I noticed a new, inexpensive, sealed servo sub option available on Rythmik Audio:
http://www.rythmikaudio.com/L12.htmlI currently have GR Research dual OB servo subs up front. I've been considering an affordable servo sub to place a couple of feet behind my listening chair on the back wall that would provide a little extra "uumph" on music with low bass. I would prefer to buy rather than build which is one of the main reasons for considering this sub.
Just wanted to get some feedback from you guys on whether or not this is a good approach. Thanks.