How 2 hook up a active subwoofer to a receiver or integrated amp with no subwoofer pre out on unit - YouTube
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Een subwoofer aansluiten HEOS Drive
Would I be able to connect my powered subwoofer to Pre-Out of my Maratnz SR4021? : r/BudgetAudiophile
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What is a Pre-Out on an A/V Receiver and When Would You Use It?
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Why are these pre out / main in just connected like this? And also, would you use this to hook up a powered subwoofer? Technics SA-R921 receiver. : r/BudgetAudiophile