I put in my uncles 06 12" L7 and had it hooked up to my Clarion DPX11500 mono 1500 watt amp and my voice coils burned up in less then a day, i am going to buy another L7 this weekend but what is my problem with the voice coils?
i had my gain turn down pretty low just because i had the same problem with my two mtx 7500's so i brought it to my uncles friend who owned the local stereo shop and he said that i could have actually turned the gain up more, he did say that my crossover was a little higher then he would have put it. the sub actually blew about half a mile down the road from his house after i left though. he said that he thinks the coils were fried before i got there and the sub just gave up after i left. And my lights do dim pretty decently but not as bad as it was with the two mtx
Funny you should have a DPX11500 and an L7. I recently sold a DPX11500 to a guy that was going to run it on an L715. We did not do the install at our shop, but he went down the road and had another shop install in. The L7 lasted all of 2 days.
As for the L712 you have, your amp is capable of producing twice your subs rated power. So, if you send that sub a clipped signal from that 1500wrms amp...it is going to die VERY soon. You may be able to get alot of clean power to that sub, but in the long run you are way over powering it for daily use.
Make sure your electrical system can handle your amp. If not, the amp will clip without producing full power.
If you get another L7, get DVC 2ohm. Wire it to 4ohm w/ that DPX11500, that will be plenty of power for the L7. Also, set your SSF to just below your boxes tuning and the LPF to 80-100hz. Donot use any bass boost.
Set the gain correctly and make sure the sub is not being overpowered or distorting.
Do this and your sub/amp will last for a long time.