Need in home subwoofer

im looking to purchase a subwoofer. i have two maudio speakers i bought refurbished, they have good high and mid range sounds, I would like to have more bass output in mysetup.         All I have is a desktop pc, it has a few different sound plugs for a surround sound setup. I'm looking to put the speaker in a small bedroom. Can anyone recommend a brand or model. I would prefer anything 60 dolllars or less. Thanks, daimon.

 

 

Monoprice has a 60w 8 inch sub for 60$, I don't have any experience with it, but monoprice tends to be a good value

http://www.monoprice.com/Product?c_id=109&cp_id=10906&cs_id=1090602&p_id=8248&seq=1&format=2

Definitive Technology super cube and any PSB subs will be very nice.