www.altronics.com.au
Redback® Proudly Made In Australia
12
Redback® A 4427
8 Channel Public Address Mixer
11.0 FIRMWARE UPDATE
It is possible to update the firmware for this unit by downloading updated versions from www.altronics.com.au or
redbackaudio.com.au.
To perform an update, follow these steps.
1) Download the Zip file from the website.
2) Remove the Micro SD card from the A 4427 and insert it into your PC.
3) Extract the contents of the Zip file to the root folder of the SD Card.
4) Rename the extracted .BIN file to update.BIN.
5) Remove the SD card from the PC following windows safe card removal procedures.
6) With the power turned OFF, insert the SD card back into the A 4427.
7) Turn the A 4427 ON. The unit will check the SD card and if an update is required the A 4427 will perform the update
automatically.
12.0 SPECIFICATIONS
OUTPUT LEVEL:
.........................................0dBm
DISTORTION:
............................................0.01%
FREQ. RESPONSE:
........................140Hz - 20kHz
SENSITIVITY
Mic inputs: ....................................3mV balanced
Line inputs:..........................................100mV-1V
OUTPUT CONNECTORS
Line out: ................................3 pin XLR balanced
Switched out: ..............................Screw terminals
INPUT CONNECTORS
Inputs: ..............5 pin euro connectors or 2 x RCA
............ 3.5mm stereo jack front panel
24V DC power: ...........................Screw terminals
24V DC Power: ...........................2.1mm DC Jack
Remote triggers: ..........................Screw Terminals
CONTROLS:
Power:..........................................Standby Switch
Bass:...........................................±10dB @ 100Hz
Treble:.........................................±10dB @ 10kHz
Master: ....................................................Volume
Inputs 1-8: ...............................................Volume
INDICATORS:
....................Power on, MP3 error,
..................MP3 active, Signal Present, VU Meter
POWER SUPPLY:
..................................... 24V DC
DIMENSIONS:
≈................... 482W x 175D x 44H
WEIGHT:
≈............................................... 2.1 kg
COLOUR:
..................................................Black
* Specifications subject to change without notice
All Australian made Redback products are covered by a 10 year warranty.
Should a product become faulty please contact us to obtain a return authorisation number. Please ensure you have all the
relevant documentation on hand. We do not accept unauthorised returns. Proof of purchase is required so please retain
your invoice.
