Is it possible to connect an unpowered (no AC cable) subwoofer to a Yamaha RX-V483 AV receiver? If so, how? - Quora
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400W Pure Bass Sound Box Passive Subwoofer Special Frequency Divider Subwoofer | eBay
Subwoofer wiring diagrams
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
Passive subwoofer won't work with new AV receiver | Home Theater Forum
Subwoofer Wiring Diagram and Connection Procedure - ETechnoG
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SUBWOOFER how to connect - Active-powered and Passive-not powered - YouTube