Originally Posted by Infinity
The input to the factory amp is two channel full range, so to answer your first question, no. Factory crossover is electronically done in the amp for the woofer and the tweeter has a cap on it for its basic crossover...the rest is handled in the amp. Factory amp is 40x6 at 2 ohms so its power is close to the head units.
NOT TRUE!!! The factory amp input is four channel.. If you pull out the factory amp from the passenger side footwell, there are 4 channels of input.. Unfortunately, to save money or whatever, infinity joined the wires about 6 inches up the harness from the amp, with the front channel inputs.... This is why you don't have sub control...
See my other post...
https://www.crossfireforum.org/forum...ead.php?t=9057
There is a PDF with the diagram of the wiring...
As far as changing speakers goes, just replace the deck and amp instead...
The stock speakers aren't bad at all, but the amp is garbage, and the deck sounds like any OEM deck "compressed". I put in the Focal 4-channel amp, and the fronts alone have more bass than the whole factory system... Every manufacturer cuts costs on the stereo somewhere... Usually the amplifier, then the deck, then the speakers...