Hi, Please don't fool me, but I'm a bit lost with impedence questions... hey, I'm no techie... The SWR SM-900 head has the following specs : Stereo Mode (per side) 400 watts @ 4 Ohms 240 watts @ 8 Ohms 144 watts @ 16 Ohms (minimum load = 2 Ohms) I'd like to know a few things, cause I'm completely lost. 1/ If I wish to use a SM-900 on bi-amp mode, and if I use, say, a Big Ben (18", 8 ohms) and a Goliath III (4 x 10", 8 ohms), will I get 2x240 or 2x400 W ? 2/ What if I use the same config, but with a 4 ohm Goliath III instead of a 8 ohm one ? Really sorry for these stupid questions, but at this time I'm not able to concentrate myself on this question of impedance... And also I'm not that familiar to bi-amping... Thanks in advance !