Dual XDCPA11BT for Pre-Amp/Line Out Sub Woofer cable 10Pin connector | eBay
Amazon.com: KabelDirekt – 6ft short – RCA/phono Y cable, 1 to 2 RCA/phono, stereo audio cable (coax cable, RCA/phono male/male plugs, analog/digital, adapter for subs/amps/Hi-Fis/home theater/receivers, black) : Electronics
Amazon.com: Ancable RCA to 3.5mm Mono, [ 2-Pack 3-Feet ] RCA Male to 3.5mm 1/8 inch TS Plug Audio Cable for Speakers, Subwoofer, Trigger Cable for Pre-Amp, Soundbar : Electronics
What Is A Subwoofer Y Adapter Cable And Why Use One? - BoomSpeaker
How to Connect Two or More Subwoofers in a Home Theater Setup