PS 3A

PS 3A
User's Manual
PS 3/3A
R
LTO
www.altoproaudio.com
Version 1.1 Septemper 2005
English
SAFETY INSTRUCTIONS
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
"Electric discharge"
This symbol, alert you to the presence of uninsulated dangerous voltage inside the product enclosure, which constitutes a
risk of electric shock.
"Exclamatory point"
This symbol, alert the user to the presence of important operating and maintenance instructions in the owner's manual
included to the product.
Disposing of this product should not be placed in municipal waste and should be Separate collection.
1. Read Instructions
All the safety and operation instructions should be read before using the product and retain them for future reference.
2. Water & Moisture
This product should not be used near water and will be protect from atmospheric agents in fixed or temporary installations.
3. Heat
This product should be situated away from heat sources such as radiators, or other devices which produce heat.
4. Liquid Entry
Care should be taken so that liquids are not spilled into the product and that objects do not fall on.
5. Service Assistance
This product should be serviced only by qualified service personnel when :
a. Liquids has spilled or objects have fallen into this product, or
b. This product has been exposed to rain, or
c. This product does not appear to operate normally or exhibits change in performance, or has been dropped or its
cabinet / chassis damaged.
6. Package
The package of this product has been tested, inspect the package before open, if any damage is found, notify to
your dealer.
7. Hearing
This product produce high acoustic levels may cause permanent hearing loss, (SPL in for a defined period of time).
8. Installations
This product should be installed on the floor with a specific stand, according to the max weight, or in suspension
with a five points included in the cabinet (M10 1.5PH Length 30mm).
The suspension of more speaker cabinet in a vertical array is NOT advised.
1
1. PS 3 PASSIVE SPEAKER CABINET QUICK START
Make all initial connections with all the equipment powered off, and ensure that all the main volume controls are turned
completely down.
1). Connect one side of the speaker cable to the output CHA/CHB or Binding Post of your stereo power amplifier and
the other side to the input socket of your speaker cabinet.
2). Complete other connections as illustrated.
3). Turn on your mixer first, then the stereo power amplifier.
4). Turn up the volume controls of your amplifier to about 70%.
5). Use PFL function to get the proper input level for the mixer, and adjust the main mix level control to manipulate
the output level.
6). After using, turn off your stereo power amplifier first, then the mixer.
Speaker Cable
Speaker Cable
Stereo
Power Amplifier
Tripod
Mount
Right
Main Mix
Output
Left
Main Mix
Output
Tripod
Mount
Mixer
-. CONNECTION PLATE
LTO
R
(1) INPUT
PS 3
Receive the power coming from an external power amplifier.
(SPK +1/-1 connected; +2/-2 not connected)
(2) THRU
SOUND REINFORCEMENT SPEAKER SYSTEM
POWER HANDLING:
Direct LINK for connect in parallel a second speaker cabinet.
(SPK +1/-1 connected; +2/-2 not connected)
AES - 120 Watts
PEAK - 240 Watts
IMPEDANCE:
8 ohms nominal
MODEL
SERIAL
DESIGNED AND DEVELOPMENT IN ITALY
Besides, the passive crossover included the electronic protection
on the driver.
INPUT
THRU
LINK
(1)
2
(2)
2. PS 3A ACTIVE SPEAKER CABINET QUICK START
Make all initial connections with all the equipment powered off, and ensure that all the main volume controls are turned
completely down.
1). Connect one side of the signal cable at your audio mixer into output left /right (with Stereo-Jack or XLR) and the
other side of the cable into the line input (XLR) of your active speaker cabinet.
2). Connect the power cord to mains.
3). Turn on your mixer first, then the active speaker cabinets.
4). Turn up the volume control of the active speaker cabinets.
5). Use PFL function to get the proper input level for the mixer, and adjust the main mix level control to manipulate
the output level.
6). After using, turn off your active speaker cabinets first, then the mixer.
