Amp makes a thud them headunit is turned on

[Adam_Q]

Hi all!

Just wondered if the above is a problem? Its almost like the amp whacks full load through the sub when the HU is turned on. Does anyone know how to stop this or if this would cause a malfunction in the amp?

I'm using an Alpine HU with an Alpine Amp and Sub if that helps :)

See picture below
http://i167.photobucket.com/albums/u145/adz21/DSCF0983.jpg

[GabbaKid]

Have you got your wire's next to each other? if so its that.

It does it on my m8s, its not a problem or anything wrong.

If you want to get rid of it, put the battery wire running by itself along your car, and the rest the other side.

[Adam_Q]

The live is running down the left hand side and the other wires running down the right hand side... so i don't think this is the problem...

[kezajones]

mine used to do that when i had a rubbish earth and it used to get rid of the power by dumping it into the speakers

[JoNaH_FTW]

i think its just the amp powering on, the amp shouldnt be able to damage the sub anyway unless its far too powerful

[RK_Audio]

its a bad earth mate

[Predator_R32]

just about to say a bad earth would be the first thing that would come into my head too :y: