auto Mixer or Room Combine Processor. This means the gainsharing algorithm automatically treats AM2 microphones and any
other microphone wired into these DSP blocks as being part of
the same gain-share. This provides superior gain before feedback
since all mics in the room, regardless of where and how they are
plugged in to the audio system, all work as one. This maintains
your feedback stability margin.
To maintain PAG & NAG like you never have before, connect
the AM2’s Cascade Out jack with a shielded CAT 5e (or better)
cable into any HAL’s RAD port. In Halogen software, in the Processing Workspace, drag the AM2 onto the Cascade In on either a
Gain-Sharing Auto Mixer or a Room Combine Processor.
You can cascade as many AM2 mixers into these two DSP
blocks as you have RAD Ports available. With a maximum of 36
total RAD ports in a HAL1 full with EXP1s, and a maximum of
8 AM2s cascaded externally, over two thousand possible channels
are possible!
AM1 & AM2
AUTOMIXERS
Features and Specifications
XLR Inputs
Phantom Power
Maximum Input
Input Impedance
Input Gain Range (Mic/Wireless)
Frequency Response
AM1 Aux Inputs 1 / 2
Maximum Input
Input Impedance
Gain Range
Frequency Response
Main Output
Maximum Output (Mic/Line)
Output Impedance (Mic/Line)
Output Gain Range
Dynamic Range (Line)
AM1 Frequency Response
AM2 Frequency Response
AM1 THD+N
AM2 THD+N
AM1 Record Output
Maximum Output
Output Impedance
Frequency Response
Dynamic Range
THD+N
AM1 Headphone Output
Maximum Output
Maximum Output Power
Output Gain Range
Frequency Response
Dynamic Range
THD+N
LED Meters
Signal
Overload
RAD / Cascade In / Out
Sample Rate and Resolution
AM1 USB Digital Audio
Sample Rate and Resolution
AM1 USB Charge Only Port
Output Voltage and Current
Unit
Universal Line Voltage
Conformity
U.S. Patent No. 8,542,849
Size
Weight
Shipping Size
Shipping Weight
Mono, Balanced, Mic/Line Selectable
+48V per IEC 60268-15, Selectable in Mic mode
-18 dBV / -6 dBV / +12 dBV (Dynamic / Condenser / Wireless)
2.01k, 1%
-80 to +34 dB / -80 to +26 dB
80 Hz to 7 kHz, 2nd-order Butterworth, +0/-3 dB, -20 dBFS, Extended vocal range
Dual Mono, Unbalanced, RCA / 3.5 mm TRS
+8 dBu
18.8 kΩ, 1%
-80 to +12 dB
20 Hz to 20 kHz, +0/-0.25 dB
Mono, Balanced, XLR
-20 / +20 dBu, 10 kΩ load
51 / 300 Ω, 1%
-80 to 0 dB
101 dB re +20 dBu, 20 kHz BW, A-weighted, 0 dB gain, 10 kΩ load
23 Hz to 20.5 kHz, +0/-3 dB
80 Hz to 7 kHz, +0/-3 dB, -20 dBFS
< 0.01%, 22 Hz to 20 kHz, A-weighted, +4 dBu, 0 dB gain, 10 kΩ load
< 0.02%, 100 Hz to 7 kHz, A-weighted, +4 dBu, 0 dB gain, 10 kΩ load
Dual Mono, Unbalanced, RCA
+12 dBu, 10 kΩ load
602 Ω, 1%
23 Hz to 20.5 kHz, +0/-3 dB
101 dB re +12 dBu, 20 kHz BW, A-weighted, 0 dB gain, 10 kΩ load
< 0.01%, 22 Hz to 20 kHz, A-weighted, +4 dBu, 0 dB gain, 10 kΩ load
Dual Mono, Unbalanced, ¼" and 3.5mm TRS
+9 dBu, 150 Ω load
30 mW into 150 Ω
-63 to +16 dB
23 Hz to 20.5 kHz, +0/-3 dB
101 dB re +9 dBu, 20Hz to 20 kHz BW, A-weighted, 0 dB Gain, 150 Ω load
< 0.06%, 22 Hz to 20 kHz, A-weighted, +4 dBu, 0 dB gain, 150 Ω load
Mono, peak detecting
-50 dBFS, Green LED, Peak-Reading
-0.5 dBFS, Red LED, Peak-Reading
8P8C (RJ-45) Connector. The AM2 has a Cascade Output, the AM1 does not.
48 kHz @ 24 bits, fixed-point
Dual Mono In/Out, USB-B connector
48 kHz @ 16 bits
USB-A Connector
+5 V max @ +500 mA max
All Steel Construction
100 to 240 VAC, 50/60 Hz, 13 W
CE, FCC, CCSAUS
1U 1.75"H x 19"W x 8.5"D (4.4 cm x 48.3 cm x 21.6 cm)
5 lb 4 oz (2.4 kg)
4.5" x 20.3" x 13.75" (11.5 cm x 52 cm x 35 cm)
9 lb (4.1 kg)
Note: 0 dBu = 0.775 Vrms
Data Sheet - 5
AM1 & AM2
AUTOMIXERS
Applications
Facilities and rental agencies are called upon to provide either
equipment, or equipment and operators, for meetings or conferences needing A/V support. The equipment providers must
ensure audio quality throughout the event to get repeat business.
However, the provided equipment may be operated by presenters who have no audio experience. If an operator is sent with the
equipment to set up and manage the system during the presentation, that operator may have little audio experience. Pitfalls
abound when interconnecting the system, and managing multimicrophone gain before feedback, mixing and volume. Handling
iPod and laptop playback and/or recording adds even more
complexity. Enter the Rane AM Automixer.
The AM1 makes it easy for an inexperienced operator to
quickly set up and manage audio for a multimedia presentation
involving up to four participants with microphones (wired or
wireless) and several program audio sources (e.g., DVD, Laptop,
MP3 player).
The AM2 easily handles an eight-person discussion panel or
board meeting. Additional AM2 mixers easily handle more mics
when needed, all gain-sharing, making operation simple.
