aftermarket sub

[truea4b6]

Been searching around but no luck ,wanting to adding base to my b6 cabriolet with stock headunit and bose speakers (no stock amp and sub).my question is which wire is the amp turn on wire on the stock headunit? Any help will
Be greatly appreciated !

[diagnosticator]

The wiring diagrams do not indicate what wire if any is used for the remote amp turn-on signal from the HU. If the amp is connected to the infotainment CAN, then that is how the amp is turned on and off. Otherwise, you will need to use a volt meter to find the wire at the amp that energizes with the HU on and deenergizes with the HU off.

[Matt Devo]

the pinout on the head unit itself tells you exactly which one:



it's the '+' in the line-out section

[truea4b6]

Thanks for the help !

[Matt Devo]

Thanks for the help !

np. However, it's probably easier just to tap it at the Bose amp itself in the rear, rather than at the head unit. It's pin 25 if you have the 25-pin connector, and pin 6 if you have the 32-pin connector.

[truea4b6]

Mines only come with bose speakers, no sub and amp in my trunk !

[Matt Devo]

Mines only come with bose speakers, no sub and amp in my trunk !

I'm pretty sure even the cab has the bose amp behind the trunk carpet on the pass side - let me check the Bentley

edit:

[truea4b6]

I though I should have amp and sub , but after tearing my whole trunk I did not see any amp in the trunk of passenger side....

[SJorge3442]

I though I should have amp and sub , but after tearing my whole trunk I did not see any amp in the trunk of passenger side....

Sub is in the rear window deck. Amp is on the drivers side I believe in the trunk.

[jesse500]

If you have a stock Audi symphony stereo (A4Q sedan, 2004). It comes with stock Amp & Sub, does it not? Is there a way to upgrade those two components, without doing any additional wiring, and utilizing stock speakers?

[19jdog]

I used a line-output converter for my sub with the RNSE. works well

[truea4b6]

No sub on my rear window deck I'm 100% sure,

[diagnosticator]

Sub is in the rear window deck. Amp is on the drivers side I believe in the trunk.

The OP has a Cabriolet.

[Matt Devo]

The OP has a Cabriolet.

the info I posted is for a B6 cabriolet :)

[truea4b6]

I teared the whole trunk carpet still don't see amp at all!

[diagnosticator]

the info I posted is for a B6 cabriolet :)

Right, I was commenting on advise about the rear shelf, etc.

[Nidjosaur]

I think the best and easiest way to get that is with a line output converter, you can buy ones that have a remote on them already. when they get the signal from the speakers, they sent a signal to turn on the amp.
and you will need one anyway if you want a line out signal for your amp.