I have a Kicker 12" Comp VR sub, dual 4 ohm voice coils in a Q logic bandpass box. 10 gauge wire in box, wired in parallel, 2 ohm final impedance. sounds good, nothing wrong with it. there is a small scratch on the cone, but it doesn't affect the sound at all. it's the older one with the black cone too. pictures upon request, or when I feel like taking some. $70+shipping with box, $60 without. rms on the sub is 400 watts.