The AM1 provides line audio sources, manually mixed since
there is no acoustic feedback potential. The AM1’s flexible line
input combination of RCA, 3.5 mm and separate USB Charge
and Audio I/O ports makes integration and cabling easy. And
since the USB Audio port can simultaneously playback audio and
record the AM1’s output, the same laptop can be a source and a
recording device to document AV meetings, presentations, trainings, and family karaoke nights for AV contractor employees.
The AM Automixer offers a professional integrated solution
that provides superior automatic gain before feedback while
eliminating operator error with simple controls. The microphone
gain-sharing algorithm automatically and appropriately attenuates
mics not in use while maintaining the 3 dB per doubling of mics
for different (noncoherent) talkers, and 6 dB per doubling for the
same (coherent) talker who is directly between two mics. Think of
the person wearing a live lavalier or headset, while approaching a
live podium mic...no problem!
Data Sheet - 6
•
•
•
•
AV Rental Systems Auditoriums
Conference Centers
Houses of Worship
•
•
•
•
Hotels
School AV Nerds
Panel Discussions
Podcasting
AM1 Architectural Specifications
The 1U audio device shall provide 4 rear-mounted XLR inputs
automatically mixed using a gain-sharing algorithm. Each input
shall permit independently selectable mic, mic with 48 volt
phantom power, or line input level intended for wireless receiver
output. Front panel mic input level controls for each input shall
indicate signal and overload and an overall mic mix level control
with signal and overload shall be provided.
Three manually-mixed inputs shall include dual RCA inputs,
a 3.5 mm stereo jack and dedicated USB charge port, and an
independent USB audio input; all three shall be monoed before
mixing. Front panel mix level controls for all three inputs shall
supply signal and overload indication.
Accommodation for two, post-level audio outputs shall be
provided. One on a single XLR male balanced analog output with
mic/line selector switch and the second via a Rane RAD Port on
RJ-45 providing 24-bit, 48 kHz PCM digital audio transport. A
mono, pre-output level mix shall be provided on dual-mono RCA
jacks and via a USB Audio port providing 16-bit, 48 kHz PCM
audio.
The USB Audio I/O port shall be recognized by Windows and
Apple OS X devices as a standard USB audio device permitting
simultaneous playback and recording to and from the device.
A cascade input RJ-45 shall permit gain-sharing mic mix expansion in groups of 8 channels from external automixer devices.
Up to 60 gain-shared mics shall be supported.
A front panel pre-level selector shall provide headphone cueing
with level control of either the mic mix, the RCA input, 3.5 mm
input, the USB audio input, or the main output mix. Headphone
outputs shall be provided on both ¼" and 3.5 mm jacks.
Universal 100 to 240 volt AC, 50 or 60 Hz operation shall be
provided via an IEC rear panel plug.
The unit shall be a Rane AM1.
AM1 & AM2
AUTOMIXERS
+48V PHANTOM / MIC / WIRELESS
INPUT 1
2
3
1
AM1 Block Diagram
SIG/OL
LEVEL
+48V PHANTOM / MIC / WIRELESS
INPUT 2
2
3
1
MICS
AUX 1
SIG/OL
AUX 2
USB
LEVEL
PHONES
SOURCE
PHONES 4.5 dB
LEVEL
TIP
RING
OUTPUT
+48V PHANTOM / MIC / WIRELESS
INPUT 3
2
3
1
SIG/OL
1/4”
HEADPHONES
AUTO
GAINSHARING
MIX
4.5 dB
TIP
RING
3.5mm
LEVEL
+48V PHANTOM / MIC / WIRELESS
INPUT 4
2
3
1
SIG/OL
SIG/OL
LEVEL
MIC/LINE
CASCADE INPUT
MIC
MIX
LEVEL
STATUS
MAIN OUTPUT
OUTPUT
LEVEL
2
1
3
RAD PORT CHANNEL 1 OUTPUT
AUX 1 INPUT
MONO
SIG/OL
LEVEL
MANUAL
MIX
SIG/OL
STATUS
AUX 2 INPUT
3.5mm
TIP
RING
USB INPUT
MONO
RCA RECORD OUTPUT
SIG/OL
LEVEL
SIG/OL
LEVEL
USB INPUT (MONO, 48 kHz, 16-BIT)
USB OUTPUT
USB OUTPUT (MONO, 48 kHz, 16-BIT)
Data Sheet - 7
AM1 & AM2
AUTOMIXERS
+48V PHANTOM / MIC / WIRELESS
INPUT 1
2
3
1
AM2 Block Diagram
SIG/OL
AUTO
GAINSHARING
MIX
LEVEL
+48V PHANTOM / MIC / WIRELESS
INPUT 2
2
3
1
OUTPUT
OUTPUT
LEVEL
2
1
3
SIG/OL
LEVEL
+48V PHANTOM / MIC / WIRELESS
INPUT 3
2
3
1
MIC/LINE
SIG/OL
RAD PORT / CASCADE OUTPUT
MIX OUT
CASCADE OUT
SIG/OL
STATUS
LEVEL
+48V PHANTOM / MIC / WIRELESS
INPUT 4
2
3
1
SIG/OL
LEVEL
+48V PHANTOM / MIC / WIRELESS
INPUT 5
2
3
1
SIG/OL
LEVEL
+48V PHANTOM / MIC / WIRELESS
INPUT 6
2
3
1
SIG/OL
LEVEL
+48V PHANTOM / MIC / WIRELESS
INPUT 7
2
3
1
SIG/OL
LEVEL
+48V PHANTOM / MIC / WIRELESS
INPUT 8
2
3
1
AM2 Architectural Specifications
The 1U audio device shall provide 8 rear-mounted XLR inputs
automatically mixed using a gain-sharing algorithm. Each input
shall permit selectable mic, mic with 48 volt phantom power,
or line input level intended for wireless receiver outputs. Front
panel mic input level controls for each input shall indicate signal
and overload and an overall output level control with signal and
overload shall be provided.
When used standalone without cascading addition mics, accommodation for two, post-level audio outputs shall be provided.
One on a single XLR male balanced analog output with mic/line
selector switch and the second via a Rane RAD Port on RJ-45
providing 24-bit, 48 kHz PCM digital audio transport to a Rane
Mongoose or HAL. When cascading additional gain-shared mics
downstream, the front panel output level control only affects the
XLR Output.
A USB data port shall be provided to support firmware updates
should they be needed.
