Very good96/100

Good subwoofers don't have to be expensive, as the Hifonics Mercury woofers show. Sure, there are better ones, but here you get a lot of bass at an astonishingly high level for little money.
With an RMS power output of 400 W, the subwoofer driver handles high loads continuously without distortion.
Fitted in a 20-litre bass reflex enclosure, the subwoofer achieves a lower cut-off frequency of 32 Hz.
A nominal impedance of 4 ohms enables connection to many typical car hifi amplifiers.