wondering if theres a way to turn down the signal to the factory amp, ive added a sub to my avic d3 with a small amp in the right side storage compartment on my h3, but i just cant turn the pioneer up enough to push the amp to my liking.....its an old ma audio 2 channel im running mono on a 4 ohm infinity, so i know its not gonna make a ton of power, but maybe it can get better.....also dont wanna have to but another amp if i dont have to...i havent screwed the amp down yet just in case i had to replace it.

 

I don't remember if it's a PAC but, I have an adjustable box on my stereo wiring adapter, Works like a champ. It even has an adjustment to turn that stupid door chime off.

If it's still not enough buy a line driver, like a PLD-1. Can boost your rca signal to 8volts.

 

yeah thats next step. i messed with the loudness a little today and its better but to boomy now.road trip tomorrow, no messin with it till monday.