Connecting a subwoofer to my PC

[hunter32tz]

So I've got this semi-old JVC subwoofer in my basement. I have a pair of two speakers on my computer right now but I want a little more bass. I will give the model number of the sub soon but I can't at the moment.

The sub has a "subwoofer out" plug, and an AC power cable. It was originally meant for TV theater applications and such, but I want to know if there's any way to hook it up to my computer in conjunction with my speakers. Pretty sure my motherboard only has one external speaker output, so I need a way to wire all this stuff together and make them all connect to this single port.

Any suggestions?

Motherboard: ASUS Z87-A (no sound card)
Current speakers: Logitech X-140

 

[jb6684]

Yeah, just need a cable to connect 3.5mm (mono) plug to most likely single or dual RCA plugs

https/www.asus.com/Motherboards/Z87A/

Then connect subwoofer out on your motherboard.

BIG issue is, changing the volume level. You can use the Mixer in Window 7 or the "input level" on your subwoofer (IF your sub has one) THE pain is, you will have a different volume on your X-140 and the sub. i.e. you have to tweak two (2) volume controls every time

 

[americanaudiophile]

If your mobo has only a single 2 channel audio output you will need to split it and feed your speakers and the sub. One of these:
http/www.amazon.com/Belkin-Adapter-Stereo-Headphone-Splitter/dp/B0047T79M2
and and additional audio cable with stereo mini plug at one end, 2 RCA plugs at the other (you only use one of these - doesn't matter which). You will need to adjust your system volume from the PC as jb6644 says.
If you had a subwoofer out on the mobo it would work better.