Older model Resonant engineering sub, I dont have too much info on it as it was custom hand made by David Moore. dual 2-ohm VC, convex dust cap, spider and surround are very tight, very high excursion as well. Guy i bought it from said back in 03 he hit 151db, box was tuned at 33hz, and said it was tested at 4700w rms. I had it in my Cadillac for a few months like 3 years ago and sold the car. I had it underpowered with 1500rms to it with no problems and the sub hammered. This is a serious sub. $250
Yep, HK4000D on 18v, the amp benched 4778w RMS @ 14v.
The enclosure was just a street banger, 6cu/ft and 120sq/in port tuned to 33hz. I made the box to fit with the spare, which I eventually took out. I never took it as far as I could have, and that I regret.
godamn that is a badass amp, i remember back in the day i wanted one so bad. That might very well been the same box i had, got it from the kid i bought it from, had it in my barn and it got wet so we burned it the other week