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Wiring Amp into S3

Jamesh Jan 20, 2007

  1. Jamesh

    Jamesh Member

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    Just started to upgrade the sound system in my S3. Ive changed the wiring using AndyMac's pinout drawing whichs gives me a rear left and right preout. Trouble is the amp i've got needs an input for each chanel. I can have the rear speakers working but not the sub and vice versa depending on which channel the RCA goes into.

    Can I split the preout signal coming from the headunit?

    Any other ideas?

    Cheers

    James
     
  2. AndyMac

    AndyMac Moderator Moderator

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    Yes James you can just get two "Y" splitters and feed the rear pre-outs to all 4 channels. Might be worth checking that the amp does not have a switch to do this, most decent amps have an input select switch which can take a single input and feed it internally to all 4 channels, or some have a ch1/2 RCA output, which you can then connect to ch3/4 with a short RCA lead.
     
  3. Jamesh

    Jamesh Member

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    Thanks for the quick reply, My Amp is about 5 years old and has none of what you mentioned. What i've done is brought a pre-out lead adapter and run the remote, front and rear preouts to the rear of the car. The front output is running the sub via a bridged output and the rear out is running the speakers via the two remaining channels. Ive not powered it up yet due to running out of light. Before I do is there anything wrong with what ive done?
     
  4. AndyMac

    AndyMac Moderator Moderator

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    Yes that's a better solution as it'll enable you to use the fader to give you sub level control.
     

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