Originally Posted by dgage
I agree with Not on getting the IPR2-7500 foxes if you can ensure it would be fixed to like new.
Regarding amps FOR SUBS, I’m not at all impressed by the iNukes. The best subwoofer amps on the market are the SpeakerPower SP2-8000 (120V) or SP2-12000 (240V). However those are almost double the price of the IPR2-7500. So for most users for subs, I recommend the Peavey IPR2-7500 (DSP) or the slightly better sister amp in the Crest Prolite 7.5 (DSP). Those amps would give you about 80-90% of the capability of the SpeakerPower amps for about half the cost.
The PL7.5 / IPR2-7500 are definitely way better than the inukes, and are on my short list. They can run lower impedance loads and output double the power. Efficiency is much better as well. I don't know about that 80-90% of a speakerpower amp part... The IPR2-7500 run out of steam around 5kw... one channel of an sp2-12000 will outperform that... I think Luke measured like 8kw of output from one of those for sustained for a some seconds.
The speakerpower amps are definitely the way to go if you can put a low impedance load on them and have the budget. The PL7.5 is also a good choice. A clone will manage similar sustained output to the pl7.5, but it can do so with a higher impedance load and have another 3-4db of burst capability over it. Obviously there are drawbacks to the clone amps, but they're serious performers.
All that said, all the amps listed above aside from the speakerpower units are loud. I've yet to have the fans in my SP2-12000 even spin up. If you have the amps in their own room, not a problem.
My personal order of preference would be
1) SP2-12000 / SP2-8000 depending on electrical availability. the 8000 is more efficient by a few percent (~5) and can run on 120v, the 12000 requires 240 for full performance.
2) Smiths FP14000 clone
3) PL7.5 then IPR2-7500
If you were to group these in dollar to watts, it'd be ordered 2, 3, 1.
Honorable mention to the Powersoft K20 and K10, which are great as well, but they price themselves out of competition. They also sound like they're going to take off with all the 1U high rpm fans.