Redback A 4031C Product Manual

Redback® Public Address Products
Product Guide
®
A 4031C 30W 100V Public Address Amplifier
A 4031C 30W 100V Public Address Amplifier
Overview
Key Features
This PA amplifier has been designed to meet the requirements of
small to medium sized professional public address installations.
Features such as push to talk (PTT) auxiliary muting, three
combined balanced line microphone / stereo line inputs, tape out,
and separate bass and treble controls give this amplifier a wide
scope of installation applications, including schools, public halls,
workshops and sporting complexes. This unit features thermal
overload shutdown, over current and short circuit protection.
3 Australian made
High Performance
3 Protection against over-voltage, over current, thermal run-away and
short circuit load
Frequency response extends from 40Hz to 10kHz at a total
harmonic distortion (THD) of less than 0.5%. Output may be 100V
line or low impedance (8 - 16Ω) speaker loads.
VOX Muting Functionality
The VOX circuit allows telephone paging via line input one or two
(selectable internally). When paging via the telephone, all other
line inputs are muted (ie. background music). Features variable
sensitivity and time delay settings.
3 10 year manufacturer warranty with local product support
3 3 Inputs suitable for either microphone or line level, or for use as
microphone and line level coupled together
3 Bass and treble controls (on both microphone and auxiliary inputs)
3 Full 30W RMS output (100V and 4 -16Ω outputs)
3 Push to talk muting
3 Internationally accepted IEC mains socket (240V AC operation only)
3 Stereo RCA sockets for all auxiliary inputs (configured to mono internally allowing standard stereo equipment to be directly connected)
3 Fully balanced microphone inputs
3 Tape output, suitable for recording, or for connection to a second
amplifier
About Redback® Public Address Products
Redback® products are proudly designed, engineered and
manufactured in Australia.
Each unit is covered by a comprehensive 10 year parts and labour
warranty. Redback® offers rock solid reliability from over 40 years
experience in the commercial sound industry. Redback® offer locally
available servicing and parts, plus the ability to offer feedback direct to
the manufacturer.
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®
A 4031C 30W 100V Public Address Amplifier
Rear Panel
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2
3
4
5
6
7
8
9
10
11
12
1 240V AC input
5 RCA stereo line (input 3)
9 XLR 3 pin balanced (input 2)
2 100V line terminals
6 RCA stereo line (input 2)
10 XLR 3 pin balanced (input 1)
3 8-16Ω terminals
7 RCA stereo line (input 1)
11 DIN 5 pin unbalanced (input 1)
4 RCA stereo tape output
8 XLR 3 pin balanced (input 3)
12 6.35mm jack unbalanced (input 1)
Specifications
Electrical
Power Output:
Distortion:
Output Line:
Signal to Noise Ratio:
Frequency response mic:
Frequency response mic:
Mic 1 sensitivity:
Mic 2 & 3 sensitivity:
Line inputs sensitivity:
240V ac power:
Power supply:
Protection:
Muting:
Indicators:
Controls
Volume 1:
Volume 2:
Volume 3:
Bass:
Treble:
Mechanical
Dimensions:
Weight:
Redback® Public Address Products
Product Guide
Connections
30 watts RMS
< 0.5% @ 1kHz
100V or 8 - 16Ω
Typically 75dB below rated output
52Hz - 10kHz, -3dB
40Hz - 10kHz, -3dB
2.6mV balanced or 3.2mV unbalanced
2.6mV balanced
150mV
IEC power connector
240V AC
800mA AC, 3A x 2 DC internal
PTT and VOX via microphone (-79dB)
Power
Controls mic 1 / line 1
Controls mic 2 / line 2
Controls mic 3 / line 3
±10dB @ 100Hz
±13dB @ 10kHz
300W x 220D x 74H mm
≈4.8kg
Inputs
Mic 1
Mic 2 & 3
Line 1, 2 & 3
6.35mm (unbalanced)
5 pin DIN (unbalanced)
3 pin XLR fem. (balanced)
3 pin XLR fem.
(balanced)
Stereo RCA
Notes: The 5 pin din has facility for PTT (push to talk) muting. The PTT
contacts will mute input 2 (mic 2 and aux 2) and input 3 (mic 3 and aux 3).
The PTT contacts will not mute Aux 1 input. We recommend that you connect
only one microphone at a time to input 1.
Outputs
Speakers
Tape Out
Screw terminals for 100V line
and 8-16Ω
Stereo RCA
Notes: Minimum impedance for 100V loads is 333Ω (when only the 100V
output is used). We do not recommend using this amplifier with a combination
of low impedance and 100V line speakers.
Architect Specifications
The amplifier shall have a power output of 30 watts RMS. The unit shall have 3 inputs,
each input consisting of one balanced XLR microphone input and dual RCA line input. In
addition, microphone 1 input shall have a 5 pin DIN balanced input and a 6.35mm jack
unbalanced input. Frequency response shall be 52Hz – 10kHz (-3dB) for microphone
inputs and 40Hz – 10 kHz (- 3dB) for line inputs.
The unit shall have separate volume controls for each microphone / line input and tone
controls providing 10dB cut or boost at 100Hz and 13dB cut or boost at 10kHz.
The unit shall operate from 240V AC with a LED indicator, and be fuse protected. The unit
shall have overload protection via DC fuses.
The amplifier shall be capable of delivering full power of 100V RMS into a 333 ohm (30W)
inductive load with less than 0.5% distortion measured at 1 kHz and with system hum and
noise typically -72dB with all volume controls at minimum. The speaker outputs shall be
100V and 8 ohms provided via screw terminals.
The amplifier shall be a REDBACK model A 4031C.
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