How to Power Two Speakers with a One Channel Amp: 9 Steps
Amazon.com: High to Low O Converter,Speaker Level Adapter,2 Channel High to Low O Converter Black Car Stereo Subwoofer with Power Amplifier Control Wire High to Low Converter Car O High to Low
How to connect a 2 channel integrated amp to a subwoofer - Quora
How to hook up a subwoofer to a stereo system - CNET