Friend has an amp that has a LP/FULL/HP
where you can choose from all three, it seems to work on full and high, but when turned to low nothing comes from the sub, could this be because of the solder inside the amp? I'm working off an iPod currently because our Internet is having problem hard to research this. Supposedly it happened one day when he was listening to his music....

Is it a 4channel amp?

Two channel

Are u bridging the outputs? And are u using rcas or the built in L/O converter

/e is it an aftermarket h/u?

This post was edited by Nigma on Aug 23 2011 11:33pm

Yes they were bridged and I used my RCA's when I tested it in my car, and yes using my kiv-900, he was using it with a dual brand headunit

This post was edited by SKYE12977 on Aug 23 2011 11:36pm

The rcas are plugged into a subout on the radio?

Yes I tested three amps for him, and it was the only one that had a/the problem

If u tested 3 amps all on the same sub. Then yes I would say probably a bad solder joint on the amp somewhere

ok, I'll take it apart and see what's up with it, will post up pictures if I can't figure it out or if I get Internet on a computer

looking for someone i can talk to about trying to work on this amp