You have a 4 ohm DVC sub. With the coils wired in parallel you will need an amp that is stable into 2 ohms.

I'm running a single JL 10W6v2 D4, very similar load to yours. I had an Earthquake PH-D2 for 3 years, great amp, caught fire recently.

I replaced it with a Butler Tubedriver 1250(VERY rare tube monoblock) Best car amp ever used. I ran too warm in the confined location i am using, and I removed it.

3 weeks ago I replaced it with the new JL 1000/1 class D mono amp. Not as sweet as the tube amp of course, but it has a bit more speed, and clamp on the bass. This amp barely gets warm, even at painful volume. It also have a nice built in bass eq.

There is no such thing as too much amp. Even at low volumes the bigger amp will sound better, and distort less.

John C.