Well, I purchased a set of Logitech Z2300's from Amazon.com. The first one that I recieved had a subwoofer that lasted for about 10 min., but during those 10 minutes I noticed that the bass was comparable to my logitech z340's. I have since that experience recieved my second set, which is working fine (for now). However, the bass is still on the low side (not even close to my friend's Promedia 2.1's). I was just wondering if all of you guys have this issue where the bass is weak? Btw, I am using a Turtle Beach Santa Cruz Sound Card.