JL Audio 10W1v3-4 10-inch (250 mm) Subwoofer Driver, 4 ΩW1v3 10 inch Subwoofer (300 W, 4 ) The 10W1v3 is an outstanding choice when space is very tight and amplifier power is moderate. It features shallow mounting depth (4. 6 in. 117 mm) and a compact motor structure, allowing it to comfortably fit in a lot of spaces where a typical 10 inch driver will not. Lacking a pole vent, the rear of the motor structure can be placed directly against an enclosure boundary. Excellent excursion capability and linearity