Join Date: Oct 2012
2006 Hyundai Azera Limited
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but aren't those signals already amplified? what about to tap to the rear speakers wires that are just before the factory amp?
To properly answer the question we need one question answered. Do you have the infinity or non-infinity system?
If you have a non-infinity system and want the system to function as the factory system would, you will need 4 channels (usually 2 units) of hi-lo adapters so that the balance and fade work properly. This does get a bit complicated and adds expense. You could get away with just using 2 channels (front or rear), but that does limit your ability to adjust the fade control.
If you have the infinity system then it gets REALLY easy. you use the two channels going to the DVC woofer (8") and feed those into your choice of systems (hi level amp input if it has it, hi-lo adapter, or LC2i).
To be honest, I've never found the passive Hi-lo adapters to be of any serious quality. What I fond works best is the Audio Control LC2i (if you have the infinity system otherwise you want the LC6i @149.99 or LC7i @189.99). It's not horribly cheap (I think i paid around $90 for mine), but it also allows you to adjust for the factory systems tendency to reduce bass output at higher volumes. It's what I used until I ended up replacing the head unit.
My headunit has some nice x-over systems integrated so I removing mine.
I hope that answer wasn't too long winded...
BTW all prices quoted are from Crutchfield, so you can almost certainly find them for less.
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