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)

[axelrduvirage]

i may have mislead you on the origin of the problem. i should have said the ORIGINAL install of the headunit and speakers done by said audio shop seemed crappy to me. lots of engine whine (could be the unit itself according to research done on the Web) and loose wiring everywhere. the rest i have to blame on myself. i did the subs install and i do have a reasonably good idea of how these things work. i used heavy gauge wiring and all the runs are only as long as they need be. the audio runs down the passenger side and the power (B+) and remote wire run down the driver's side trough. the amp is mounted on a wedge that is holding the subs. the speaker leads are short and of equal length. the ground wire is 4G and is on an unpainted (sanded to bare metal) surface close to the amp and held inplace by gold-plated hardware. i will relocate it and see (listen?) for any changes. thanks for the tips.

@D-Man: the amp is only a few centimeters from the centre-rear of the cargo area. could it really be picking up RF from the lights coming on? that would be interesting if it were. i will reposition the amp and listen for changes.

peace

(edited for spellos and parentheses)

This post has been edited by axelrduvirage: Aug 11, 2008 - 9:25 AM