10 inch alpine type r dual 2 ohm voice coil sub in a ported box paired with alpine v-power amp running at 700 watts rms at 1 ohm. 300 watt rms 4 channel Phoenix gold amp and a pair of 3 way 150 watt pioneer 6x9's. All in perfect working condition. This sub is quite impressive. Only owner. All serial numbers present. $275 bucks takes all of it!