If memory serves me right the KB300 has a Piezo horn(a tweeter with a horn attached to it)and a Black Widow 15" speaker, Very dated technology! You would be better served with a Roland KC-300 for few extra $ Brand New. I should add: PV's are reliable but for the better sound quality the Roland is better IMHO 1. Has stereo inputs 2. If more bass response and power is needed get the KC500.
[This message has been edited by JCkeeys (edited 11-30-2000).]