This is a pair of DD SW2508 Subwoofers brand new in the box.

SPECS

Burst Power - Watts 3,200 watts
Impedance Dual 4 Ohm
Fs - Hz 43.74 hz
Qms 5.536
Qes 0.947
Qts 0.808
Vas - cu ft 0.294
Driver Displacement - cu ft .07 ft^3
Shipping Weight - lbs 20 lbs