Originally Posted by James1549
I am not ready to upgrade yet, but I was looking over the wiring diagram for the radio and amp. I have several questions if someone could enlighten me.
The rear speakers have 4 wires to them. Are they powered, or passive?
There are four wires coming out of the radio, pin 3,4,5 6B. I assume these are non-amplified output channels? Is it listed somewhere what location they are for? Does an aftermarket unit need anything special to use the OEM amp without causing damage?
Last, why is the ABS controller invlolved?
Thanks, James
Ths stock infinity amp is a 6 channel amp (6 x 22 watts @ 4 ohm)
2 channels go to the front system (6.5" woofer and a tweeter)
The tweeter has a very simple 1 capacitor x-over.
4 channels go to the 2 subwoofers in the rear. They are double coil woofers.
You can also bridge the 4 sub channels if you want to replace the stock subs.
But it will be very hard to find 6.5" sub chassis thet fits to the stock mounting.
The infinity amp has a simple integrated processor which contains a x-over for the subs and a fixed eq for all speakers. So if you want to replace hm you have to think about the x-over and eq.
The hu out is a high-power output.
If you want to replace the hu, you'll have to use the speaker outs; not the chinch outs.
There are no problems with 50 watt hu's or so. Nothing special needed.
To replace the original hu, you'll need a special tool for Becker radios.
The signal from BCU/ABS is used for an automatic volume adjustment by the amp.
If you drive faster, the volume of the amp is higher/louder.