okay i have 2 JL 12' W3v2 in a sealed box. My amp is Pioneer GM-5200T. http://www.amamax.com/picaramgm76m.html

My subs are dual voice coil and are wired in series, Also my amp is bridged to connect to my subs.

My problem is that my at times my subs are really low, like it lost alot of power, but it still works but seems as it is very weak. Then few minutes later they come back.

I believe that my problem is the wiring so i plan to buy a wiring kit. But i also plan on buying a new amp. I don't really know what kind of amp is good for my subs. I don't really understand 1 channel amps or 2 channel amps.

what amp do you guys think is good for my 2 JL W3v2 subs??

 

It sounds like the system is wired correctly. Bridged and in series(assuming they are 4ohm). The problem is most likely the wiring. Could be the rca wires. But could also be the amp or the output on the cd player. It terms of amps you need 600W rms power. You could get the JL A1800 or the Apline PDX-1.600 . Those are good yet expensive. EDIT: I forgot to say, that subwoofers do not need stereo so you buy a mono amp. A 2 channel would work the same, but you need to select mono with the switch on the side of the amp, and still bridge the amp.