Sound System Upgrade Information - Standard (NON-HK models)

[unL33T]

If I wanted to put a 4 channel DSP in line, what would be the best way to give it full signal while maintaining fader control? I would think if I just feed it the signals for the front and rear speakers I'd lose bass input to the DSP, no?

 

[unL33T]

Wanting to add 2 speakers to the rear doors. I have the standard stereo, I.e. non HK.

Does the stock amp have rear speaker high level outputs, but maybe not wired?

If so, the amp might auto-detect these 4 new wires and and also enable front/rear fader control ?

From my reading (I have not done it yet), the wires exist from the radio to the doors and the coding needs to be changed to activate them.

 

[Vlada_H]

From my reading (I have not done it yet), the wires exist from the radio to the doors and the coding needs to be changed to activate them.

That would be really cool! I don't need a HK upgrade, I just want to have two rear speakers because my kids are always saying "radio louder, dad!"

Has anyone successfully tried to connect the rear speakers, and probably also tried to code the head unit in order to see the "fader" in the menu?

 

[alohart]

Has anyone successfully tried to connect the rear speakers, and probably also tried to code the head unit in order to see the "fader" in the menu?

Aren't the rear door cards for HK-equipped i3's different from those without? I suppose holes could be cut through the door cards for speakers to be mounted.

 

[Vlada_H]

Aren't the rear door cards for HK-equipped i3's different from those without? I suppose holes could be cut through the door cards for speakers to be mounted.

Yep, they're different. Cutting holes is possible, but the question is: are there cables already prepared in rear doors? Or is it actually possible to have 4 channels (front, rear) with the standard factory amplifier? Maybe somebody already checked that. I don't wanna disassembly rear doors just to check how it looks like inside. That's why I better try to ask before