Hey, up for sale are two awesome subs. The first is the ARC audio ARC 15. This is an awesome sounding sub, and is definitely a SQ sub. It shares the same motor as the famous Flatline series, not the other motor in the arc 12. D4 voice coil.
In this one you can see a little glue residue, but you have to look hard.
backside. i put a little weatherstripping on the back for a tight seal, but it is no big deal.
pictured with the ss RL-P 12:
Here is what a tech at ARC audio said about the ARC 15.
The ARC 15 is based on the ARC Flat Line 12" motor (similar to the ID SPL) we use a poly cone rather then paper. The SQ is good but getting punch will require some careful box tuning. The 2.6 cu. ft box you have may actually work ok for this. I have attached a graph of your response curve and the recommended box curve. The 3.0 cu ft box goes a little deeper but that is about it.
I use 2 of the 15's in my car in 5.2 ported at 30Hz and it works fine. Goes deep but still has good attack. Most people are surprised it's 15's."
$160 shipped conus
Next is the Soundsplinter RL-P 12.
everyone knows about these. Dual 4. Looks great, performs great, one slight crease in the cone. The surround had been separated in parts, but i glued it back, and it performs great!