Dual Kicker Comp R 12inch subwoofers in ported prefabricated kicker box. I downgraded to the single because it was too much for my sedan! These subs bang hard and have great frequency range and punch. It was only used for less than a week, and bought new. I am only listing as preowned as I did install it for about 4 days. I can hook them up to my car for you to hear. Serious buyers only. No low balling Willing to negotiate me but don’t come at me with crazy numbers. It’s a great sub and your getting it practically new.