I'm adding a second sub and will be splitting by AVR's sub-out line with a Y-splitter (so I can run one LFE cable to one sub and another LFE cable to a second sub!).
My usual go-to place for wire and cables (monoprice) only sells a very cheap looking RCA 1 Male to 2 Female splitter cable.
BlueJeans Cable does not have a picture of their splitter....
I just found a link to this, at Crutchfield (and, it's about 1/2 the price of the bluejeans cable):
Anyone have any thoughts on where I should turn? I'm looking for a really substantial cable...