HK 146 and RM6750 subwoofer wiring question

[santanumishra]

I bought a new Harmon Kardon receiver and Polk RM6750 speaker system. I am confused how to connect Subwoofer to the reciver. HK has only one pre-sub out but subwoofer has two input. What kind of cable is required to make this connection?

[Ricardo]

Welcome to the forum. Some subwoofers say in the manual which of the two inputs should be used for connecting the AVR sub out, but if yours does not, you can just use the right input. You can use any RCA interconnect to make this connection.
There are also Y-cables that you can get to go from one output to 2 inputs, but this is not really necessary.