Transcript
PRO SERIES DA82 AUDIO DISTRIBUTION AMPLIFIER
DA82
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CONTENTS
1.
INTRODUCTION
Page 3
2.
TECHNICAL SPECIFICATIONS
Page 4
3.
INSTALLATION
Page 5
3.1 3.2 3.3
Inspection & Unpacking Operating Environment Power requirements & Line Voltage switch
Page 5 Page 5 Page 6
4.
DESCRIPTION OF CONTROLS
Page 8
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1.INTRODUCTION
The DA82 is a compact distribution amplifier, configurable for mono (1x8) or stereo (2x4) operation.
Each input and output is switchable between calibrated and uncalibrated mode, allowing instant adjustment of input sensitivity or output level. All inputs and outputs are electronically balanced on XLR's.
The DA82 is ideal for O.B. vans, sound reinforcement systems, theatres and any application where its ease of installation and set-up will be greatly appreciated.
The DA82 is buit in accordance with EMC and safety regulations encompassed by the «CE» marking guaranteeing trouble free integration in systems.
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2. TECHNICAL SPECIFICATIONS
ELECTRICAL Input Impedance
20kOm balanced
Maximum Input Level
+20dBu
Input Gain
adjustable -12 to +12dB
Output Impedance
75Om balanced
Recommended Output Load
600Om to infinity
Maximum Output Level
+20dBu
Output Gain
adjustable -12 to +12dB
Frequency Response 20Hz to 20kHz
+0, -0.5dB
Total Harmonic Distortion (THD) 1kHz,+4dBu
0.05%
Noise
-98dBu (unweighted 22 Hz - 22kHz)
PHYSICAL Input Connectors
XLR 3 pin Female, Pin 2 Hot
Output Connectors
XLR 3 pin Male, Pin 2 Hot
Size
482mm W x164mm D x 44 mm H 19'W x 6.45'D x 1.75'H
Weight
2.9 kg, 6 Ibs
Shipping Weight
3.6 kg, 8 Ibs
Temperature Range Operating
0°Cto+50°C
Storage
-30°Cto+75°C
Finish
DA82
Light Grey Epoxy
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3. INSTALLATION IT IS IMPORTANT TO READ THIS SECTION BEFORE USING THE UNIT.
3.1.
INSPECTION & UNPACKING
The model DA82 is carefully packed at the factory and the container designed to withstand handling in transit.
However, if transit damage is evident, DO NOT discard any of the packaging material and notify the carrier immediately, as it is he who is responsible for such claims.
The shipment should contain the following : •
The unit DA82
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Power cord
•
Operation Manual (this book)
If any of the above items are missing, notify your supplier immediately, and DO NOT discard any of the packaging materials.
The power cable may be supplied without a connector at the supply end. This is because there is no world-wide standard, and therefore the user should supply a mains connector for use with the unit.
3.2.
OPERATING ENVIRONMENT
The unit is designed to operate between 0 and +50 degrees Celcius (32 - 122° F) and in an atmosphere of relative humidity up to 80%. Should the unit be installed in an equipment rack, it is important to ensure that the operating temperature inside the rack does not exceed the upper limit. This may often be the case where the rack contains power amplifiers and a cooling fan may be necessary in such installations.
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Although designed to withstand hum pick-up, and it is VERY important that the unit is not installed close to any electro-magnetic fields which may be generated from power transformers or motors.
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3. INSTALLATION
3.3.POWER REQUIREMENTS & LINE VOLTAGE SWITCH
The voltage Is normally pre-selected at the factory for the country of destination, and a sticker will indicate the voltage the unit Is set for.
3 versions exist : •
230V
•
110-125V
•
100V
IF IN DOUBT CHECK THE TRANSFORMER TYPE INSIDE THE UNIT AND ENSURE THAT THE CORRECT FUSE IS USED ( 0.1 amp fast for 200-250 & 0.2 amp Slow blow for 100-125 ).
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4.
DESCRIPTION OF CONTROLS
FRONT PANEL 1) CAL/UNCAL switch : In CALibrated mode, the input section gain is unity at 0dB. However, this may be adjusted via trimmer (2). In UNCALibrated mode, the input gain is controlled by potentiometer (3). 2) Input gain trimmer : this screwdriver adjustement trimmer allows +\-6dB gain in CALibrated mode. 3) Input gain potentiometer : this potentiometer allows .±6dB gain in UNCALibrated mode. 4) MONO/STEREO switch : in Stereo mode, input A is distributed to odd numbered outputs, input B to even numbered outputs. In Mono mode, input A is distributed to all outputs, input B is not used. 5) CAL/UNCAL switch : In CALibrated mode, the output section gain is unity at 0dB. However, this may be adjusted via trimmer (6). In UNCALibrated mode, the output gain is controlled by potentiomer (7).
6) Output gain trimmer : this screwdriver adjustement trimmer allows .±6dB gain in CALibrated mode. 7) Output gain potentiometer : this potentiometer allows +\-6dB gain in UNCALibrated mode. 8) Power ON Led : this led is illuminated as soon as the unit is connected to the mains. The DA82 is designed to operate continously so it has no mains switch.
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4. DESCRIPTION OF CONTROLS REAR PANEL
Inputs are electronically balanced on XLR connectors. Wiring is as follows :
Pin 1
Shield
Pin 2
Hot
Pin 3
Cold
If the input source is unbalanced, Pin 3 should be connected to Pin 1. However, it is preferrable to use a balanced cable with Pin 3 and Pin 1 tied together at the source, not at the input of the DA82.
Outputs are electronically balanced on XLR connectors. Wiring is as follows :
Pin 1
Shield
Pin 2
Hot
Pin 3
Cold
If the output connection is unbalanced. Pin 3 should be connected to Pin 1. However, it is preferrable to use a balanced cable with Pin 3 and Pin 1 tied together at the input of the equipement receiving signal from the DA82.
The mains receptacle is at the EEC standard with the center prong connected to the ground. For obvious satefy reasons, it should always be connected. The DA82 can be operated continously ; thus it does not have a mains switch.
The mains fuse must be replaced only with the same type and value.
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DA82
230Vac
100mA T
100-125Vac
200mA T
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