I would have LOVED to do a horn throw back like the JBL console……but there’s the depth constraint because the TV needs to lower behind and the overall allowance was a footprint of 75” x 18” of which 6” of depth is consumed by the TV and the lift mechanism
Unfortunately when the screen is lowered into the cabinet, that’s the max height of the system overall which is 34”……..the fact that the existing towers are taller I think has sparked this whole change order! LolHe wanted a dipole/OB. And I'm not sure the CBT would work, it usually needs the floor for the reflect image and 4" depth is likely not enough for a CBT.
I like the idea of a CBT standing beside that monolythic block instead of the old speakers, that could be an interesting design aspect with benefits regarding the acoustics as well as the design.
So if these will really play to 600hz IF I use four of them in a vertical array, I MAY have a shot here at a hybrid OB solution. I can add a vertical row of 8 3” neo woofers in a sealed section which will get me down to 80-90hz or so.
https://www.parts-express.com/GRS-PT6816-8-8-Planar-Slim-Tweeter-8-Ohm-272-128?quantity=1
I will wind up with an overall dimension of 5.75” x 32” which just fits and I get my OB pattern down through the midrange at least.
If you are going that route, why not use small SLOB arrays above and below the Neo Planers. You can get away with cheaper drivers that have high-ish Q and maybe not great 2nd order distortion. 90-100 Hz is doable open baffle with this configuration.
May I ask a really, really dumb question -- I've never had a HT/AV system! -- are well-localized soundstage and stereo-depth beyond the screen bad things to be avoided? They can't possibly match the content.
For "generalized" audio I just up-fire mono or stereo omni with HF enhanced; image floats midair well above and beyond the speakers (which must be phase-coherent). For "ultra-fi" I've been doing "LX" open-baffle/ultra-compact midtweeter over up-firing midwoofer, again image floats above; and wide directivity a bonus. (Pics in fullrange forum gallery.)
For "generalized" audio I just up-fire mono or stereo omni with HF enhanced; image floats midair well above and beyond the speakers (which must be phase-coherent). For "ultra-fi" I've been doing "LX" open-baffle/ultra-compact midtweeter over up-firing midwoofer, again image floats above; and wide directivity a bonus. (Pics in fullrange forum gallery.)
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I do that often with surrounds in 5.1 when there’s no distance behind the seating and it works very well…..combined with .2 Atmos in ceilings when possible, the crossfire between the upfiring and downfiring is eerily convincing and the best I’ve heard yet compared to side and rear surrounds fired at the listener
As for dipole front content, this should work well as the center channel which carries most of the location info and dialogue is monopole. Left and Right content is often mixed with a stereo bus and processed for depth and height. For music, if I can pull this off?…….should sound fantastic. Depends on what GRS has on paper compared to the reality. I’m counting on 4 of em to spread the load
As for dipole front content, this should work well as the center channel which carries most of the location info and dialogue is monopole. Left and Right content is often mixed with a stereo bus and processed for depth and height. For music, if I can pull this off?…….should sound fantastic. Depends on what GRS has on paper compared to the reality. I’m counting on 4 of em to spread the load
Faital 3FE is a consideration. Hivi I think with the huge shielded magnet would be troublesome OB, no? The Faital neo with the tiny magnet even better but starting to get pricey.I recommend the HiVi M3N, or maybe a Faital....
No room……Screen is 32” tall……that’s as tall as these can be to move with the screen into the cabinet.If you are going that route, why not use small SLOB arrays above and below the Neo Planers. You can get away with cheaper drivers that have high-ish Q and maybe not great 2nd order distortion. 90-100 Hz is doable open baffle with this configuration.
Interesting crossfire, I'll have to try it.I do that often with surrounds in 5.1 when there’s no distance behind the seating and it works very well…..combined with .2 Atmos in ceilings when possible, the crossfire between the upfiring and downfiring is eerily convincing and the best I’ve heard yet compared to side and rear surrounds fired at the listener
As for dipole front content, this should work well as the center channel which carries most of the location info and dialogue is monopole. Left and Right content is often mixed with a stereo bus and processed for depth and height. For music, if I can pull this off?…….should sound fantastic. Depends on what GRS has on paper compared to the reality. I’m counting on 4 of em to spread the load
Example for the console, omni Mark Audio Alpair 10.3 (7-14khz plateau) stationary inset cabinet top; if LX, fixed Alpair 5.3/7.3 (array or something more sensitive/efficient). Or the coax for either duty possibly even both.
Why not? If the client changed their mind, this becomes a change order. So bill them for the work performed to date and draw up a new quote for the new system. Once they see the cost of the change they might decide that those tower speakers weren't so objectionable after all... Or if they have money you at least get paid for the work performed.I REALLY don’t want to go back to square one with this
Alternatively, how about turning the two sub cabs into a 2/3-way speaker? Maybe with a port on the front. Or maybe with some trickery in the XO to get the response you want.
Tom
What about 4 of these guys oriented vertically?………this just might be the solution!!
https://www.parts-express.com/Dayto...ore-Neodymium-Woofer-4-Ohm-295-248?quantity=1
The Dayton linear motor drivers are appealing, but they are expensive for the amount of total displacement. These I think are a better choice. the are on special right now. They look good to 6 kHz so you could use a smaller planner, I have not see FR for the back, but it has a very open frame., so it has a high probability of good rear wave. DMA105-4
Can’t fit those with a planar side by side in an array…..would have to do an MMTMM …..given seated ear height would more likely have to be top to bottom an MMMTM
That would be the plan with these…..4 in a vertical line with four planars in line to the sidegoes from 40 - 2000 Hz. you still need tweeter(s)
Ok so issue resolved…….I’m going to use the KEF Q150 drivers on either side open baffle in WWC configuration crossed to two 5.25 woofers at 400hz. The woofers will be sealed. Since there’s room up top, I’m going to add a full range driver as a Front Height channel.
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