Audio Upgrade for BMW X5 E53

[glassjoe]

Originally Posted by heuer21

I am looking into keeping my OEM DSP head unit but replacing the factory amp and speakers as well as putting a JL stealth box where the exsisting woofers are in the trunk.
With a balanced 5 volt out going to an aftermarket amplifier located where the crap stock one is w/ nice components. Then mount the mono amp in the trunk because I do not have Nav or CD changer back there. Or just get a 5 channel amp.

Something like that...
Any thoughts?

I have a 2004 X5 w/DSP (no Nav.) and wants to replace the DSP amp with aftermarket to power the 10 stock speakers. How do you wire up the 10 OEM speakers to a 4-channel amp is where I am lost? Thanks!