posted on Thu Mar 04, 2010 8:03 pm
Subwoofer "presence" can and regularly is faked by putting a heavy peak around the 60Hz region, which is that same sound that goes through the walls and wakes you up at two in the morning because it is something of a natural resonant frequency for humans and many building materials. A true subwoofer should be capable below 30Hz and will give the kind of punch that you get in a theater, but somewhat more subtly if configured correctly.
Your $300 budget will pick up any home-theater-in-a-box (HTIB) system and they will all be roughly the same quality. If you can expand that budget to around $500 and omit the subwoofer entirely for Phase 1, you could get a decent starter system going with a true component receiver and speakers. Then budget another $200-250 for a proper subwoofer purchase in (say) six months, and you'll end up with a much better system and it should have a much longer service life than your Z5500s.
If you do buy an HTIB system, it will be roughly the same quality as the Z5500s but with a couple extra component functions capable of essentially breaking the entire system with a single failure, and will probably last about as long. But if that's your muse, go for it -- lots of people can and do use them, and since your prior audio expectations were set by the Z5500s, you probably won't be disappointed.
He who laughs last, laughs first next time.