All or most cinema's with Altec VOTT's are bi amped. And to find a low power amp these days is not a small affair. THe QSC RMX 850 or 1450 seems to do the job real good with the 515 G
and the 288 DRIVERS.

QSC - RMX Series Amplifiers


As for contractors and architects they should pay more attention to the dimensions of the A-4 and A-5 behind the screen. These speakers don't need to be soffit mount.

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