Super, thanks for the tip! I'm also going to try running a direct ground line from the HU; that apparently solves the popping issue in some cases.

Hi all,2004 M&T pkg, and I'm trying to circumvent the double signal amplification issue by running signal out from my aftermarket HU's preamp RCA outs (Alpine CDA-105). Signal level is great with this setup, only caveat is that every time a system sound change occurs (next CD track, for example)...

Thanks for all the tips, all. Update: I had an old twisted-pair RCA cable, which I was able to cut and solder to the wires feeding the under-seat amp. Now I'm feeding the amp with proper preamp signal, and it has greatly improved the sound, specifically the balance.The Scosche unit does look like it...

Hi all, I'm new to genvibe, and am experiencing undesirable audio from my new aftermarket HU.After research and much forum searching, I suspect the problem is caused by the fact that I'm running amplified signal from my HU to the M&T amplifier, when is should be pre-amp level signal. I've notice...