while considering speakers i put together a set that has the mains at 8 ohms and the center and rears at 6 ohms. (they are sold this way by MFG (Axiom) I'm under the impression that all speaker ohms must match? my receiver is "100 watts per channel,min. RMS, driven into 8 ohms at 1 kHz" on all channels in surround mode. there is a switch for 4-6 or 8 -16 ohms on the receiver. are you aloud to mix ohms like that? will i be able to drive the speakers(with mixed ohms) without frying my receiver? what is the proper ohm setting(4-6,8-16) on receiver with those speakers(main 8, center and rears 6) and ohms if its OK to mix? should i play it safe at get all 8 ohms speakers? if its so bad why would they sell packages like that? help!! maybe i just don't understand.