A cascade input RJ-45 shall permit gain-sharing mic mix expansion in groups of 8 channels from external automixer devices.
Up to 64 gain-shared mics with a maximum of eight 1U devices
shall be supported. To input line audio sources or perform headphone cueing, a Rane AM1 is supported.
Universal 100 to 240 volt AC, 50 or 60 Hz operation shall be
provided on an IEC rear panel plug.
The unit shall be a Rane AM2.
SIG/OL
LEVEL
CASCADE INPUT
Data Sheet - 8
STATUS
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000
TEL 425-355-6000 FAX 425-347-7757 WEB rane.com
Specifications subject to change without notice. 9-2015
RaneNote
SOUND SYSTEM INTERCONNECTION
Sound System
Interconnection
• Cause & prevention of ground loops
• Interfacing balanced & unbalanced
• Proper pin connections and wiring
• Chassis ground vs. signal ground
• Ground lift switches
Introduction
This note, originally written in 1985, continues to be one
of our most useful references. It’s popularity stems from
the continual and perpetual difficulty of hooking up audio
equipment without suffering through all sorts of bizarre
noises, hums, buzzes, whistles, etc.— not to mention the
extreme financial, physical and psychological price. As technology progresses it is inevitable that electronic equipment
and its wiring should be subject to constant improvement.
Many things have improved in the audio industry since
1985, but unfortunately wiring isn’t one of them. However,
finally the Audio Engineering Society (AES) has issued a
standards document for interconnection of pro audio equipment. It is AES48, titled “AES48-2005: AES standard on
interconnections —Grounding and EMC practices — Shields
of connectors in audio equipment containing active circuitry.”
Rane’s policy is to accommodate rather than dictate.
However, this document contains suggestions for external
wiring changes that should ideally only be implemented by
trained technical personnel. Safety regulations require that
all original grounding means provided from the factory be
left intact for safe operation. No guarantee of responsibility
for incidental or consequential damages can be provided. (In
other words, don’t modify cables, or try your own version of
grounding unless you really understand exactly what type of
output and input you have to connect.)
Rane Technical Staff
RaneNote 110
© 1985, 1995, 2006, 2007, 2011, 2015 Rane Corporation
Interconnection-1
Ground Loops
Almost all cases of noise can be traced directly to ground
loops, grounding or lack thereof. It is important to understand the mechanism that causes grounding noise in order
to effectively eliminate it. Each component of a sound
system produces its own ground internally. This ground is
usually called the audio signal ground. Connecting devices
together with the interconnecting cables can tie the signal
grounds of the two units together in one place through
the conductors in the cable. Ground loops occur when the
grounds of the two units are also tied together in another
place: via the third wire in the line cord, by tying the metal
chassis together through the rack rails, etc. These situations
create a circuit through which current may flow in a closed
“loop” from one unit’s ground out to a second unit and back
to the first. It is not simply the presence of this current that
creates the hum—it is when this current flows through a
unit’s audio signal ground that creates the hum. In fact, even
without a ground loop, a little noise current always flows
through every interconnecting cable (i.e., it is impossible to
eliminate these currents entirely). The mere presence of this
ground loop current is no cause for alarm if your system
uses properly implemented and completely balanced interconnects, which are excellent at rejecting ground loop and
other noise currents. Balanced interconnect was developed
to be immune to these noise currents, which can never be
entirely eliminated. What makes a ground loop current annoying is when the audio signal is affected. Unfortunately,
many manufacturers of balanced audio equipment design
the internal grounding system improperly, thus creating balanced equipment that is not immune to the cabling’s noise
currents. This is one reason for the bad reputation sometimes given to balanced interconnect.
A second reason for balanced interconnect’s bad reputation comes from those who think connecting unbalanced
equipment into “superior” balanced equipment should
improve things. Sorry. Balanced interconnect is not compat-
ible with unbalanced. The small physical nature and short
cable runs of completely unbalanced systems (home audio)
also contain these ground loop noise currents. However, the
currents in unbalanced systems never get large enough to
affect the audio to the point where it is a nuisance. Mixing
balanced and unbalanced equipment, however, is an entirely
different story, since balanced and unbalanced interconnect
are truly not compatible. The rest of this note shows several
recommended implementations for all of these interconnection schemes.
The potential or voltage which pushes these noise currents through the circuit is developed between the independent grounds of the two or more units in the system. The
impedance of this circuit is low, and even though the voltage
is low, the current is high, thanks to Mr. Ohm, without
whose help we wouldn’t have these problems. It would take
a very high resolution ohm meter to measure the impedance
of the steel chassis or the rack rails. We’re talking thousandths of an ohm. So trying to measure this stuff won’t
necessarily help you. We just thought we’d warn you.
The Absolute Best Right Way To Do It
The method specified by AES48 is to use balanced lines and
tie the cable shield to the metal chassis (right where it enters
the chassis) at both ends of the cable.
A balanced line requires three separate conductors, two
of which are signal (+ and –) and one shield (see Figure 1a).
The shield serves to guard the sensitive audio lines from
interference. Only by using balanced line interconnects can
you guarantee (yes, guarantee) hum-free results. Always use
twisted pair cable. Chassis tying the shield at each end also
guarantees the best possible protection from RFI [radio frequency interference] and other noises [neon signs, lighting
dimmers].
Neil Muncy1, an electroacoustic consultant and seasoned
veteran of years of successful system design, chairs the AES
BALANCED OUTPUTS
+
–
BALANCED INPUTS
RED
BLACK
SHIELD
+
RED
BLACK
SHIELD
2-CONDUCTOR SHIELDED CABLE
–
G
G
MALE
2
3
1
T
R
S
CHASSIS
GROUND
Interconnection-2
FEMALE
RED
2
BLACK
C 3
SHIELD
1
RED
BLACK
SHIELD
2-CONDUCTOR SHIELDED CABLE
RED
BLACK
SHIELD
2-CONDUCTOR SHIELDED CABLE
RED
BLACK
SHIELD
Figure 1a. The right way to do it.
MALE
2
3
1
FEMALE
2
C 3
1
T
R
S
CHASSIS SIGNAL
GROUND GROUND
Standards Committee (SC-05-05) working on this subject.
