Jake,you can calculate how much power is needed to play 115 dB SPL with a speaker's rated sensitivity of 86 dB SPL/anechoic, at 5.5 Ohms (increase that from 86 to around 89 in-room).

i know for a fact that the amp would put out around 725 Watts/ch on fast peaks, and around 400 Watts/ch on steady signals, into 5.5 Ohms. The p.s. voltage: 64Vrms
the amp can run fine with 2.2 Ohm speakers, and it can put out as much as 20 amps.

Playback volume was at reference level.

See: http://www.blu-ray.com/community/gallery.php?member=Gelli
or: Axiom Gallery