15" Memphis Audio PR1524 15" PR 300W Subwoofer 2 Or 4 Ohm Direct Vent Voice Coil $219.95 Memphis Audio MOJO1512 15" 1500W Pro Subwoofer 1 Or 2 Ohm Direct Vent Voice Coil $899.95 Memphis Audio MJP1544 15" MOJO 750W Pro Subwoofer 4 Ohm Dual Voice Coil $329.95 Memphis Audio MJP1522 15" MOJO 750W Pro Subwoofer 2 Ohm Dual Voice Coil $329.95 Memphis Audio MB1524 15" MB 500W Subwoofer 2 Or 4 Ohm Direct Vent Voice Coil $349.95 Memphis Audio M71512 15" M7 750W Pro Subwoofer 1 Or 2 Ohm Direct Vent Voice Coil $539.95