Center channel for the super Pensil

If Super Pencil 12p:

Mar-Ken12pxwT 0v82 Alpair 12p | 18mm 28-december-2015 | designed & drawn by dld © 2010-15 planet_10 enterprises limited for licenced use only

With a CC bass is not so much an issue, you want mid-range for voice dialogue which I'd guess the Mar-Ken12pxwT will excel at, plus it has good dimensions to fit the bill.
 
There is a Mar-Ken for the A12(p), free of charge on the site but it is not the "T" trapezoid Mar-Ken box I'm referring to.

IIRC, the Mar-Ken12pxwT was supposed to be available at a cost and designed to be a head unit to sit above a trapezoid Mar Ken with two A12PW's for bass duty. I think the design was scrapped in favor of a smaller MA driver for the top which the designer found more to his liking but don't hold me to that. I'd have to do a time consuming search for old post to find talk of it, easier to wait for the designer to chime in or reply to your PM inquiry.

Mar-Ken12pxwT is a trapezoid so it's smaller back panel is 249mm wide and the front is 323mm wide. Sides are 297mm deep front to back. Baffle is 378mm high (top to bottom of cabinet), and the drivers center is 163mm from the top of the baffle.
The driver is very close to center and you wouldn't need to place the box on it's side, trapezoid design isn't suited to sit on its side, all of which will be evident when you see the plans.

It is an interesting monitor cabinet which I could see building for a small room low/watt SET amp when I have enough scrap BB plywood around to complete the project.
I have the plans but am not allowed to pass them along to you without permission from P10.
 
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Given that Joan is coming out i will be providong matching centres for it. One of those will be for A12p. It can also be used with SoperPensil.

It is the “same” box that mp9 suggests but in a centre channel shape. It will be more volume efficient than the trapezoid and much easier to build.

Give me a bit. There could be a small one or a large one? Small one will be the fre eone, the larger part of the planset. For a centre the extra extension is not really required.

dave
 
Thank you Dave, wow! I didn’t expect to see a cut of a new speaker, this is perfect.
I’m in the cutting stage of my Super Pensil build, new saw and unskilled hands, I should have started with cheaper wood☹️. Regardless, I’m excited the build is underway and there is a solution for the center channel.

Brian
 
Thanks mp9, looks like there is a potential solution as noted by Dave. I have a paid plan “ticket”, which I need to exercise at some point.
I chose to build the free super pensil’s first, if I can’t build a box that’s going to be a problem.
A horizontal enclosure is preferable, otherwise I will need to raise the tv, a lot. The above meets that need.
Thank you for your help.