Can any one help? I have a punch 240 and all of a sudden my sub started making a thumpin sound. I checked the ground and everything seems kewl. has anyone had this problem b4. I dont know to much about amps and stereos. Ireally dont want to buy another amp if this is something that can be fixed.

 

does it happen when you turn your radio on and off? when you change stations? when does it happen?

is it a constant?
aftermarket headunit? or factory? give us some more info about it. is it hooked up through a rca line in converter?
did you install it?

 

its constant but it would also do it when i turned off my stereo.

 

re check your ground. make sure it is as tight as you can possibly get it. if it moves around its gonna make some noise. make sure all your connections are tight and nothin is like barely hangin on.

are your power wires and rca's next to each other?

 

the deck is a sony explode and the amp is hooked up via rca no inline converter. And yes i hooked it up but have never had any problems. Do amps just give out over time?

 

Its been so long since ive looked but i think that the rca are seperate from the power but ill have to double check. and the ground is tight and its on bare metal.

 

well i we had that problem when me and my g/f's dad were hooking up her system but it ended up being the line in converter we were using, but thats not the case in your situation. i would just check all your connections. pull your head unit out and check all your connections on your rcas make sure they are plugged it tight. and possibly re ground it somewhere else and shorten your ground wire a little bit if possible.

and when you have your headunit out make sure all speaker wire connections are tight.

 

thx 4 ur help ill see what i can do

 

your amp is toast

 

from experience most of the time when I have a problem like that it turns out to be in the head unit. It's giving a signal to the amp to make the speaker do that. Amps are stupid and just do what they're told to do. you might try running an external audio source...like a boom box with rca preouts. If it stops with the external source you'll know it's the head unit or an rca problem

 

thx Ill try that