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Amazon.com: Fosi Audio BL20C 320 Watts Bluetooth 5.0 Stereo Audio Receiver Amplifier 2.1 CH Mini Hi-Fi Class D TDA7498E Integrated Amp U-Disk Player for Home Passive Speakers Powered Subwoofer(with Power Supply) :
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HIFI high power passive subwoofer amplifier WS 01/02 home fever bass amplifier 5.1/2.1 system dedicated|Amplifier| - AliExpress
![Question: How to safely connect a passive subwoofer with only speaker wire out to a receiver with no sub output, but A and B speaker inputs : r/diyaudio Question: How to safely connect a passive subwoofer with only speaker wire out to a receiver with no sub output, but A and B speaker inputs : r/diyaudio](https://i.redd.it/jg9efqk5iww71.jpg)