Audi A5 amp pre-outs

[kgthomas]

Hi amafzal,

Thank you again for the really good post it is really informative and has answered another question I was going to ask where to find a good manual. As I can't find a haynes manual for this car.

I had a quick look this morning on my way into work and it looks like my car uses the CAN system. I think the only way I will know is to plug in the adapter and see if I get a voltage out of it.

The subs I am planning on putting in are 2 12" subs but they are also 2 Ohm subs so will blow most amps as most amps run at 4 Ohm. They also take 450W RMS and 1000W peak so would be well under powered by the factory amp.

Looking at my setup in the car it looks as if there is a separate amp for the sub under the spare wheel as there is a lot of wires running into it.

Hopefully I will be able to get an output from the back of the head unit.

Cheers Keith

[amafzal]

The amp under the wheel should be your B&O amp, although thats not the usual place for it to go, they usually place it in the left side compartment.

If you slide the concert radio out (after having remove the 4 bolts around it), there should be a diagram on the top showing the pins and you might be able to take the audio signals going to the B&O amp, and double them up to go to a separate aftermarket amp for your subs, you'll have to work out the voltage signal coming out at that point to make sure it matches to the amp you have.

Otherwise, go onto ebay and grab yourself a second hand B&O sub removed from an A5, ive seen quite a few on there, and just hook that up straight to the current amp and that should do the job quite well, certainly does a good job in mine (and I dont even have B&O).

[kgthomas]

Yeah I have an amp in the left hand side compartment also. The box under the spare wheel is all enclosed and only looked quickly at it but it had quite a lot of wires running into it. Not unless it is a dual voice coil sub which might explain it.

Yip think the first step is to remove the radio and see what way it is laid out on the rear.

The second B&O sub is an option also.

Cheers Keith

[amafzal]

The box under the spare wheel, just realised and remembered, is the battery!

[kgthomas]

The box under the spare wheel, just realised and remembered, is the battery!

Ah as I said never looked too close at it. I must get a proper look at it.