Originally posted by: YOyoYOhowsDAjello
Originally posted by: Oyeve
Since I have been playing rockband in DD 5.1 I notice many of the songs in the game have the drums coming through the center channel. My system is basically a Denon 3805 receiver, for the fronts I have Infinity Interludes 250, the rears are Infinity Ref 2001.3, the sub is a 250w JBL (kickass sub) and the center is an Infinity Entra Center. The whole speaker system basically kicks ass, but, in RB the drums com in through the center channel in a lot of tunes and the smallish Infinity Entra Center just doesnt give me the thump I am looking for but for everything else its great. I bought it years ago because of the quality and the fact that its not massive. I was thinking of using an extra set of Infinity ref. 2001.3 and bridge them together to make a center but I would rather buy a proper center that has kickass bass. Kinda hard to really test a center channel. So, if any of you guys and gals know of a good basskicking center please pass on the info.

Needs to handle extreme power.
In general you're going to want to keep the front three speakers matched for brand and product line to keep everything timbre matched. I tried looking up the Interludes 250 but couldn't seem to find information on them and if there is a more robust center channel that you can get while still timbre matching them.
How do you have the crossovers set up for your speakers now?
I looked up your Entra center... is it this one?
http://www.amazon.com/Infinity...-Speaker/dp/B00008MWIM
Sounds like you're still trying to keep this a rather compact design?
I have a rather unusual idea... have you thought about keeping the center as is but getting a second smaller sub in the mix that you can locate centrally below your TV or something?
Maybe a little 8" sub or something that you can let handle some of the low end that your center can't do directly. Maybe set the crossover on the center to 40-60Hz and let this smaller sub handle the 40/60Hz to 100/120Hz range (or higher... experiment) while the existing center handles the upper frequencies. If the sub is located centrally below the screen and is just handling the center's bass track, you wont have problems with localization of sounds like would occur with a sub for the whole system getting above the 80-100Hz range and having all bass for the system localized to that area.
I'm mentioning this because I'm not really sure what infinity has in the current product line that will match up sonically to your main speakers.