@ 14.4 volts though,Most vehicles run @ 13.5-14v with all the electrical components running and sometimes lower @13.4-13.2v while running a/c and lights , so your amplifier with a stock alt,and not the big 3 being done, and decent sized battery, you are prob only getting Half of the rms out of that amp.its wired to a 4ohm load because back in the 90s monoblocks were rare and most amps were 4ohm bridgable. so this set up would be perfect off a thunder 2300 rated at 600rms at 4ohm. it reality the 2300 would do close to 900rms...
All those old school subs were GREAT man, and still sound awesome.I had 4 StillWater Kicker 10s..Wished I never gotten rid of them now.Great subs they were and banged in sealed enclosure very nicelyi will tell you this, those blue thunder subs were awesome back then and still compare well to todays stuff. I still have one and recently replaced the much newer competition mtx sub in my car with my old blue thunder and there is absolutely no difference in sound, pressure or anything! It rumbles just as hard as the new sub!