Speakers are a hodge podge.
Fronts - Klipsh Chorus II's
Surrounds - Triangle Celius
Rears - Polk Audio RTI/A3
Center - Vandersteen VCC-1
Sub 1 - Vandersteen V2W
Sub 2 - Martin Logan grotto i
Room size is a bit harder to judge. The living area is about 12' Wide by 14' long, but it's an open floor plan. There aren't any walls blocking the living area from the dining and kitchen. We literally crank up the music and listen to it everywhere in the house.
Obviously we don't have any neighbors that are close by.
Also, the fronts are driven off a separate amplifier so the amplifier in the receiver really only needs to drive five speakers.
The Polks are 8 ohm
The Traingles
Sensitivity (dB/W/m) = 92
Freq Response (+- 3Db) = 45Hz-20kHz
Continuous Power = 120 W
Peak Power = 240 W
Nominal Impedance = 8 Ohms
Minimal Impedance = 5 Ohms