User Manual
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Redback® A 4275C/85C 125/250W Mixer Amplier
2.10 Fitting the Optional A 2711 MP3 Module
To install the optional MP3 module, follow these steps.
1. Make sure the amplier is turned off.
2. Remove the lid from unit.
3. Unscrew the front cover piece from the front
panel (keep the screws).
4. Locate the header inside the front of the
amplier. See Fig 2.10A
5. Push the header cable from the A 2711 MP3 module through the front panel and connect it to the 5 way header
on the front board of the mixer (see g 2.10B). Take special attention of the orientation of the plug.
6. Screw the module in using the four screws removed from the front cover piece.
7. Ret lid and secure with screws.
Once tted if music is playing from this module it will over-ride the rear input 6. The output level is adjusted via the
volume 6 control on the front of the amplier.
NOTE: If a music source is connected to the Music input on the front of the amplier it will override this MP3 Module and
the rear input 6 source.
A 2711 Specications A 2711 Pinouts
Output level: 500mV(800mV volume max.)
Playback frequency: 20Hz - 19KHz
THD: <0.3%
Signal to noise ratio: >65dB
File types: MP3/WMA/WAV
MP3/WMA decoder: 32-320kbps decoding
WAV decoder:
PCM single track 128-768kbps
PCM double track 256-1536kbps
IMA-ADPCM single track 32-192kbps
IMA-ADPCM double track 64-384kbps
Storage: USB/SD Card (maximum 32GB - FAT16/32)
Supply voltage: 12V DC(10-15V operating range)
Power consumption: <2W
Dimensions: 120W x 56.5D x 22Hmm
Setup
A 2711 Header
Fig 2.10A Fig 2.10B