He tirelessly tours the world giving seminars and dispensing information on how to successfully hook-up pro audio
equipment2. He makes the simple point that it is absurd that
you cannot go out and buy pro audio equipment from several different manufacturers, buy standard off-the-shelf cable
assemblies, come home, hook it all up and have it work hum
and noise free. Plug and play. Sadly, almost never is this the
case, despite the science and rules of noise-free interconnect
known and documented for over 60 years (see References for
complete information).
It all boils down to using balanced lines, only balanced
lines, and nothing but balanced lines. This is why they were
developed. Further, that you tie the shield to the chassis, at
the point it enters the chassis, and at both ends of the cable
(more on ‘both ends’ later).
Since standard XLR cables come with their shields tied to
pin 1 at each end (the shells are not tied, nor need be), this
means equipment using 3-pin, XLR-type connectors must
tie pin 1 to the chassis (usually called chassis ground) — not
the audio signal ground as is most common.
Not using signal ground is the most radical departure
from common pro-audio practice. Not that there is any argument about its validity. There isn’t. This is the right way
to do it. So why doesn’t audio equipment come wired this
way? Well, some does, and since 1993, more of it does. That’s
when Rane started manufacturing some of its products with
balanced inputs and outputs tying pin 1 to chassis. So why
doesn’t everyone do it this way? Because life is messy, some
things are hard to change, and there will always be equipment in use that was made before proper grounding practices were in effect.
Unbalanced equipment is another problem: it is everwhere, easily available and inexpensive. All those RCA and
¼" TS connectors found on consumer equipment; effectloops and insert-points on consoles; signal processing boxes;
semi-pro digital and analog tape recorders; computer cards;
mixing consoles; et cetera.
The next several pages give tips on how to successfully
address hooking up unbalanced equipment. Unbalanced
equipment when “blindly” connected with fully balanced
units starts a pattern of hum and undesirable operation,
requiring extra measures to correct the situation.
The Next Best Right Way To Do It
The quickest, quietest and most foolproof method to connect balanced and unbalanced is to transformer isolate all
unbalanced connections. See Figure 2.
Many manufacturers provide several tools for this task,
including Rane. Consult your audio dealer to explore the
options available.
The goal of these adaptors is to allow the use of standard
cables. With these transformer isolation boxes, modification
of cable assemblies is unnecessary. Virtually any two pieces
of audio equipment can be successfully interfaced without
risk of unwanted hum and noise.
Another way to create the necessary isolation is to use a
direct box. Originally named for its use to convert the high
impedance, high level output of an electric guitar to the low
impedance, low level input of a recording console, it allowed
the player to plug “directly” into the console. Now this term
is commonly used to describe any box used to convert unbalanced lines to balanced lines.
The Last Best Right Way To Do It
If transformer isolation is not an option, special cable
assemblies are a last resort. The key here is to prevent the
shield currents from flowing into a unit whose grounding
scheme creates ground loops (hum) in the audio path (i.e.,
most audio equipment).
It is true that connecting both ends of the shield is theoretically the best way to interconnect equipment –though
this assumes the interconnected equipment is internally
grounded properly. Since most equipment is not internally
grounded properly, connecting both ends of the shield is
not often practiced, since doing so usually creates noisy
interconnections.
A common solution to these noisy hum and buzz problems involves disconnecting one end of the shield, even
though one can not buy off-the-shelf cables with the shield
disconnected at one end. The best end to disconnect is the
receiving end. If one end of the shield is disconnected, the
noisy hum current stops flowing and away goes the hum
— but only at low frequencies. A ground-sending-end-only
shield connection minimizes the possibility of high frequency (radio) interference since it prevents the shield from
acting as an antenna to the next input. Many reduce this
potential RF interference by providing an RF path through
UNBALANCED
COMMON (WRONG) PRACTICE
(+)
CASE
RECOMMENDED PRACTICE
2
2
3
(–)
3
1
CHASSIS
GROUND
(+)
CASE
OPTIONAL
(–)
NOT CONNECTED
AT CHASSIS
(PLASTIC JACK)
TRANSFORMER
1/4”
TIP-SLEEVE
1
SIGNAL
GROUND
CHASSIS
GROUND
CHASSIS
GROUND
Figure 1b. Recommmended practice.
BALANCED
CASE LUG MAY
CONNECT TO
CHASSIS
(NOT REQUIRED)
2
3
1
EARTH GROUNDED
METAL ENCLOSURE
CHASSIS IS
GROUNDED TO PIN 1
Figure 2. Transformer Isolation
Interconnection-3
a small capacitor (0.1 or 0.01 microfarad ceramic disc) connected from the lifted end of the shield to the chassis. (This
is referred to as the “hybrid shield termination” where the
sending end is bonded to the chassis and the receiving end is
capacitively coupled. See Neutrik’s EMC-XLR for example.)
The fact that many modern day installers still follow this
one-end-only rule with consistent success indicates this
and other acceptable solutions to RF issues exist, though
the increasing use of digital and wireless technology greatly
increases the possibility of future RF problems.
If you’ve truly isolated your hum problem to a specific
unit, chances are, even though the documentation indicates
proper chassis grounded shields, the suspect unit is not internally grounded properly. Here is where special test cable
assemblies, shown in Figure 3, really come in handy. These
assemblies allow you to connect the shield to chassis ground
at the point of entry, or to pin 1, or to lift one end of the
shield. The task becomes more difficult when the unit you’ve
isolated has multiple inputs and outputs. On a suspect unit
with multiple cables, try various configurations on each connection to find out if special cable assemblies are needed at
more than one point.
See Figure 4 for suggested cable assemblies for your particular interconnection needs. Find the appropriate output
configuration (down the left side) and then match this with
the correct input configuration (across the top of the page.)
Then refer to the following pages for a recommended wiring
diagram.
Ground Lifts
Many units come equipped with ground lift switches. In
only a few cases can it be shown that a ground lift switch
improves ground related noise. (Has a ground lift switch
ever really worked for you?) In reality, the presence of a
ground lift switch greatly reduces a unit’s ability to be
“properly” grounded and therefore immune to ground loop
hums and buzzes. Ground lifts are simply another Band-Aid®
to try in case of grounding problems. It is true that an entire
system of properly grounded equipment, without ground
lift switches, is guaranteed (yes guaranteed) to be hum free.
