would it be a good idea to mount the amp (that powers the subwoofer) on the top of the sub box?
Am I going to run into noise problem, since the amp is so close to the sub driver?

Help would be appreciated.

Thanks.

Cris

i know someone who has a PPI mounted right on top of a .8 cuft. enclosure housing a Boston pro 12 in his veedub. Sounds awesome, no problems. It's common practice to have amps installed in very close proximity to drivers especially with space-saving custom jobs, so I wouldn't worry much about that.