B&C 18IPAL 18-Inch 3400W Power Soft Woofer
$904.713400 W continuous program power capacity
116 mm (4.5 in) split winding aluminum voice coil
32 – 1000 Hz response
B&C 21IPAL 21-Inch 5000W Power Soft Woofer
$1,171.265000 W continuous program power capacity
153 mm (6 in) split winding aluminum voice coil
37 – 1000 Hz response