Dunno, I see all three...........
Hmm. Oh well.
I just got the mod done and the amp put back together. Boy...what a difference. Now I don't hear that old fan all the time. Its practically silent. Even with my ear right up against the amp. Now I will be able to hear my music when its a low volumes :bigsmile: I also ran a 10-15hz test tone for about 30 seconds, with the sub near full excursion, so the amp was near full power also, and the fan got just a little bit louder. Not much at all. I still can't hear it, and I'm les than a yard away from the amp.