Altec Lansing 221 2.1 Speakers

I bought these speakers for an old computer I was planning to only use to play MP3s. I was initially very pleased with their sound reproduction for the price. The drawback I discovered over time was that the sub-woofer sounded poor with songs with a lot of bass. The bass reproduction was poor and inadequate at higher volumes. I was able to adjust for this with my MP3 players equalizer. But the lack of a bass adjustment on the speakers themselves is unfortunate. (I've replaced them with the Harman/Kardon 595 speakers, and they are much better.)