I'm not sure, but I think if you were to hook up the logitech speakers to the amplifier on the sub you would probably blow them. Anyway I was looking at how the speakers were wired and because all the speakers are connected to the sub, there would be no way to hook up your computer speakers to that subwoofer you bought without a chance of blowing the computer speakers. and also I don't see a really good way to hook all 5 speakers up to it without taking away the true surround sound effect. basically If you can, you should return the subwoofer you bought and use the money to either have the subwoofer repaired or to buy a new set of computer speakers.