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Connect Passive subwoofer (not amplified subwoofer) to an 7.1 or more home theater receiver. - YouTube
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The Difference Between a Passive and Powered Subwoofer
The Difference Between a Passive and Powered Subwoofer
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Question: How to safely connect a passive subwoofer with only speaker wire out to a receiver with no sub output, but A and B speaker inputs : r/diyaudio
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