Well, upon further inspection the FH6-LCR is not ported, its a fully sealed box, it seems designed to stay tight and in the high mids to high end range. But if you examine the FH-6T (their formula tower series that the FHR-LCR pairs with) you will quickly notice the larges ports on the front. I guarantee this speaker is not supposed to handle mid bass punch, the towers are. I wouldn't recommend the FH6 center as an "all channel speaker", but as a center its awesome, if paired with the towers or in a 2.1 with a mid bass sub. The 4 DV-62si's i have for rear channels are ported, and they have much better low end extension, than my center, but thats because they're supposed to.
Beware of centers with alot of mid bass punch because they can make make deep male voices overpowering all too often, let your towers or sub handle handle midbass. If you listen to more music than movies, then maybe this setup isn't for you. but in home theater its the better setup.
Personally im bout 60/40 movies/music, but i also have 3 subs which handle the gamete of bass, so im not missing out on any "punch"
note the port: