Wayne Parham Messages: 18884 Registered: January 2001
Illuminati (33rd Degree)
Where subs are concerned you can either have deep bass, high efficiency or small size - never all three. If you want deep bass and high efficiency, you need a large box. Sounds like that's out. Since we're talking subs here, extension is probably not something you can move much on. Might be able to live with an octave less on the bottom end though. But in the end, I think you'll probably have to live with lower efficiency unless you can go to something the size of a hornsub. Your switching (digital) amp idea will provide a pretty good amount of power in a lightweight package, and it doesn't draw a lot of (quiescent) power supply current either. Should drive the subs nicely.