I bought a QSC RMX 1450 yesterday. I took it home and the fan is LOOOUUUUDDDDD.
Well, I hope nothing ever goes wrong with this amp and I need warranty work because I sure as heck voided it last night. I cut the fan wires because I am tired of screwing with this. I have been trying to buy an amp for two months now.
I have super-quiet fans that I set to blow directly through the fan tunnel of the amp and I am getting good air flow so I'm not worried about overheating since my 340's are 8 Ohm speakers.