Home speaker: like to add low frequency sub-woofer
I am in the market of sub-woofer.
Currently I am using 2.1 speaker from logitech and I am not really happy with it.
Is it possible just to add a sub-woofer to get the better bass??
Also there are lots of home theater speaker sets (5.1 + amplifier) from various companies. (samsung, LG, panasonic, sony etc) should I just get one of those?