Still great subs, I would buy them too, but go with nG on this one and put a DMM on them just to make sure...Hmm,well the guy im buying them from says they are 4 ohm svc.Trav
or you could wire them to the load the guy had them at and use a 2 channel amplifier bridged... Having a 1ohm option and 4ohm option is always nice for finding amps.You should parallel them all. All the positives together then to the amp, all the negatives together then to the amp.
This will yield a 1ohm load. Look into something 600-1000rms @1ohm.
nG
Depending on the power he chooses to use...or you could wire them to the load the guy had them at and use a 2 channel amplifier bridged... Having a 1ohm option and 4ohm option is always nice for finding amps.