Sub Woofer Cable to Mcintosh C220 Preamp


I am trying to hook a sub up to a line level output on my C220 with a standard "single RCA" sub cable. However, I have stereo female L and R RCA's on both the Sub and the Preamp. I tried to use a splitter on each end of the cable, to no avail. I also tried to use the single cable connecting the R female RCA's, no sound. Any ideas. I am new to this.

Thanks
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Showing 1 response by miner42

Also, another silly question: is the output that the sub is hooked up to turned on - the front panel output button should be lit up.