Passive subwoofers lack built-in amplifiers, requiring an external amp for power. Active subwoofers are more convenient, cost-effective, and plug-and-play than passive options.

If your receiver only has powered sub outputs then you are stuck with the option of getting a passive sub. However, it seems odd that the decent A/V receiver doesn't have subwoofer pre-outs.

In this episode of eCoustically Speaking, find out the differences between passive, powered, and active loudspeakers.

Ashly Audio, a leader in sound reinforcement technology, has launched a new addition to its compact subwoofer line, the SP-8.1P passive subwoofer. With 150w handling power, the new SP-8.1P subwoofer ...