Audio Annoyance..., my subs thump when the lights go on Options

[axelrduvirage]

AAAAAAAAAAAAARGH!!!!!

my subwoofers thump loudly whenever i step on the break, shift into reverse, open a door or turn on the lights. there is definately a DC pulse going down the audio line somewhere. will a capacitor cure this or is it just a crappy installation (BTW the audio shop that did the install is on my BLACKLIST already)

[D-Man]

well, i've picked up noise from fuel pumps, relays, lights, cellphones, pagers, wife (that noise is constant though ) and all kinds of stuff.

If that doesn't work, then I'd recommend checking your head-unit wiring second, Because you could have a common ground with a relay to the tail lights or w/e else is causing this "thud". Hell, your RCA's could have an expansion point near a whole harness

If thru the ground: You wouldn't hear it in your speakers because they do not play at those freq; as well as the fact that most head-units have noise filters built in. Amps usually do not; for the simple fact that they need to move that power quickly, not play with it and delay the music.

If your picking up noise thru the RCA's expansion points, then you'll need to tape that up or move the wiring a bit.

This post has been edited by D-Man: Aug 11, 2008 - 9:37 AM

[axelrduvirage]

well, i've picked up noise from fuel pumps, relays, lights, cellphones, pagers, wife (that noise is constant though ) and all kinds of stuff.

If that doesn't work, then I'd recommend checking your head-unit wiring second, Because you could have a common ground with a relay to the tail lights or w/e else is causing this "thud". Hell, your RCA's could have an expansion point near a whole harness

If thru the ground: You wouldn't hear it in your speakers because they do not play at those freq; as well as the fact that most head-units have noise filters built in. Amps usually do not; for the simple fact that they need to move that power quickly, not play with it and delay the music.

If your picking up noise thru the RCA's expansion points, then you'll need to tape that up or move the wiring a bit.

thanks D-Man.
i have quieted the "constant noise" in my Celica by inserting a "BitchSwitch". 4,99$ at Canadian Tire and 1/2 hour to install . it even lights up!!! when i have a few hours to myself i will go over the wiring and see what's up. like the title says it's an annoyance, not a problem-- for now.

peace

P.S. say hi to Jack for me (luv the sig)