[quote="jeffm725"]dont forget.............the following....people who are much more versed in the inner workings of the Mac and preamped twins than Iam swear by the notion that an often overlooked ingredient of Jer's rig/sound was that he was driving the Mac at 2.66 ohms instead of 4, by using 3 8 OHM JBL's wired in Parallel.
I think it is the macintosh's limiter circuit which was one of the key's to garcia's tone. He was driving the mac to the point of clipping which was causing the limiter circuit to be activated, which is basically a hi-fi compressor-limiter.
What I've read it seems like this had a way bigger effects on is tone than the fact taht his speakers were mismatched.
The mac have an autoformer circuit which means you can plug any ohm speakers into any ohm taps. On my mac I run 8ohm speaers attached to the 4 ohm tap. The only reason I do this is because the way my speaker wire is configured it makes it easier. Beside, it has an autoformer so matching up the ohms really isn't taht important at all.
I hear absolutly no difference in tone when I am plugged into the correct tap or the wrong tap. Same volume, same lack of distortion, same everything.
But when I get the volume up so that the clip lights are firing when I hit my loud notes, thats when mcintosh really shines.