snoopy316 said:
your going to want to run sopmething extremely clean on the jl subs. Look into one of jl amps, alpine, zapco or something along those lines. Dirty amps tend to damage jl subs
watts are watts, there is no such thing as a clean watt or a dirty watt. there is a difference between a pyramid 1000 watt amp though, and a memphis 1000 watt amp. the pyramid will probably put out about 200-300 watts where the memphis will put out somewhere in the 700 range with a stock electrical system. the only way a sub of any kind would be damaged by an amplifier is if the amplifier were being driven into clipping, which is not uncommon with subwoofers because they are generally in the trunk, and it would not be as audible as your speakers in the cab. its like Digital Designs saying DO NOT USE OUR SUBS WITH JBL amplifiers. there really is no real reason behind that, they just dont like JBL. I am not endorsing going out and purchasing a crap amplifier though. Processing is a different story altogether, and generally cheap amplifiers have crappy x-overs.
as far as subs for 2 12s.... I am again going to recommend CDT, I am sure you can get a pair shipped for right around 200.00 I am not trying to be partial to the brand, but they are an excellent deal. Infinity perfects were already said, they are a very good subwoofer as well. You can also get your hands on some image dynamics subs for that price as well, but I have yet to listen to their cheaper line below the IDQs, which are excellent.
anyway, here are some choices
CDT CL1215
Infinity Perfect
Image Dynamics IDQ
Resonant Engineering SX12 (1)
Alpine Type R 12s (loud, but not nearly as accurate as the rest)