A Penta is way to big... a simple Redline 40/60/120 will do the job. The important thing is: the speaker must fit to human voice. Too much bass will destroy the effect... and a standard Penta will not work, you must first remove the bubble wrap foil in it's sound way.

Hey BeoWorlders, just thought I'd share another whacky idea that has been bouncing around in my head over the last few months. I have two systems that utilize Pentas as L and R channels. One set up (bedroom) uses a BL4k as a center channel and the other (living room) is not equipped with a center at all so just running in stereo. The situation is that I use both for a ton of movie and TV watching and want to upgrade the center channels in both systems. After a year of listening to a 3.0 system that had a woefully mismatched and underpowered center speaker, I've been on a mission to scheme up a solution to get away from this. Not only do I want a home theater system to match the power and spectral capability from all three front speakers (L/C/R) but I also want to match the Timbre as much as possible. Center channels are usually heavily compromised from my point of view and we all know that the center channel is where a majority of content comes from. So what have I come up with? Well the concept is pretty simple, build an alternative enclosure so that the Penta transducers can be packaged more efficiently as a center channel speaker. Why redesign the speaker package I hear you say? Why not lay a Penta on its side in front of the telly and call it done?? There are a few reasons. Primarily the need to stand up the center midrange array. Its important to place these midranges vertically so that the array physics appropriately cover the horizontal listening space for various seating areas etc. Secondarily is more of a practical reason - laying a huge Penta on its side in front of the TV is just not going to work from a space perspective. A few minutes of slideware engineering and here we are: Login to view image   Originally I thought I would 3D print it in sections and then assemble. However I suppose it could be made in wood and CNC'd as well. The advantage to 3D printing is that its very easy to do so once the CAD is finished and it could be potentially styled to match the shape of the Penta cabinet in some interesting, abstract way. Basically all the transducers would be a carry over from a donor Penta along with the twee-mid module that could essentially just drop in. This arrangement should also keep from having to redesign the crossover but I'm sure the experts among us would say differently. Let me know what you guys think.