If you haven't purchased a sub yet, what I gathered from talking to Mike/owner of ACI, is their 'Force' sub, $750 is the same sound quality as the Titan II with lower output. I was willing to spend on the Titan, but Mike suggested the 'Force' for my lower output needs. I'll be using the sub mostly for music and the occasional movie.
Side note. I've never known of a more customer friendly company.
Side note. I've never known of a more customer friendly company.