Antec Tech just called me again - 3 times today - WOW! Anyway, a bit of further clarification to the fan only leads and the use of fans. If you connect three "standard" case fans (and I would take this to mean three 80mm fans not of the stealth, silencer, etc. variety) then the circuitry should be able to handle them and function to reduce noise. If you are installing stealth types (silencer, stealth, ??) which are already designed to run at reduced speed, the noise reduction circuitry will not work properly and you should simply connect those types to a normal 4 pin molex connector.
I do hope this is as clear to the rest of you as it is to me.
edit: I think this would be a great time for AntecCSR to interject some really clear guidance on the use of the "fan only" connectors. Your tech has me so confused that I'm not going to use them at all. I was using three PC Power & Cooling Silencer 80mm fans and he said that was the reason my fans simply stopped running????
edit again: make that FOUR calls today from Antec. Last call from a nice, oriental-sounding person that wanted to make sure that I had gotten a satisfactory answer. He basically echoed what I typed above. I suggested CSR posting here to clarify this and he said they would do so. Me thinks Antec takes customer support very seriously.