The problem is most equipment is not (both internally and
externally, AC system wise) grounded properly.
Most units with ground lifts are shipped so the unit is
“grounded” — meaning the chassis is connected to audio
signal ground. (This should be the best and is the “safest”
position for a ground lift switch.) If after hooking up your
system it exhibits excessive hum or buzzing, there is an
incompatibility somewhere in the system’s grounding configuration. In addition to these special cable assemblies that
may help, here are some more things to try:
1. Try combinations of lifting grounds on units supplied
with lift switches (or links). It is wise to do this with the
power off!
2. If you have an entirely balanced system, verify all chassis
are tied to a good earth ground, for safety’s sake and hum
protection. Completely unbalanced systems never earth
ground anything (except cable TV, often a ground loop
source). If you have a mixed balanced and unbalanced
system, do yourself a favor and use isolation transformers or, if you can’t do that, try the special cable assemblies
described here and expect it to take many hours to get
things quiet. May the Force be with you.
3. Balanced units with outboard power supplies (wall warts
or “bumps” in the line cord) do not ground the chassis
through the line cord. Make sure such units are solidly
grounded by tying the chassis to an earth ground using a
star washer for a reliable contact. (Rane always provides
this chassis point as an external screw with a toothed
washer.) Any device with a 3-prong AC plug, such as an
amplifier, may serve as an earth ground point. Rack rails
may or may not serve this purpose depending on screw
locations and paint jobs.
FEMALE
2
C
3
1
RED
BLACK
SHIELD
2-CONDUCTOR SHIELDED CABLE
RED
BLACK
SHIELD
MALE
2
3
1
TEST
WIRE
Figure 3. Test cable
Interconnection-4
GROUND CLIP
Floating, Pseudo, and Quasi-Balancing
During inspection, you may run across a ¼" output called
floating unbalanced, sometimes also called psuedo-balanced
or quasi-balanced. In this configuration, the sleeve of the
output stage is not connected inside the unit and the ring
is connected (usually through a small resistor) to the audio
signal ground. This allows the tip and ring to “appear” as
an equal impedance, not-quite balanced output stage, even
though the output circuitry is unbalanced.
Floating unbalanced often works to drive either a balanced or unbalanced input, depending if a TS or TRS standard cable is plugged into it. When it hums, a special cable
is required. See drawings #11 and #12, and do not make
the cross-coupled modification of tying the ring and sleeve
together.
Winning the Wiring Wars
• Use balanced connections whenever possible, with the
shield bonded to the metal chassis at both ends.
• Transformer isolate all unbalanced connections from balanced connections.
• Use special cable assemblies when unbalanced lines cannot be transformer isolated.
• Any unbalanced cable must be kept under 10 feet
(3 m) in length. Lengths longer than this will amplify all
the nasty side effects of unbalanced circuitry's ground
loops.
Summary
If you are unable to do things correctly (i.e. use fully balanced wiring with shields tied to the chassis at both ends,
or transformer isolate all unbalanced signals from balanced
signals) then there is no guarantee that a hum-free interconnect can be achieved, nor is there a definite scheme that will
assure noise-free operation in all configurations.
References
1. Neil A. Muncy, “Noise Susceptibility in Analog and Digital Signal Processing Systems,” presented at the 97th AES
Convention of Audio Engineering Society in San Francisco, CA, Nov. 1994.
2. Grounding, Shielding, and Interconnections in Analog
& Digital Signal Processing Systems: Understanding the
Basics; Workshops designed and presented by Neil Muncy
and Cal Perkins, at the 97th AES Convention of Audio
Engineering Society in San Francisco, CA, Nov. 1994.
3. The entire June 1995 AES Journal, Vol. 43, No. 6, available
$6 members, $11 nonmembers from the Audio Engineering Society, 60 E. 42nd St., New York, NY, 10165-2520.
4. Phillip Giddings, Audio System Design and Installation
(SAMS, Indiana, 1990).
5. Ralph Morrison, Noise and Other Interfering Signals (Wiley, New York, 1992).
6. Henry W. Ott, Noise Reduction Techniques in Electronic
Systems, 2nd Edition (Wiley, New York, 1988).
7. Cal Perkins, “Measurement Techniques for Debugging
Electronic Systems and Their Instrumentation,” The Proceedings of the 11th International AES Conference: Audio
Test & Measurement, Portland, OR, May 1992, pp. 82-92
(Audio Engineering Society, New York, 1992).
8. Macatee, RaneNote: “Grounding and Shielding Audio
Devices,” Rane Corporation, 1994.
9. Philip Giddings, “Grounding and Shielding for Sound and
Video,” S&VC, Sept. 20th, 1995.
10. AES48-2005: AES standard on interconnections —
Grounding and EMC practices — Shields of connectors
in audio equipment containing active circuitry (Audio
Engineering Society, New York, 2005).
Band-Aid is a registered trademark of Johnson & Johnson
Interconnection-5
To Input
CABLE
CONNECTORS
MALE
BALANCED XLR
FEMALE BALANCED XLR
(NOT A TRANSFORMER,
NOR A CROSS-COUPLED
OUTPUT STAGE)
From Output
FEMALE BALANCED XLR
(EITHER A TRANSFORMER
OR A CROSS-COUPLED
OUTPUT STAGE)
¼” BALANCED TRS
(NOT A TRANSFORMER,
NOR A CROSS-COUPLED
OUTPUT STAGE)
¼” BALANCED TRS
(EITHER A TRANSFORMER
OR A CROSS-COUPLED
OUTPUT STAGE)
¼” FLOATING UNBALANCED
TRS (TIP-RING-SLEEVE)
(SLEEVE IN UNIT = NC)
¼” OR 3.5 mm
UNBALANCED
TS (TIP-SLEEVE)
UNBALANCED RCA
(TIP-SLEEVE)
BALANCED
EUROBLOCK
¼" BALANCED
TRS (TIP-RING-SLEEVE)
¼" OR 3.5mm
UNBALANCED
TS (TIP-SLEEVE)
UNBALANCED RCA
1
2
3
4
1
2
5
6
B
B
BALANCED
EUROBLOCK
+ to +
– to –
SHIELD NC
+ to +
– to –
SHIELD NC
+ to +
– to –
7
8
9
10
7
8
11
12
21
22
11
12
GROUND to GROUND
13
14
15
16
23
17
18
19
20
23
+ to +
– to –
+ to +
– to –
24
+ to +
– to –
A
SHIELD ONLY
TO XLR PIN 1
A
SHIELD ONLY
TO TRS SLEEVE
B
A
A
24
B
A
A
SHIELD ONLY
TO EUROBLOCK
+ to +
– to –
SHIELD NC
+ to +
– to –
GROUND to GROUND
Figure 4. Interconnect chart for locating correct cable assemblies on the following pages.
