it seems that im overdriving the d3 to make it loud i have to have it on 40 the car i have it in as a 95 corvette with the delco gold bose system ... and i still am using the bose speakers and amps( each speaker is amped) i got a wiring harnes from metra but its going through the low level out on the d3 to the low level in on the harness would it be better to go high level to low level with an adjustable converter so i can give the amps more power and give the d3 a break? what do you think??

You can try that, or just get a line driver.

metra sucks...gives me alot of power probs and sound probs.

maybe its that damn interface

try using peripheral or pac.