Due to space limitations in my entertaiment center I find it necessary to move my PE plate amp (mounted in a box) to the garage. The amp is driving my DIY IB sub. I only use the IB for 2 channel music. It is being driven by the sub output from an Onix P-3000 preamp and is crossed over at 75Hz. I only occasionally diddle with the volume setting on the plate amp and never change the phase or crossover setting. What I think I need is a line level control installed between the preamp and the plate amp. That way I could crank the level control on the plate amp all the way up and be able to control the volume of the sub without having to walk back and forth to the garage. No it's NOT that far... I'm just that lazy! The other option would be a speaker level volume control (Niles?) installed between the plate amp and the IB sub. I see the downside to this method as needing to run a bunch more speaker wire (LR-to-Gar-to-LR-to-IB). Has anyone seen anything like a comercially built line level control in a decent looking cabinet? If so can you point me in the right direction? I'm reasonably handy with a soldering iron. Can I build one. Seems like all it would take is a decent pot and a couple of RCA jacks. What value should the POT be? THANX!