help updating to subwoofer bi-amp set
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Product reviews:
Samuel
2026-01-09iphone 7 Plus
Bi-Amplifier Subwoofer - 2.1 Output -18 bi amp subwoofer
bi amp subwoofer
Porter
2026-01-10iphone X
Connecting 7.1-channel speakers: Bi-amp bi amp subwoofer