Muddy sound and buzzing
If you're going to go for a Logitech speaker system spend the extra money for the Z623. I've had them before and they sound great. I had them for about 3 or 4 years before the cable started losing connection to it's circuit board.
The mid was strong and the very low end was nice; Controls were simple and clean; Knobs felt smooth and accurate
The highs and everything inbetween the low and high was muddy sounding except for the direct center of the hertz range; There was also a loud buzzing sound when no sound was being played; Hertz range of 90-120 was too punchy; Clarity quickly fell off at 600hz and higher and stayed at a poor level.