Keith Goode Posted December 2, 2021 Share Posted December 2, 2021 hi I have a onkyo tx-sr604 just purchased klipsh r820 reference speakers not enough bass picked up r120sw my amp only has 1 rca plug for subwoofer sub has 2 rca plugs frustrated can this sub be connected to this amp ready to return everything keith 504-228-5100 itd be nice to speak to someone who knows what’s up how to fix Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 3, 2021 Share Posted December 3, 2021 Hi Keith, welcome to the forums. Looking at the manual, if you only have a single sub out on your Onkyo, you can plug it into the rca for the left/lfe input on the sub. It should work fine this way. Some would use a Y adapter, but it isn't necessary. Bruce Quote Link to comment Share on other sites More sharing options...
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