In ceiling Dolby Atmos Speakers - AVS Forum
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Old 08-31-2014, 08:40 PM - Thread Starter
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In ceiling Dolby Atmos Speakers

Hi all,

I am in the market for Dolby Atmos in ceiling speaker. I know Pioneer make Atmos speakers but looking for some advice on these.

Cheers
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Old 08-31-2014, 09:03 PM
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I don't think you need a specific type of speakers for Atmos unless you are going to get those modules that sit on top of regular speakers. I'm going to use a regular pair of in-wall speakers, but I have joists that I can reinforce with MDF and build a box around the speaker, just like you would do with in-wall speakers.

It should be a simple matter of driver-matching with your main speakers and surrounds. All of my speakers have 1" tweeters and 6.5" mids, so I'm choosing the same drivers in a MTM/D'Appolito array.

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Old 08-31-2014, 10:09 PM
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Try to find in-ceiling speakers that have a tilt built in, so they can be mounted forward and rearward of the listening position and still be pointing at the listeners.

Sanjay
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Old 08-31-2014, 10:11 PM - Thread Starter
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Quote:
Originally Posted by sdurani View Post
Try to find in-ceiling speakers that have a tilt built in, so they can be mounted forward and rearward of the listening position and still be pointing at the listeners.
Means I have to buy new ones. Hope we start to see in ceiling Atmos soon..
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Old 08-31-2014, 10:21 PM
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Originally Posted by chuna View Post
Means I have to buy new ones.
I thought you said you were...
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I am in the market for Dolby Atmos in ceiling speaker.
Are you in the market for in-ceiling speakers or do you already own some?
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Hope we start to see in ceiling Atmos soon..
No such thing. You can use any in-ceiling speakers.

Sanjay
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Old 08-31-2014, 10:25 PM - Thread Starter
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Originally Posted by sdurani View Post
I thought you said you were...Are you in the market for in-ceiling speakers or do you already own some? No such thing. You can use any in-ceiling speakers.
I am moving houses. I can either move the new ones to my new place or keep the old ones there and buy new ones. Havent decided yet. The questions what Atmos modules are available now for in ceiling speakers?
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Old 08-31-2014, 10:28 PM
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My understanding is they need to be timber matched. I have episode 500's for sides and rears and plan on using in ceiling. Since theater is aimable.
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Old 08-31-2014, 10:28 PM
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It definitely seems like concentric drivers will be indicated since listeners will likely be in an oblique plane with respect to the sound source.
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Old 08-31-2014, 10:59 PM
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Originally Posted by SyntheticShrimp View Post
It definitely seems like concentric drivers will be indicated since listeners will likely be in an oblique plane with respect to the sound source.
There is a dedicated Dolby Atmos thread. http://www.avsforum.com/forum/showth...3#post27036193

Loads has been discussed also on in ceiling speakers. It would be too much to repeat eveything here so I would just read what has been written there so far and also ask any questions there!
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Old 08-31-2014, 11:24 PM
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I can see how what I posted would look like simple speculation on what dolby would suggest. It isn't. It's a recommendation, based on basic loudspeaker science, that I would be happy to defend to anyone.
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Old 09-01-2014, 12:01 AM
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The questions what Atmos modules are available now for in ceiling speakers?
You keep confusing 2 different things. "Atmos modules" are small upfiring speakers that sit on top of your regular speakers and reflect off the ceiling (virtual heights). There's no such thing as Atmos ceiling speakers. Any in-ceiling speakers will do.

Sanjay
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Old 09-01-2014, 12:14 AM - Thread Starter
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Quote:
Originally Posted by sdurani View Post
You keep confusing 2 different things. "Atmos modules" are small upfiring speakers that sit on top of your regular speakers and reflect off the ceiling (virtual heights). There's no such thing as Atmos ceiling speakers. Any in-ceiling speakers will do.
I realize that but some modules come build into the speaker like the Pioneer ones.
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Old 09-01-2014, 12:20 AM
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I realize that but some modules come build into the speaker like the Pioneer ones.
What does that have to do with in-ceiling speakers? Just to clarify, are you looking for Atmos-enabled upward-firing speakers (like the Pioneer ones) or in-ceiling speakers? You keep bringing up height modules, not sure why.