Note: (A) This configuration uses an “off-the-shelf” cable.
Note: (B) This configuration causes a 6 dB signal loss. Compensate by “turning the system up” 6 dB.
Interconnection-6
2-CONDUCTOR SHIELDED CABLE
2
FEMALE
1=SHIELD
RED
2
2=RED
BLACK
C 3
3=BLACK
SHIELD
1
2-CONDUCTOR SHIELDED CABLE
3
FEMALE
1=SHIELD
RED
2
2=RED
C 3
B 3=NC
SHIELD
1
1-CONDUCTOR SHIELDED CABLE
4
FEMALE
1=SHIELD
RED
2
2=RED
C 3
B 3=NC
SHIELD
1
1-CONDUCTOR SHIELDED CABLE
From Output
5
6
FEMALE
1=SHIELD
RED
2
2-CONDUCTOR SHIELDED CABLE
2=RED
BLACK
C 3
3=BLACK
SHIELD
1
CROSS-COUPLED OUTPUT ONLY: CONNECT PIN 1 TO PIN 3 AT THIS END
AND SET GROUND LIFT SWITCH TO ‘GROUNDED’ (IF PRESENT).
7
RED
BLACK
SHIELD
2-CONDUCTOR SHIELDED CABLE
8
T=RED
R=BLACK
S=SHIELD
RED
BLACK
SHIELD
2-CONDUCTOR SHIELDED CABLE
9B
T=RED
R=NC
S=SHIELD
T=RED
10B R=NC
S=SHIELD
T=RED
R=BLACK
S=SHIELD
RED
1-CONDUCTOR SHIELDED CABLE
SHIELD
RED
SHIELD
RED
BLACK
SHIELD
2
3
1
1=NC
2=RED
3=BLACK
T=RED
R=BLACK
S=NC
RED
T=RED
S=SHIELD
SHIELD
RED
T=RED
S=SHIELD
SHIELD
RED
BLACK
T=RED
S=BLACK
RED
BLACK
RED
BLACK
N/C
T=RED
S=BLACK
MALE
2
3
1
1=NC
2=RED
3=BLACK
RED
BLACK
N/C
T=RED
R=BLACK
S=NC
RED
T=RED
S=BLACK
SHIELD
RED
1-CONDUCTOR SHIELDED CABLE
2-CONDUCTOR SHIELDED CABLE
MALE
RED
BLACK
N/C
FEMALE
1=SHIELD
RED
2
2-CONDUCTOR SHIELDED CABLE
BLACK
2=RED
C 3
SHIELD
3=BLACK
1
CROSS-COUPLED OUTPUT ONLY: CONNECT PIN 1 TO PIN 3 AT THIS END
AND SET GROUND LIFT SWITCH TO ‘GROUNDED’ (IF PRESENT).
T=RED
R=BLACK
S=SHIELD
11
RED
BLACK
N/C
SHIELD
RED
BLACK
To Input
1
FEMALE
1=SHIELD
RED
2
2=RED
BLACK
C 3
3=BLACK
SHIELD
1
T=RED
S=SHIELD
T=RED
S=BLACK
CROSS-COUPLED OUTPUT ONLY: CONNECT RING TO SLEEVE
AT THIS END AND SET GROUND LIFT SWITCH TO ‘GROUNDED’ (IF PRESENT).
12
T=RED
R=BLACK
S=SHIELD
RED
RED
2-CONDUCTOR SHIELDED CABLE
BLACK
BLACK
SHIELD
CROSS-COUPLED OUTPUT ONLY: CONNECT RING TO SLEEVE
AT THIS END AND SET GROUND LIFT SWITCH TO ‘GROUNDED’ (IF PRESENT).
T=RED
S=BLACK
Interconnection-7
14
T=RED
S=BLACK
RED
BLACK
N/C
2-CONDUCTOR SHIELDED CABLE
15A
T=RED
S=SHIELD
16A
T=RED
S=SHIELD
17
From Output
T=RED
S=BLACK
2-CONDUCTOR SHIELDED CABLE
18
T=RED
S=BLACK
T=RED
S=BLACK
19A
T=RED
S=SHIELD
20A
T=RED
S=SHIELD
RED
SHIELD
RED
SHIELD
1-CONDUCTOR SHIELDED CABLE
2-CONDUCTOR SHIELDED CABLE
RED
BLACK
2-CONDUCTOR SHIELDED CABLE
1-CONDUCTOR SHIELDED CABLE
SHIELD
2
3
1
RED
T=RED
S=SHIELD
SHIELD
RED
T=RED
S=SHIELD
SHIELD
RED
BLACK
SHIELD
MALE
2
3
1
T=RED
R=BLACK
A S=SHIELD
RED
BLACK
SHIELD
2-CONDUCTOR SHIELDED CABLE
22A
T=RED
R=BLACK
S=SHIELD
RED
BLACK
SHIELD
2-CONDUCTOR SHIELDED CABLE
RED
T=RED
S=SHIELD
RED
23
(ANY UNBALANCED CONNECTOR)
RED
BLACK
T=RED
S=BLACK
2-CONDUCTOR SHIELDED CABLE
T=RED
S=SHIELD
SHIELD
RED
BLACK
SHIELD
RED
BLACK
SHIELD
1=SHIELD
2=RED
3=BLACK
T=RED
R=BLACK
S=SHIELD
RED
BLACK
SHIELD
1-CONDUCTOR SHIELDED CABLE
SHIELD
1=SHIELD
2=RED
3=BLACK
T=RED
R=BLACK
S=SHIELD
SHIELD
RED
21
MALE
RED
BLACK
SHIELD
1-CONDUCTOR SHIELDED CABLE
RED
BLACK
RED
RED
BLACK
SHIELD
To Input
13
RED
BLACK
N/C
MALE
2
3
1
1=SHIELD
2=RED
3=BLACK
T=RED
R=BLACK
S=SHIELD
(CHECK: NO STANDARD POLARITY ON EUROBLOCKS)
RED
+
BLACK
SHIELD
–
(CHECK: NO STANDARD POLARITY ON EUROBLOCKS)
24
–
+
RED
BLACK
SHIELD
RED (ANY UNBALANCED CONNECTOR)
T=RED
BLACK
S=BLACK
CROSS-COUPLED OUTPUT ONLY: CONNECT BLACK TO SHIELD AT THIS END
AND SET GROUND LIFT SWITCH TO ‘GROUNDED’ (IF PRESENT).
