Amazon.com has Polk Audio PSW10 10" Powered Subwoofer (black) for
$83.88 with free shipping.
Product Features
Size: 10 Inch | Color: Black
Single 10-inch subwoofer in black with built-in high-current amplifier for big bass
Equipped with one 10-inch polymer-composite dynamic-balance cone driver
Laser-based Klippel measurement technology for improved linearity and deep, precise sound
Non-resonant all-MDF enclosure construction with 0.75-inch-thick baffles and internal bracing
Measures 14 by 14.38 by 16.12 inches (WxHxD)
