Ok so for the past like 5 months I have had these subs wired up like this and have not had a problem. I just recently heard my friends system which is tearing mine apart basically and he is running 2 12's on a 1300 watt amp.

What I have are 2 Alpine Type R subs (dual 2 ohm) both are 10's and a kenwood KAC-9102D amp. I currently have it wired like this



The amp has 2 positive and 2 negative ports. I used to have each sub wired to one port. But just recently one of my friends changed it and said that I would get more sound if I put both positives in one positive port and both negatives in one negative port.

Is this correct or is it wrong. While im at at just curious but is it wired right at all?