I will be replacing my sub (considering both front and bottom firing subs in $150-200 range for primarily movies - don't need to shake the walls down, just some reasonable bass effects, and non-audiophile type music listening) and I'm in a quandary about its placement. I have to keep it in a cabinet of my entertainment center causing it to be enclosed on all 4 sides with a speaker screen opening opposite the sub. Also, if needs be, I can take the sub out of the cabinet and place it in a corner on a tile floor. So my questions are: 1. Can a sub be left in an enclosed cabinet and still do its job? 2. If Yes to #1, does front/bottom firing make any difference? 3. If No to #1, does opening the cabinet door make a beneficial difference? 4. Ideally, I would imagine that taking the sub out of the cabinet is the way to go...but this can get to be a PITA.