Another question on high-power sub-/woofer amplifiers. I’m after an amp with, say, 750 to 1000W into 8 Ohms for some TD18H+ that will be in sealed cabinets and subject to (a yet to be determined amount of) EQ. The amplifier must be able to perform well up to 300Hz (x/o point to bass), quiet (it’ll reside in an open rack), reliable and not too expensive. I'm not interested in EQ features as all this will be done in a computer-based x/o. The options I’ve identified include QSC RMX 5050, Quest 3004, Yamaha P7000S and Crown XTI 4002. My initial preference was the Yamaha on the basis it’s rare for the fan to run in home environment but a P.A. / repair store (who doesn’t carry the brand) said that the new units aren’t that reliable. The QSC RMX 5050 seemed to have a quite a lot of fan noise (during a quick listen to an idling unit) and it’s not been possible to track down local suppliers with Quest / Crown. Any and all advice is welcomed.