Car Stereos: confuse the impedance of my kicker solobaric L7, kicker solobaric l7, monoblock amp

Question
i bought a kicker solobaric L7 about a week ago. i was told it is the 2ohm impedance type. but when i saw the backside of the sub, i found that the first coil just ve a different impedance in the pos(+)4ohm and negative(-)2ohm. and the second coil is also the same. what is the impedance type of this L7? i am just wondering how to combine this one to my 2ohm solobaric. and what is the impedance will i got if i combine them in parallel or series? and also can i use a single monoblock amp Venom VD2600D to control these 2 subs?
the amp spec is: output power @4 ohm : 600W
                             @2 ohm : 1200W
                             @1 ohm : 2400W

thanks in advance for the answer.

Answer
Eddy,  It sounds like the sub you got has dual 4 ohm coils.  Wired in parallel, they create a 2 ohm sub.  If you have another 2 ohm sub, you could then wire it in parallel with this sub and create a 1 ohm load to the amp, and it would put out 2400 watts.  Hope this helps, Scott