AVS Addicted Member
Join Date: Mar 2009
Location: Grand Rapids, MI
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I tried that a couple of years ago. Windows doesn't output sound correctly if you try to use the subwoofer out on the sound card with 2.1. It only works right if you have 5.1 or 7.1 hooked up. Could be your card is different, though.
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A 2 channel stereo receiver can also work with a sub, although being able to use the bass management in an AVR to set a higher crossover is a plus. With a 2 channel stereo receiver, you either
(a) Split the 2 channel output from your computer and run it to both the receiver and the sub (the sub needs left/right RCA inputs for this).
(b) With a receiver with A/B speaker outputs, run the B speaker outputs to a sub that has speaker level inputs.
(c) Get a sub with RCA inputs and outputs. Run the computer 2 channel output to the sub, then run the RCA output from the sub to the receiver.
Some of these hookup methods above (a, c) also work for just a plain amplifier.
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