Hi Tls49 - am curious. Which speakers with which amps ?Ct0517, As well as I remember, the speakers were DM604, or maybe DM605, and the last amp used was a 200w Forte 6.
I do agree that if Wemfan wants to try the MC275, he should use the 4 ohm tap since the speakers' impedance drops to 4 even though it is 8 ohm nominal, however I disagree with your bi-amping suggestion, as this will create a coherence problem. When bi-amping, you should always use identical amps in a vertical configuration. Read this post by a well respected amplifier designer, especially the last paragraph,
http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1234896660&openfrom&6&4#6
Also, while working at that Audio dealer, was able to attend a CES show, and fortunate to meet Nelson Pass and his staff since we were a Threshold/Forte dealer. They also said that bi-amping should be done with identical amps, however their amps at that time did offer a slight twist to this. The Forte 6 and Forte 4 are identical, however the 6 is biased for A/AB at 200 watts, and the 4 is biased for pure class A at 50 watts, so use the 6 on the bottom and the 4 on the top.
Elee, absolutely nothing offensive in your posts. My son plays guitar, and he is definitely a Fender guy. He has a vintage black face Princeton that is in very nice condition, however another amp he really likes is one we found at a pawn shop for $20 many years ago. It is a small tweed Gretsch that is an exact copy of the original Fender Champ.