“I have 2 polk psw10 and a onkyo tx nr 747 do I use a y cable on each sub and connect them to sub out 1 and 2 respectively”

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• A Y splitter may be used to connect the RCA cable to the PSW10 LT/RT Line Level input. You may also use either LT or RT alone. A slight increase in volume may be heard when using a Y splitter. I included notes from the service manual. PSW10— NOTE: The PSW10 subwoofer does not have an LFE input. Instead, use either the L or R Line input (another hookup option is to use a Y-split cable and connect both L and R Line inputs). After you make this Sub Out connection, turn the "Low Pass" filter fully clockwise. This will in effect create an LFE input.

  Answered by Polk Audio 3 years ago

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• You don't really need a y cable for the two inputs. It will operate fine with a single input connection.

  Answered by BOSSBOY 2 years ago

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