What was the issues besides shielding ? Just a little curious if u could elaborate =)
Edit: how did you get 4channels from it too
Please and thank you
mainly it was the PAC line driver being a total POS. it was picking up and amplifying most of the noise and it was also giving me a thump on turnoff. i replaced it with a JL Audio CL-RLC that is much nicer and has differential-balanced inputs which seemed to kill most of the noise. i also used ferrite beads on both RCA inputs going into it.
so with the noise fixed, the audio was still very "flat" sounding and i couldn't get enough volume. it seemed that neither the PAC or the JL Audio was driving the factory Infinity Amp hard enough. since the factory amp was really designed for speaker level inputs, i bought this tiny Lepai amp for $20 from Amazon: http://www.amazon.com/LP-2020A-Lepai...dp/B0049P6OTI/
with that little amp, and after playing with both the tone knobs on it and with the EQ on the tablet, the punch and volume really came back to the factory amp. it now sounds at least a good, actually a little better, than the factory radio. i had to run a noise filter on the power for the Lepai, it was picking up alternator whine, apparently it has a crappy power supply, but for $20, hey what do you expect.
eventually i want to get an aftermarket amp and all new speakers, and i can get rid of the Lepia junk, but will probably still need the JL Audio line driver since the bluetooth receiver seems to just output a really weak signal and is prone to picking up interference. i just didn't want to get into all that $$ right now.
for the 4 channel, i just tied the inputs on the infinity amp together. so i have no fade control, but both front and rear speakers work. when i get around to a whole new amp and such, i'll probably mount a 1/2 din EQ under the center armrest - most of them have a fader control and would also give me better tone controls. something like this: http://www.amazon.com/Clarion-EQS746...dp/B000EZV3T8/