Sanjay
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Old 09-01-2014, 12:24 AM - Thread Starter
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Sorry my bad, Im looking for these: Atmos-enabled upward-firing speakers. I currently have Krix floor standing speakers all fronts. The surrounds are all in ceiling. Hope that makes sense. I want a 7:1:4 setup.
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Old 09-01-2014, 12:30 AM
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Onkyo and DefTech make some. Atlantic Technology announced some this week:

http://www.atlantictechnology.com/fi...2614-2-lrz.pdf

Might not be worth it if your surrounds are already in-ceiling (no separation from the height speakers).

Sanjay
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Old 09-01-2014, 12:39 AM
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Quote:
Originally Posted by sdurani View Post
Any in-ceiling speakers will do.
Timber matched, 90 degree dispersion I thought were the requirement for Ceiling Atmos speakers.
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Old 09-01-2014, 12:43 AM - Thread Starter
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Is it better to not go with in ceiling speakers in this case? My home theater is being built but havent fully decided what to do with the surrounds in ceiling or not. Seems like may be a bit more complicated?
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Old 09-01-2014, 09:28 AM
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Timber matched, 90 degree dispersion I thought were the requirement for Ceiling Atmos speakers.
There's no such thing as Ceiling Atmos speakers. As for those requirements, haven't seen anything from Dolby nor elsewhere with those specifications. Timbre matching can be done with equalization (like Audyssey) and the amount of dispersion needed depends on how large the seating area is and how far the speakers are.

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Old 09-01-2014, 09:32 AM
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Quote:
Originally Posted by chuna View Post
Is it better to not go with in ceiling speakers in this case? My home theater is being built but havent fully decided what to do with the surrounds in ceiling or not. Seems like may be a bit more complicated?
Surround speakers are for hearing sounds around you. Height speakers are for hearing sounds above you. How are you going to separate sounds around you vs sounds above you when ALL those speakers are in the ceiling?

Sanjay
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Old 09-01-2014, 01:41 PM
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^^
this....people have to think about what they are doing and apply logical common sense

plus confusion on the terminology - "Atmos speakers", "Atmos modules" and "in-ceiling speakers".

the sooner people figure out what each means, the faster people can give meaningful answers

Steve

Last edited by ss9001; 09-01-2014 at 01:45 PM.
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Old 09-01-2014, 02:04 PM
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I'm going to do Atmos in my house which should be built by December1. I decided to go with MertinLogan ml67's on clearance from Amazon through Audio Advisor. They are aimable which helps. I know 180 degree timbre matched is the standard but there is no such thing in my case. Hoping the outcome will be at least acceptable.

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Old 09-01-2014, 04:30 PM
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There's no such thing as Ceiling Atmos speakers.
Okay. Then you need speakers that meet the Dolby requirements in order to be effectively used as Ceiling speakers. As for those requirements, that is what I have gleamed from the Atmos threads here, and I'm sure from a news article from Dolby themselves.
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Old 09-01-2014, 05:45 PM
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Then you need speakers that meet the Dolby requirements in order to be effectively used as Ceiling speakers.
Once you find the overhead locations for your height speakers, you need to stand on a stool under each spot so that your head is right below the ceiling. From there, you'll be able to see how wide your coverage are needs to be. Imagine your eyes are a spot light; how wide a cone do you need in order to light up all the seats?

If you need to cover a love seat, then the bookshelf speakers you mount on the ceiling don't need wide dispersion. If you're trying to cover two rows of four seats, then you'll need really wide dispersion. The dispersion characteristics should be based on actual coverage needed for all the seats in your HT, not some arbitrary number of degrees you saw at an AV forum.
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As for those requirements, that is what I have gleamed from the Atmos threads here, and I'm sure from a news article from Dolby themselves.
Dolby hasn't written any news articles. They're due to release a white paper that talks about Atmos installs, but that hasn't come out yet.

Sanjay
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