Its not a problem to add a sub to the 3.2, although I would not recommend the Kharma sub unless you like your bass to oooze.
Kharma's a very flexible and easy to use with a sub and I disagree with all the advice you have received so far about your speakers. Its a ported two way speaker, there are any number of subwoofers that would be compatible. The Accuton 6" benefits greatly from the help of a subwoofer.
E-mail me if you're interested in how to do this because I don't wish to debate this issue with others who already have stated alternative experience. I've done it many times, with outstanding results. There are much more difficult speakers to add a sub too than the 3.2's.
Kharma's a very flexible and easy to use with a sub and I disagree with all the advice you have received so far about your speakers. Its a ported two way speaker, there are any number of subwoofers that would be compatible. The Accuton 6" benefits greatly from the help of a subwoofer.
E-mail me if you're interested in how to do this because I don't wish to debate this issue with others who already have stated alternative experience. I've done it many times, with outstanding results. There are much more difficult speakers to add a sub too than the 3.2's.