<font color='#000000'>hey guy i think your question was answered back on 12/29 or there abouts in a previous post. anyway the answer to your question can be found in the FAQ on the home page. i'll post here for you.
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).
A: You may connect your subwoofer speaker level to your Receivers Speaker A output.
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 wire 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.
For more info, read the following articles that I wrote.
Crawling for Bass
Subwoofer Connections to Receiver
Equal Power or Not
Enjoy the Music!
GDS
hope this helps</font>