I'm piecing together a HT speaker system. I already have FX surrounds, a CSi center and a PSW250 sub. I'm shopping for a larger sub to hopefully tighten up the bass and eliminate some of the boominess, but my question is about my front channel speakers. I'd like to have all my speakers voice (or timbre) matched, but I find I'm very attached to my Altec-Lansing bookshelfs I'm currently using. They're a few years old (OK maybe close to 10) but they still sound incredible and they have a truly beautiful dark cherry wood finish on their very solid (and heavy) enclosures. I've come across a sale on ebay for a pair of the 6.5" drivers from RTi series speakers and I wondered if I replaced the woofers in my Altecs with these if that would make them sound more voice matched to my CSi center, or would I need to also replace the tweeters to accomplish that? Since the RTi drivers are designed for a ported enclosure would they perform as well or still have the same sound if installed in a sealed enclosure like my Altecs have?