Scott are you going to try the 5500 sub with only two speakers? any small powered sub will do the same...... like the Roland KCW1 .
http://www.rolandus.com/products/productdetails.aspx?ObjectId=557&ParentId=33 or go for the gusto
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http://www.abluesky.com/p_s_gb/p3s1.html [This message has been edited by Dnj (edited 06-29-2006).]