2-CONDUCTOR SHIELDED CABLE
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000 USA TEL 425-355-6000 FAX 425-347-7757 WEB rane.com
Interconnection-8
DOC 102907
WARRANTY
FACTORY AUTHORIZED SERVICE
Your unit may someday need to be serviced by the Rane Factory if you live in the USA. International customers should contact your
dealer or distributor for service. You must call the Rane factory before shipping. Please do not return your unit to Rane without prior
authorization.
Rane Corporation
To obtain service or a Return Authorization in the USA, please phone 425-355-6000
or Fax 425-347-7757
LIMITED DOMESTIC WARRANTY
RANE CORPORATION WARRANTS ALL RANE PRODUCTS (EXCEPT THOSE ITEMS CLASSIFIED AS WEAR PARTS, AND LISTED ON THE
MANUAL-1 PAGE OF EACH OPERATORS MANUAL) PURCHASED IN THE U.S. AGAINST DEFECTS IN MATERIAL OR WORKMANSHIP
FOR A PERIOD OF TWO (2) YEARS. WEAR PARTS ARE LIMITED TO A PERIOD OF NINETY (90) DAYS FROM THE INITIAL DATE OF
RETAIL PURCHASE FROM AN AUTHORIZED RANE DEALER—WEAR PARTS REQUIRE PROOF OF PURCHASE DATE. This limited
warranty extends to all purchasers or owners of the product during the warranty period beginning with the original retail purchase. Rane Corporation
does not, however, warrant its products against any and all defects: 1) arising out of material or workmanship not provided or furnished by Rane, or
2) resulting from abnormal use of the product or use in violation of instructions, or 3) in products repaired or serviced by other than the Rane Factory,
or 4) in products with removed or defaced serial numbers, or 5) in components or parts or products expressly warranted by another manufacturer. Rane
agrees to supply all parts and labor to repair or replace defects covered by this limited warranty with parts or products of original or improved design, at
its option in each respect, if the defective product is shipped prior to the end of the warranty period to the Rane Factory in the original packaging or a
replacement supplied by Rane, with all transportation costs and full insurance paid each way by the purchaser or owner.
LIMITED WARRANTY OUTSIDE THE U.S.A.
RANE PRODUCTS ARE WARRANTED ONLY IN THE COUNTRY WHERE PURCHASED, THROUGH THE AUTHORIZED RANE
DISTRIBUTOR IN THAT COUNTRY, AGAINST DEFECTS IN MATERIAL OR WORKMANSHIP, THE SPECIFIC PERIOD OF THIS
LIMITED WARRANTY SHALL BE THAT WHICH IS DESCRIBED TO THE ORIGINAL RETAIL PURCHASER BY THE AUTHORIZED
RANE DEALER OR DISTRIBUTOR AT THE TIME OF PURCHASE. Rane Corporation does not, however, warrant its products against any and
all defects: 1) arising out of materials or workmanship not provided or furnished by Rane, or 2) resulting from abnormal use of the product or use in
violation of instructions, or 3) in products repaired or serviced by other than authorized Rane repair facilities, or 4) in products with removed or defaced
serial numbers, or 5) in components or parts or products expressly warranted by another manufacturer. Rane agrees, through the applicable authorized
distributor, to repair or replace defects covered by this limited warranty with parts or products of original or improved design, at its option in each respect,
if the defective product is shipped prior to the end of the warranty period to the designated authorized Rane warranty repair facility in the country
where purchased, or to the Rane factory in the U.S., in the original packaging or a replacement supplied by Rane, with all transportation costs and full
insurance paid each way by the purchaser or owner.
ALL REMEDIES AND THE MEASURE OF DAMAGES ARE LIMITED TO THE ABOVE SERVICES, IT IS POSSIBLE THAT ECONOMIC
LOSS OR INJURY TO PERSON OR PROPERTY MAY RESULT FROM THE FAILURE OF THE PRODUCT; HOWEVER, EVEN IF RANE
HAS BEEN ADVISED OF THIS POSSIBILITY, THIS LIMITED WARRANTY DOES NOT COVER ANY SUCH CONSEQUENTIAL OR
INCIDENTAL DAMAGES. SOME STATES OR COUNTRIES DO NOT ALLOW THE LIMITATIONS OR EXCLUSION OF INCIDENTAL
OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, ARISING BY LAW, COURSE OF DEALING, COURSE OF PERFORMANCE, USAGE
OF TRADE, OR OTHERWISE, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, ARE LIMITED TO A PERIOD OF TWO (2) YEARS FROM EITHER THE DATE OF ORIGINAL RETAIL
PURCHASE OR, IN THE EVENT NO PROOF OF PURCHASE DATE IS AVAILABLE, THE DATE OF MANUFACTURE, SOME STATES
OR COUNTRIES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS
MAY NOT APPLY TO YOU. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER
RIGHTS WHICH VARY FROM STATE TO STATE, COUNTRY TO COUNTRY.
Warranty-1
WARRANTY PROCEDURE - Valid in USA only
NOTICE! You must complete and return the warranty card or register your
product online to extend the Warranty from 2 years to 3 years!
TO VALIDATE YOUR EXTENDED WARRANTY: Use the postcard that came in the box with your unit, or go to www.rane.com and
click on New Product Registration. Fill out the warranty completely, being sure to include the model and serial number of the unit
since this is how warranties are tracked. If your Rane product was purchased in the U.S.A., mail the completed card or register online
with to Rane Corporation within 10 days from the date of purchase. If you purchased the product outside the U.S.A. you must file
your warranty registration with the Rane Distributor in that country. It is advised that you keep your bill of sale as proof of purchase,
should any difficulties arise concerning the registration of the warranty card. NOTICE: IT IS NOT NECESSARY TO REGISTER IN
ORDER TO RECEIVE RANE CORPORATION’S STANDARD TWO YEAR LIMITED WARRANTY.
