I purchased this item as an upgrade from my previous S-22 W-P which was a passive, unpowered unit

Unit came defective

This unit is perfect for a apartment, bedroom, and any smaller areas, though it would work anywhere.

Idk what's wrong maybe a defective unit

This unit stopped working within 5 months of purchasing

I was expecting a good experience like the rest of the crowd here, but my unit seemed to fail within days

If you are looking for a Small subwoofer with a Punch in Bass, this unit is perfect.

Tried a second unit, same results although not as bad as unit number one.

awesome unit

, that causes the unit to emit an annoying hum that only gets worse over time.

Even after turning off the source, the unit will hum loudly until unplugged.