RCA Y Splitter 20cm Red White Audio Sockets 1 Male to 2 x Female Subwoofer Cable 5060960443038 | eBay
RCA Y Splitter (8 Inch), 1 Male to 2 Female Stereo Audio Cable, Gold Plated Dual RCA Female Adapter for Subwoofer, Car Radio, Amplifier, TV, Digital Audio, 2 Pack | Walmart Canada
Why are there two inputs on my subwoofer? - EarthquakeSound.eu
TNP RCA Splitter 1 Female to 2 Male - 15 cm RCA Y Splitter Cable Adapter for Digital Audio or Subwoofer - (Stereo Female to Two RCA Mono Male): Amazon.co.uk: Electronics & Photo
RCA Stereo to Mono converter where to buy ? | Audio Science Review (ASR) Forum
How To Connect A Subwoofer To An Old Amplifier Or Vintage Receiver