Low bass coming from subs constantly.

cterie · Post by **cterie** » Mon Apr 18, 2011 9:30 am

I have a 2000 mustang gt without the mach system and I hooked up a dvd player, 2 subs and an amp. I had this hooked up for a couple years but I just rewired everything with better cables. Anyways as soon as I turn the car on even with the music off or down there is a constant low bass coming from the subs. I already tried 2 different remote wires, 3 different rca's and 2 amps, so I don't think it is any of those. I also grouned and regrounded multiple times. I'd appreciate any ideas that I havent thought of already.

loudwagon15s · Post by **loudwagon15s** » Mon Apr 18, 2011 7:15 pm

car on or car off? Rca's plugged in or unplugged?

cterie · Post by **cterie** » Tue Apr 19, 2011 2:57 am

Car is on and the RCA's are plugged in.

loudwagon15s · Post by **loudwagon15s** » Tue Apr 19, 2011 3:01 am

see if it still happens with the car off, rca's in/ car off, rca's out, that should help to pinpoint the problem.

cterie · Post by **cterie** » Wed Apr 20, 2011 2:46 am

Car on rca in = constant base hum
Car on rca out = nothing

Car off rca in = nothing
Car off rca out = nothing

I also noticed that there is a very slight bump in the base whenever I turn my cars fan speed up or down. This is when the car is on or off with the rca's in. So what does this tell you?

Do you think that I might need a ground loop isolator http://www.bestbuy.com/site/Fierce+Audi ... &st=ground

Bwcad1 · Post by **Bwcad1** » Wed Apr 20, 2011 6:03 am

Ground Loop for sure. An isolater will cut out some of your base response your better of finding the actual cause of the problem. Are you using the factory radio?

cterie · Post by **cterie** » Wed Apr 20, 2011 6:09 am

No I'm using a AVH-P5700 dvd player. Yeah I didnt want to use an isolator but I cant seem to find the problem. I Work part time at bestbuy and I had one the guys there check it out to and he couldnt find the problem either.

Bwcad1 · Post by **Bwcad1** » Wed Apr 20, 2011 7:06 am

Should have known it was a pioneer. Welp your pretty much F'd. Pioneer went to shit and had about 450 billion radios with that exact issue. Replace the radio with a kenwood/jvc and chalk it up to pioneer turning to shit. Ive replaced about 30 pioneer headunits for that exact problem. You can test it buy grounding the radio case/RCA's to the frame of the car.

cterie · Post by **cterie** » Wed Apr 20, 2011 7:41 am

Are you saying to ground the dvd player to the car or the metal cage it slides into? Also what should happen when I do this?

Bwcad1 · Post by **Bwcad1** » Wed Apr 20, 2011 11:17 am

The dvdplayer and the cage are touching right? so it doesnt matter. You should hear a noticeable change in the sound.