Signal Cable
Signal Cable
Power Cord
Power Cord
Tripod
Mount
Left
Main Mix
Output
Right
Main Mix
Output
Tripod
Mount
Mixer
(6) (5) (4) (7)
-. CONNECTION PLATE
VOLUME
(1) BI-POLAR MAIN POWER SWITCH
R
LTO
+4dBu
INPUT
LINK
CLIP
(2) AC POWER SOCKET WITH MAIN FUSE
PS 3A
ACTIVE SPEAKER CABINET
BI-AMP. POWER AMPLIFIER
BAL
(3)
SHIELD
(3) GROUND SWITCH
(4) CLIP INDICATOR RED LED
(5) LINK OUT ON XLR CONNECTOR
(6) STEREO JACK INPUT
(7) MAIN VOLUME CONTROL
"WARNING" TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.
220-240V
50/60Hz
MODEL
POWER
SERIAL
Use only with a 250V fuse
(2)
3
(1)
3. TECHNICAL SPECIFICATIONS
Descriptions
PS 3
Descriptions
PS 3A
System type
2 - way vented box
Powered System type
Bi-Amp. with analog processor
Continuos Power
120 Watt AES Standard
LOW Output Power
70W RMS Class AB
Peak Power Rating
240 Watt Peak
HIGH Output Power
50W RMS Class AB
Sensitivity at 1W, 1mt
95dB SPL
Max SPL at 1m
115.5dB SPL
Max SPL at 1mt
116dB SPL
Frequency Response
60Hz / 20kHz +/- 10dB
Frequency Response
65Hz / 20kHz +/-10dB
Impedance Low - High
Low 8Ohm - High 8Ohm
Impedance
8 ohm Nominal
Crossover Frequency
Complex EQ Processor
Crossover Frequency
2600Hz at 12dB/Oct
Protection Low - High
Limiter / Compressor plus PTC
Lower - Frequency
12" / 318mm - 2" voice coil
Low - Frequency
12" / 318mm - 2" voice coil
High - Frequency
1" Compression Driver 1" Voice Coil
High - Frequency
1" Compression Driver 1" Voice Coil
Horn Coverage H
High Frequency Protection Electronic Dynamic Protection
Dimensions H W D
660mm
(26"
396mm
15.6"
384mm
15.1")
V
90 H
45 V
Input Sensitivity
Line + 4dB / 1.23V
Input Impedance
30kohms Balanced 15kohms Unbalanced
Input with Jack / Link with XLR
Net Weight kg/lbs
16.25kg / 35.83lbs
Gross Weight lbs/kg
18.72kg / 41.27lbs
Connectors
Shipping Volume
4.83CFT
Plastic Reinforced Cabinet Trapezoidal & Monitor shape
The AES 2 - 1984 Standard specification by Audio Engineering
Society, is representative and commonly used for the measure
in Professional Sound Reinforcement.
It is defined as the square of the RMS voltage generated with a
pre-defined and band-passed Pink Noise Signal, applied continuously for 2 hours, on the assembled speaker cabinet.
In this way, the declared power of ALTO passive speaker cabinet,
is comparable to the RMS voltage value, measured on the equivalent power amplifier for the same value of impedance.
4
Amplifier Protections
Soft Start - Short Circuit DC voltage - Thermal Protection
External Control
Volume - Clip - Ground Switch
Power Supply
230Volt / 115Volt 50 /60Hz
Dimensions H W D
660mm 396mm 384mm
(26" 15.6" 15.1")
Net Weight kg/lbs
18.37kg / 40.5 lbs
Gross Weight lbs/kg
21.02kg / 46.34lbs
Shipping Volume
4.83CFT
SEIKAKU TECHNICAL GROUP LIMITED
No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151, Taiwan
http://www.altoproaudio.com Tel: 886-4-22313737
email: [email protected] Fax: 886-4-22346757
All rights reserved to ALTO. All features and content might be changed
without prior notice. Any photocopy, translation, or reproduction of part of this
manual without written permission is forbidden. Copyright c 2005 SEIKAKU GROUP
NF01970-1.1
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