I picked up a couple of ID subs from a guy at work. He claims they are SPL's they are 15'' subs with a double stacked motor and a stamped basket. The claim i dont trust is that the were built for 2200rms a coil, i saw quad coils which were even more rare and then the dvc most said would handle 1100rms since what tiny amount of info i could find suggested the use of the IDQ specs for enclosure design ive chosen a bandpass. this will be a blow through in my 06 nissan frontier, I think im settled on 4 sealed 8 ported, tuned to 45 with 2 10'' sonotube ports, i might be able to get away with 8's if i can do my own flares.
Any serious suggestions are welcome. i did not list an amp because i dont know what these things will handle but i have an AP30001d sitting around.