A 4020A • 30W 2 Input 100V Public Address Amplifier
Designed to meet the requirements of small to medium sized professional public address installations, delivering an output power of 30W RMS. Frequency response extends from 40Hz to 10kHz at a total harmonic distortion (THD) of less than 0.5%. Output is 100V line only. This unit includes thermal overload shutdown, over current and short circuit protection. With one balanced microphone and two stereo line inputs, with recessed treble and bass controls, it’s perfect for simple installations requiring minimal inputs. VOX circuit on input 1 mutes input 2. Features variable sensitivity and time delay setting.
- Balanced microphone input
- Built in VOX muting circuit
- Stereo line inputs
- Bass and treble tone controls
- 240V AC operation
- Built in short circuit protection
- Thermal shutdown circuit protection
Developed, designed & assembled in Australia.
Since 1976 Redback PA products have been manufactured in Perth, Western Australia by Altronics. With over 40 years experience in the commercial audio industry, we offer consultants, installers and end users reliable products of high build quality with local product support.
Backed by an industry leading 10 Year Manufacturer Warranty.
Our Redback products have a long tried and tested history of bulletproof reliability. Altronics offers a 10 Year Warranty on all Australian Made Redback products. Our local in-house service department has all the know how to answer technical queries and provide timely service.
Distortion: < 0.5% @ 1kHz
Output line: 100V
Signal to Noise Ratio
All volume controls min, typically 72dB below rated output.
All inputs display same S/N ratio.
Mic: 52Hz – 10kHz, -3dB
Line: 40Hz – 10kHz, -3dB
Mic input: 2.6mV balanced
Line inputs: 150mV
Volume 1: Controls mic 1 / line 1
Volume 2:. Controls line 2
Bass: ±10dB @ 100Hz
Treble: ±13dB @ 10kHz
Power: On/off switch
Speakers: Screw terminals
VOX only (-79dB)
Mic input: 3 pin XLR balanced
Line inputs: RCA stereo socket, bridged mono
240V AC power: IEC power connector
Power supply: 240V AC
Fuse protection: 1A AC, 1.5A x 2 DC internal
Size: 300W x 220D x 74H mm