muldsr01

I just installed Dom's unit and in dash dvd with audio going to aux. When I'm in any other mode but aux, the system sounds normal. When I pop in a dvd and switch to aux, i can hear the revving of my engine coming through the speakers. What did I do wrong, and how can I fix it? I have an 08 Tl-s

PhilB81

I had that happen in my 01 CL-S when I installed an aftermarket headunit and kept the factory amp. In my case, the aftermarket headunit was connecting with RCA into a harness that plugged into the factory wiring for the Acura. 1 thing you can do is buy Ground loop insulators like These for example. I bought mine from best buy. The problem is that those are often really cheap, I had to return about 4 of them till i found a set that works. It did remove about 99% of the sound. But about 4 months later, it again died, at that point I was fedup with it, so I just used the built in amp of the headunit and bypassed the factory amp.

muldsr01

Ended up grounding the Dom unit to the same point as the system. Works fine now.

I did some reading on those ground loop isolators, and they really are a last ditch effort. From what I researched, you should almost always be able to get rid of the sound via proper connections/wiring. All those things do is elimate high range frequencies, so you are losing audio, not fixing the problem.