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#416161 - 01/01/16 08:39 AM Re: M3 In-Ceiling Loudspeakers [Re: CV]
Serenity_Now Offline

Registered: 03/28/14
Posts: 1114
Loc: PEI, Canada
Grimani is excellent. smile Glad the vid was helpful.

#416181 - 01/01/16 11:25 PM Re: M3 In-Ceiling Loudspeakers [Re: CV]
newf Offline

Registered: 04/14/05
Posts: 502
After living with 4 in ceiling m3's for a year now and Atmos. I wish I could aim the tweeter. There is no other way to put it. Otherwise they are excellent, well built, easy to install and sound good. But with 8' ceilings, I wish I could aim the tweeter. Looking at how the tweeter is mounted, it would not take much to add a little swivel capability to it.
Dolby Atmos

#416191 - 01/02/16 07:32 PM Re: M3 In-Ceiling Loudspeakers [Re: solarrdadd]
nickbuol Offline

Registered: 09/16/04
Posts: 5006
Loc: Marion, IA
Originally Posted By solarrdadd
Originally Posted By nickbuol
Yeah, Anthony Grimani knows his stuff.

The whole idea of the aimable tweeter came up because there was no hard number on the dispersion of the in-ceiling M3, and elsewhere it mentioned that if you don't have a wide dispersion overhead speaker, that you need to angle the speaker towards the listening area. Well, since that would mean a much more complex M3 housing design to be able to angle the entire speaker (woofer and tweeter) it was mentioned that being able to aim the tweeter (where most of the frequencies that are easily "locatable" to human ears comes from) would be a positive step. Also, if you have lower ceilings, it was determined by others that had done testing on it that if you had a lower that recommended ceiling, you would put the speakers further away (further in front, or behind, and further out to the sides if possible) to allow the speaker to disperse the sound more, but then you would have to be able to point the speaker towards the whole listening area. So you are using speaker aiming-ability to compensate for the lower ceiling by pushing the speakers further away (like if you had a taller ceiling).

So in an ideal situation (correct ceiling height and correct speaker dispersion), you would want the speakers pointing straight down as spec'd by Dolby. It is when you are trying to overcome some limitation that things get a bit "wonky."

On a particular DIY speaker site, a very popular ceiling speaker option for Atmos is an on-ceiling (basically an on-wall speaker) that it's cabinet comes with an angled option (as well as a regular box that they call their "Atmos" box). I don't know what the dispersion is for the coaxial speakers that they use, but they offer both options specifically for Atmos due to demand (their words, not mine).

you mean something like this one coming out from SVS?

Yup... Volt-6 (or Volt-8) from here have the same design.
DIY Sound Group Volt 6 - Angled Flat Pack
2-M60s, VP180, 8-M3s, SVS 20-39PCi, DIY Sub, 8-Shakers, JVC RS45, Anthem MRX-1120

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