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Speaker-level inputs or line output converter (LOC)?
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![FosPower Y Adapter [8 inch] 2 RCA (Male) to 1 RCA (Female) Stereo Audio Y Adapter Subwoofer Cable [24k Gold Plated] 2 Male to 1 Female Y Splitter Connectors Extension Cord - Walmart.com](https://i5.walmartimages.com/asr/6a486dba-da74-45ff-bf5a-9672d6b0fc78_1.1f4b71d154227064f51ac502fadb0dec.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF "FosPower Y Adapter [8 inch] 2 RCA (Male) to 1 RCA (Female) Stereo Audio Y Adapter Subwoofer Cable [24k Gold Plated] 2 Male to 1 Female Y Splitter Connectors Extension Cord - Walmart.com")
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The Five Cs of Subwoofer Setup | Wirecutter
