Klipsch Reference SW-308 Powered Subwoofer $199/FS @ Newegg

Newegg is clearing them out, dropped another $100 from less than a week ago. Good choice if you need a compact sub.

Klipsch SW-308 [newegg.com]

Specs:
Driver Units: 8" (20.3cm) Active / Dual 8" Passive non-resonant Woven Fiberglass drivers
Power Rating: Amplifier Power: 300 watts continuous @ <2% THD
Frequency Response: 26Hz-120Hz ± 3dB
Connectors/Inputs: L/R Line-level RCA jacks, WA port
Power Supply100-120V / 220-240V~50/60Hz 3.15A (Auto-voltage switching)
Dimensions & Weight11" x 11" x 11" (H x W x D) / 24 lbs.Features
FeaturesCompact subwoofer with stylish finish
- Pristine black satin finish complements impeccable design

Highly damped, non-resonant woven fiberglass driver
- Produces tight musical bass

BASH Digital Hybrid Amplifier
- Efficiently produces reliable, high-powered sound

4-layer copper voice coil on aluminum former
- Provides enhanced low-end output

1-watt standby mode
- Energy-saving featureManufacturer

Warranty
Parts 2 years limited
Labor 2 years limited