Amazon.com: RCA 1 Male to 2 Female Audio Speaker Y Adapter Splitter Cable with OFC Conductor Dual Shielding Gold Plated Metal Shell Flexible PVC Jacket - 2 Pack / 0.6FT : Electronics
RCA Y Adapter Cable Splitter (6 Inch) - RCAF to Dual RCA Y-Cable 1-Female to 2-Male Connector Wire Cord Plug Jack for Digital Audio or Subwoofer - (Stereo Female to Two RCA
Amazon.com: ANNNWZZD 6FT RCA Y-Adapter Splitter Cable, 1 Male RCA to 2 Male RCA Subwoofer Audio Cable : Electronics
Amazon.com: Mediabridge™ Ultra Series RCA Y-Adapter (15 Feet) - 1-Male to 2-Male for Digital Audio or Subwoofer - Dual Shielded with RCA to RCA Gold-Plated Connectors - Black - (Part# CYA-1M2M-15B) :
10 Pin Universal RCA Output Wire Harness Aux in Subwoofer Cable Adapter Wiring Connector Android Radio Car Accessories|Cables, Adapters & Sockets| - AliExpress
Amazon.com: Amazon Basics 3.5mm Aux to 2 RCA Adapter Audio Cable for Stereo Speaker or Subwoofer with Gold-Plated Plugs, 4 Foot, Black : Electronics
to 2 Subwoofer Cable Y Adapter Splitter for Headph - Walmart.com
Amazon.com: Poyiccot RCA Splitter Male to Male Cable, RCA Y Splitter 1 RCA Male to 2 RCA Male Stereo Audio Subwoofer Cable, 2RCA to 1RCA Bi-Directional RCA Y Adapter Cable - 25cm/10inch :
The Five Cs of Subwoofer Setup | Wirecutter
SVS SoundPath Subwoofer cable
Amazon.com: 2 Pack RCA Splitter 1 Male 2 Female, RCA (M) to 2 RCA (F) Stereo Audio Y Adapter Subwoofer Cable (Silver) 1 Male to 2 Female Y Splitter Connectors Extension Cord
HIFI 0.5m,1m,1.5m,2m,3m,5m RCA Y Adapter Cable Subwoofer Y Cable 1x Cinch to 2x Cinch audio cable 1 rca to 2 rca Power amplifier| | - AliExpress
QSC KS212C Powered PA Subwoofer CABLE KIT | KraftMusic.com
10 Pin Universal RCA Output Wire Harness Aux in Subwoofer Cable Adapter Wiring Connector Android Radio Car Accessories|Cables, Adapters & Sockets| - AliExpress
Subwoofer adapter | AV-Connection
Fospower RCA Y-Adapter (3 feet) 1 RCA Male to 2 RCA Male Audio Y Adapter Subwoofer Cable - Dual Shielded, 24k Gold Plated - Walmart.com
RCA/phono Y cable, 1 to 2 RCA/phono, stereo coax audio cable - KabelDirekt
EMK AUX 3.5mm to 2RCA Audio Cable 2RCA for phone in Subwoofer Speaker Cable 5ft | eBay