I'm not sure what pinoeer amp you have. If I remember correctly some are 1 ohm stable. In this case you would be able to wire everything in parallel. Meaning, with the voice coil, wire the positive to positive, and the negative to negative. Then wire the subs together positive to positive, and negative to negative. This will give you the total impedence of 1 ohm. If it isn't 1 ohm stable the best you could do is 4 ohms. To do this you would need to wire the voice coils in series and the subs in parallel. Meaning, wire the negative to positive and the positive to negative. Then take the subs and connect the positive to positive and the negative to negative. I hope this isn't too confusing. If you need further assistance let me know. Good luck
-Andrew Hawkins