The noise floor on my 990 is very low also.
I have a question. If you don't use a center how do you handle all the information sent to that channel that is specific to multi-channel material? Is some sort of matrix processing used?
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Outlaw 990/7500; QSC 2402; Sony dvd;
Dish vip 622; Panny 50PX75U; H/K 7200
Klipsch RF-7,RC-7,Cornwalls,Cornscala
HeresyII,Heresy; SVS 2039pc+; Sonic Super T