Sub not working efficiently

[tstapleton]

I installed a vibe 10" sub with in-built amp yesterday and it plays fine, but sometimes the sub just continously vibrates as if it can't handle the bass, so I have to listen to it on very low frequency but you can hardly hear the bass. Any ideas?

[KAMENi]

if you have a "subsonic filter" on that vibe, turn it on and turn it up. adjust it...

it doesnt let the frequencies under adjusted pass on the sub.

[tstapleton]

cheers Kameni. I had a look last night anyways and fed my changed the wiring around and it now works. I had a set of RCA's running from the back of the head-unit to the in-built amp, but changed it to be a mono lead from the subwoofer output from the back of the head-unit to the amp and it now works fine smileys/smiley14.gif