Connecting a Subwoofer to a Receiver with No Subwoofer Output
Q: Is it possible to connect a subwoofer in a Technics AV Receiver Control Receiver SA-GX350? How? It has NO subwoofer output, but has 4 Front (A + B) , 1 Center, 2 Rear speaker output and Dolby Prologic Surround Mode (it is possible to eliminate Center and choose volume for Center and Rear speakers ).
Audioholics: You may connect your subwoofer speaker level to your Receivers Speaker A output.
To do this, run a pair of speaker wires in parallel for each connection. One pair for the left main and left sub speaker level input, and one pair for the right front and right sub speaker level inputs.
DO NOT USE Speaker B on your Technics Receiver as the connection is hooked in series and will degrade sound.
Editorial Note about Speaker A and Speaker B Outputs:
However for those using a receiver that has the Speaker A and Speaker B wired in parallel, you can use Speaker B to connect your subwoofer so you don't have to splice two pairs of wires to each speaker level output of the Speaker A connection. To test if your receiver has parallel Speaker A + B outputs, simply connect your speakers to Speaker A with NOTHING connected to the Speaker B outputs. Play some music through your speakers. Now turn on Speaker B outputs. If you don't hear the sound drop off, then your receiver has parallel connections between A and B. In this case, use the Speaker B outputs to connect your subwoofer.
For more info, read the following FAQs and articles:
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