Compact Amplified Active Subwoofer by Carrozzeria, Pioneer 
Pioneer TS-WX22A Active Subwoofer

Carrozzeria by Yawar Masood, on Flickr
TS-WX22A Features:
- 20cm Amplified Subwoofer System
- 150 Watt Peak Power
- Frequency Response: 40 - 200 Hz
- Sensitivity: (1W/1m) 101 dB
- IMPP composite cone woofer with Strontium magnet woofer material
- Strontium Magnet
- Built-in variable: LPF (50-125 Hz -12dB/oct.)
- RCA & Speaker level inputs
- Enclosure Volume: 5 liter
- Dimensions: (W x H x D) 250mm x 265mm x 110mm