Add powered subwoofer as second subwoofer to existing PC / Logitech Z906 setup?

[King Mustard]

My setup:

• ASRock B550M Pro4 motherboard (manual)
• Logitech Surround Sound Speakers Z906 (manual)
• Wharfedale Diamond SW-150 powered subwoofer (manual)

The SW-150 is sitting in storage doing nothing, so I was hoping I could add it as a second subwoofer to my PC.

The Logitech system takes up all three of the audio jacks on the motherboard, so I don't think I'll be able to add the SW-150 without getting a soundcard with more jacks but assuming I did do that, do you think it's possible to have the Z906 and SW-150 working simultaneously?

 

[lovinthehd]

What connectors from the three 1/8" outputs on the computer are you using? You have separate rca at the other end of each cable for each channel? Then you could split the subwoofer rca cable to be input between your Logitech and Wharefedale subs....