How to connect a power amplifier to passive loudspeakers - YouTube
Passive subwoofer won't work with new AV receiver | Home Theater Forum
Home Theater Subwoofers
Can I connect speakers which are not active, to my active subwoofer? In other words can the subwoofer's integrated amplifier also drive speakers? - Quora
RX-V373 Subwoofer Hookup Examples
How To Connect A Subwoofer To An Old Amplifier Or Vintage Receiver | Subwoofer, Home stereo amplifier, Subwoofer amplifier