Hi - does anyone have experience using the 8" Rythmik drivers in this kind of configuration? They each need 0.7 sqft of vol for a sealed box...two drivers per amplifier = 4 box speakers?....I don't know how far from the amp the driver can get (or what kind of tuning might allow distance). Nor do I know if you have to use their amp or if its possible to add the necessary circuitry to, say a rack mount style amp to run the speakers. Superficially, they would appear to provide a very small form factor and be capable of achieving a pretty broad range...any thoughts would be appreciated - Thanks!