Building a center channel to match SRX812Ps

Hello -- I am Seth -- I posted this already in the new members area, but I don't think that's the right area for this -- I have an unconventional home setup (using JBL Pro speakers).

My man lair serves a triple purpose -- gym area, desk area, "theater" area. In the cinema portion, I have two PRX712s (which will eventually be SRX812P) and two SRX828Sps underneath for thumping (and boy, do the thumpers in Dune sound thumperin').

Basically, I'd like opinions on a center channel -- I'm still learning how all of this works -- but, I was hoping to be able to replicate the SRX812Ps. Basically, take the 2432H compression driver and sandwich it between two 2272F 12" drivers. A bigger box to compensate the additional woofer, and bam, massive center channel for my massive LRs. Basically a PRX825 but with 12" drivers on either side. (Don't ask me about side and back surrounds yet -- I have no idea what to try there)

But, yeah, I'll post in the appropriate forum for advice -- but feel free to comment here if you'd like.

(I've also considered going the way of a VTX V style design -- I'm still looking for ideas.)

What I'm hoping my equipment list will be in the end:
-SRX812Ps for LR (currently PRX712s)
-SRX828SPs for front subwoofers (there's not room for them anywhere else to even check if they sound better -- but that's alright -- they sound pretty great so far)
-Denon x3800H (coming tomorrow)
-Some bluray player -- most likely the mid-level Panasonic ($400 pricepoint, whichever that is)
-Sony X90L 65" (will be getting soon)
-Custom center channel to match LR
-Side and back surrounds (eventually)
-Possibly a 24" HS24 subwoofer for below 35hz -- we'll see . . .

Image: And yes, I know r/tvtoohigh or whatever -- the tv mount was here when we bought the house -- haven't moved it, don't know if I'll have space to move it, we'll see.

manlair.jpg
 
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What about one nos. of PRX712 (which will eventually be SRX812P) for the centre channel !!!

I thought about it, but it'd be too tall -- and laying it on its side seems no better.

Edit: Yeah, tested putting one of the PRXs in the middle and it's simply too tall. I'd like the center to be no taller than 14-15" at max.

You call that massive? The 2432H is a decent driver though.

I forget -- I'm in the wild west over here on diyAudio!
 
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Research the horizontal MTM alignment…..that’s a terrible dispersion compromise developed so folks could jam a center or soundbar under a screen. For woofers that wide, you would need a horn and driver capable of crossing over at 800hz. Sitting as close as you are in that pic, even if you could build that, it would NEVER sum in the nearfield.

Get yourself another SRX812p used with a damaged cabinet and harvest the horn and amp. Build that into a box with two 8” woofers side by side BELOW THE HORN. You can use the existing amp. Now you‘ve solved almost all of your issues…..your keeping a timbre match by using the HF section keeping it small enough to fit under your screen yet capable of tearing someone’s head off in the near field as your using them. The 812 is built around a 12” 8ohm woofer so you’ll need to use two woofers of either 4ohm each wired in series or two 16 ohm wired in parallel. The B&C 8ps21 16ohm comes to mind…..great midwoofer…..and given the sensitivity, two in parallel will be very close in SPL to the OE JBL single 12.
 
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