I just recieved my set Altec Lansing ACS 48's after about three days.  I just have to say first off that these speakers are totally worth the money.  Before I bought these speakers, I used a pair of 30 dollar no name  speakers.  I truly did not think that there would be that much of a  difference, but it has become quite obvious that there definitely is.  This  unit provides so much bass that my room shakes with each thump.  Also, the  mid and high range is excellence, since I hear things in songs I never  heard before.