this things pound for 3 low end subs. i used to have this set up til i needed money and sold them. i had half of the power recomended for this and they still beat pretty hard. they are 3 12 ohm woofers bringing them down to a 4 ohm laod. i would recomend geting a 2 channal amp and bridging it so they get full power at 4 ohm. most 2 channal amps run 4 ohm bridged. remember, get a amp that pushes 700w rms @ 4 ohm. they need 675. you can get away with geting a 600w rms @ 4 ohm. but if your like me, id rather over power something, than to under power.
First off, Jason From Glendale Arizona.. dont know crap. their each 4 ohms, bringing them down to around 1.6 ohms. as for a dual channel amp to power em, no. use a mono amp for full power, and make sure it one ohm stable. dont overpower em like that guy or you'll blow em. 2 channel amps are for midrange and treble. as far as this box. its a good buy for the price. 3 12's lots of knock, decent box. value buy.
I have the same box and their each 12 ohms wired down to 4 ohms. I'm powering them with the mtx ta8502 bridged 500 wrms at 4 ohms, they pund!!! selling for 3 jl w3's in a sealed box and jl 1000/1, sound way better.