Pioneer TSSW251 10" Shallow-Mount Subwoofer 800 Watts-MSRP$155-SALE	Product Code: TS-SW251 Price: Check Latest Pioneer 10" Shallow Mount Single 4 ohm Subwoofer  TS-SW251 Maximum Music Power:  800 Watts Nominal Power Handling:  200 Watts  Frequency Response:  20Hz ~ 144Hz  Sensitivity (Efficiency):  89 dB Impedance:  4 Ohm Magnet Weight:36 oz Recommended Enclosure Size:0.45 cu. ft.  (0.35 ~ 0.7 cu. ft.)