WARRANTY REGISTRATION is made and tracked by MODEL AND SERIAL NUMBERS ONLY, not by the purchaser’s or owner’s
name. Therefore any warranty correspondence or inquires MUST include the model and serial number of the product in question. Be
sure to fill in the model and serial number in the space provided below and keep this in a safe place for future reference.
WARRANTY SERVICE MUST BE PERFORMED ONLY BY AN AUTHORIZED RANE SERVICE FACILITY LOCATED IN
THE COUNTRY WHERE THE UNIT WAS PURCHASED, OR (if product was purchased in the U.S.) AT THE RANE FACTORY
IN THE U.S.. If the product is being sent to Rane for repair, please call the factory for a Return Authorization number. We recommend
advance notice be given to the repair facility to avoid possible needless shipment in case the problem can be solved over the phone.
UNAUTHORIZED SERVICE PERFORMED ON ANY RANE PRODUCT WILL VOID ITS EXISTING FACTORY WARRANTY.
FACTORY SERVICE: If you wish your Rane product to be serviced at the factory, it must be shipped FULLY INSURED, IN THE
ORIGINAL PACKING OR EQUIVALENT. This warranty will NOT cover repairs on products damaged through improper packaging.
If possible, avoid sending products through the mail. Be sure to include in the package:
1. Complete return street shipping address (P.O. Box numbers are NOT acceptable).
2. A detailed description of any problems experienced, including the make and model numbers of any other system equipment.
3. Remote power supply, if applicable.
Repaired products purchased in the U.S. will be returned prepaid freight via the same method they were sent to Rane. Products purchased
in the U.S., but sent to the factory from outside the U.S. MUST include return freight funds, and the sender is fully responsible for all
customs procedures, duties, tariffs and deposits.
In order to qualify for Rane’s one year extended warranty (for a total of 3
years parts and labor), the warranty must be completely filled out and sent to
us immediately. Valid in USA only.
We recommend you write your serial number here in your owners
manual and on your sales receipt for your records.
SERIAL NUMBER:______________________________________PURCHASE DATE:_____________________________
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5000 TEL 425-355-6000 FAX 425-347-7757 WEB www.rane.com
Warranty-2
EU Declaration of Conformity
Product Model: AM1
Serial Numbers: 900000 – 999999
Product Type: Professional Audio Signal Processing
Manufacturer: Rane Corporation
Address: 10802 47th Avenue West, Mukilteo WA 98275-5000 USA
This declaration is issued under the sole responsibility of Rane Corporation.
The object of the declaration described above is in conformity with the relevant Union harmonisation legislation:
2014/35/EUThe Low Voltage Directive
2014/30/EUThe Electromagnetic Compatibility Directive
2012/19/EU
The Waste Electrical and Electronic Equipment Directive
2011/65/EU
The Restriction of Hazardous Substances Directive
2001/95/ECThe General Product Safety Directive
References to the relevant harmonised standards used in relation to which conformity is declared:
EN60065:2002/A1:2006/A11:2008/A2:2010/A12:2011
Safety for audio, video and similar electronic apparatus.
EN55103-1:2009/AM1:2012
Compatibility of professional electronic A/V apparatus emissions.
Compatibility of professional electronic A/V apparatus immunity.
EN55103-2:2009
Technical documentation for RoHS assessment of electronic products.
EN50581:2012
Additional Information:
Environment E2
CE mark first affixed in 2010
In order for the customer to maintain compliance with these regulations, high quality shielded cable must be used for
interconnection to other equipment. No changes or modification of the equipment, other than that expressly outlined by the
manufacturer, are allowed. The user of this equipment shall accept full responsibility for compliance with Union harmonisation
legislation in the event that the equipment is modified without written consent of the manufacturer.
EN55103-2 Immunity Results: Test Description
RF Electromagnetic Fields Immunity
80 MHz - 1000 MHz, 1 kHz AM, 80% depth, 3V/m
Conducted RF Disturbances Immunity
150 kHz - 80 MHz, 1 kHz AM, 80% depth, 3V rms
THD+N: 4 dBu, 400 Hz, BW 20 Hz - 20 kHz
Measurement
Conditions
<-50 dB
<-50 dB
<-45 dB
<-41 dB
<-44 dB
<-50 dB
Magnetic Fields Immunity
50 Hz - 10 kHz, 3.0 - 0.3 A/m
<-70 dB
Common Mode Immunity (Signal Ports)
50 Hz - 10 kHz, -20 dBu
<-68 dB
Common Mode Immunity (Data Ports)
50 Hz - 10 kHz, 0.2 A
150 kHz - 4 MHz
4 MHz - 13.5 MHz
13.5 MHz - 16.4 MHz
16.4 MHz - 36.79 MHz
36.79 MHz - 80 MHz
Bandpass re: 4 dBu, 1/3-octave
Bandpass re: 4 dBu, 1/3-octave
<-72 dB
Signed for and on behalf of: Rane Corporation
Place of issue: Mukilteo WA USA Date of issue: March 1, 2010
Function: Compliance Engineer
Name: Greg Frederick
Signature:
100-240V
50/60 Hz 13 WATTS
AM1
RANE CORPORATION
FAULT
POWER
POWER
RAD PORT
AUDIO TX
AUDIO RX
COMM
USB
AUDIO
USB
LOCATE
CASCADE
SHIELDED CAT 5e OR BETTER • 24 VDC @ 100 mA
MAIN OUTPUT
RECORD
2
AUX
INPUTS
MIC +48V
MIC +0V
WIRELESS MIC
CLASS 2 WIRING
1
4
3
MIC INPUTS
MIC +48V
MIC +0V
WIRELESS MIC
MIC
LINE
PATENT NO. 8,542,849
2
AUTOMIXER
1
AM1
MIC +48V
MIC +0V
WIRELESS MIC
MIC +48V
MIC +0V
WIRELESS MIC
5 VDC @ 500 mA
USB
CHARGE
ONLY
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