My SQ setup:
JVC Digifine 2.1 KD-SH77 (CD deck/tuner)
PPI DEQ230 (30 band eq)
Xtant X604 amplifier (4x75 watt amplifier)
Xtant XIS2.5 (5.25" 2-way point source driver located in kick panels)
JL Audio 8IB4 (8" subwoofer in OE front door location behind OE panel)
Sound Quality: very impressive. (see sig below)
RTA: with a different setting, a flat line is possible every time (but it sounds horrible that way)
SPL: enough to shake you in your seat at 18Hz, but otherwise it is "loud enough". A dB number is irrelevant.
Note: I have another X604 powering two Xtant 12" subs that I use to develop 130+ dB. These are not on for sound quality evaluations.
Please let me know if you have any other questions.
