[dizzy]

wrote:

I wouldn't rule out a sub. The purpose of a subwoofer is NOT to
thump out loud rap tunes and shake the neighbors as you drive by...

Well, it CAN be... 8)

it's to fill in the lowest frequencies in the spectrum, and enable your
other speakers to concentrate on what they do best. Set up properly,
the sub would actually put out very little sound - but that little
bit can greatly enrich the quality and realism,

But that little bit can also, when living in a townhouse, greatly
annoy the neighbors. The stronger low frequencies will make more
things shake.