The Panasonic home theater system features a non-powered subwoofer, powered by an amp in the DVD/Receiver unit. The subwoofer uses an enclosed 6-ohm, 6.5" woofer and a side-firing 10" cone Kelton passive radiator. The subwoofer is not video shielded. The woofer's enclosure features four rubber feet to prevent vibration. There is a 13' length of speaker wire attached to the...
This is a high quality Koss Subwoofer. It features 6 Ohm Impedance, 100 Watt Power, a 7" woofer, Super Bass Woofer, and a Passive Design.
This is a nice Panasonic SB-WA15 Placement Subwoofer. It features a 6" woofer, and for SB-WA15 Subwoofers.