There are a number of forums on the web regarding swapping out "noisy fans" on pro amps for home use. Charles, how much heat does your amp put out without the fans if you push it? The noisy fan(s) are one of the concerns I have if I were to get a pro amp. You use an external fan just in case don't you? I think I saw one of your posts where you had a fan off to the side of your amp.
When you get a chance, have a look at some of the EPX amps from Behringer and the Tapco(Mackie) J2500...these are also class "H" amps, and see how they compare to the GX-5. Also compare the Behr'er EP and Tapco J1400 to the GX-3....some of the similarities are uncanny. Whether this is a case of copying, subbing to the same production company or if all these amp builders basically ended up with the same design conclusions, I don't know. Maybe one of the tech guys here can enlighten us/me a little.
Last edited by Adrian; 10/20/09 07:14 PM.