MTX 12" Subwoofer, Box & Amplifier ?

MTX 12" Subwoofer, Box & Amplifier together, both items were bought as a package for around £299 just over 1 1/2 years old, £150, perfect working order and just as new, Details: 1x 12" MTX Road Thunder 750W Subwoofer, 1x 12" MTX Slot port Carpeted Subwoofer box, 1x RT251 750W Monoblock Amplifier, Amplifier Spec: RT251 : Fullrange Mono Block amp Power : 1x 750W - 2 Ohm, THD+N =1% High pass x-over : 12dB/oct variable from 40 to 400Hz Low pass x-over : 12dB/oct variable from 40 to 400Hz Signal-to-Noise Ratio (1 watt) : > 80dB THD+Noise (Distortion) (1 watt) : = 1% Frequency Response (±1dB) : 20Hz-30000Hz Maximum Input Signal : 6V Maximum Sensitivity : 100mV Dimensions : 310 x 180 x 55mm SUBWOOFER SPEC RT12DV : Slotported enclosure RMS Power : 250W Max Power : 750W Impedance : 2Ohm Frequency response : 30Hz - 150Hz Sensitivity : 92,8dB/2,83V/1m Woofer diameter : 30cm (12’’) Xmax : 12,0mm Dimensions (HxWxD) : 37,0x50,0x41,5cm