How to Connect a Subwoofer to a Receiver or Amplifier
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
How to Connect a Subwoofer to an Amplifier
How to connect a power amplifier to passive loudspeakers - YouTube
The Five Cs of Subwoofer Setup | Wirecutter
The Difference Between a Passive and Powered Subwoofer
Can You Use a Power Amp with an Integrated Amp? (& How To)
How To Connect A Subwoofer To A Receiver Without Subwoofer Outputs