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Official Atmos Home Theater Thread UPDATED With First Impressions

Dolby Atmos

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#61 of 163 OFFLINE   Robert Crawford

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Posted August 24 2014 - 07:16 AM

Four in both scenarios is recommended so you have front to back and 360 degree true overhead or simulated overhead panning. 

Do the floor speakers sit two in front of you and two in back or can all four be in front of you?


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#62 of 163 OFFLINE   DanH1972

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Posted August 24 2014 - 07:25 AM

Do the floor speakers sit two in front of you and two in back or can all four be in front of you?

 

Dolby has shown that the front tops are to be located in front of you, but not directly over the front speakers, the same for the rear tops. 

 

If you're taking about the Dolby Atmos "enabled" speakers (with upward firing modules) then the front left and rights are in the normal 30 degree range and the rear "enabled" speakers are positioned where you would put the rear surrounds in a 7.1 layout (around the 150 degree area).  The side surrounds are "normal" speakers, as always, placed at around the 90 degree mark.

 

Dolby will be releasing an installation white paper around the CEDIA Expo



#63 of 163 OFFLINE   zoetmb

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Posted August 24 2014 - 09:02 PM

 

Somehow I don't see Dolby updating Atmos any sooner. 70mm had few make-overs during the mid '70's and soon one format was settled on that became to be known as 5.1.

 

 

If you're trying to say that after the age of 70mm, digital sound evolved to 5.1, that's correct, but it wasn't the only format, there's also 7.1 and alternative formats such as Auro 11.1 and digital sound on 35mm film also supported Dolby EX and DTS ES which added a matrixed center rear channel (although admittedly, it was hard to notice.) 

 

If you're trying to say that 70mm evolved to 5.1, that's totally incorrect.   70mm originally was six discrete channels: 5 stage channels and 1 surround channel.    In the latter part of the discrete era when budgets tightened up, 70mm films basically used the 4-track mag mix and combined left and center for Left-Center and combined center and right for Right-Center.

 

Dolby recognized this and for the 70mm release of Star Wars in 1977, repurposed channels 2 and 4 to be low-frequency effects channels only and called that format the 70mm "Baby-Boom" format. 

 

When split-surround came along for Apocalypse Now (in 70mm), mag channels sent low frequencies to the two stage effects channels as it did before, but high frequencies on those same tracks were sent to the now stereo surrounds.  Low frequencies for those surrounds came from mag track 6 and were actually mono.   This was done primarily to achieve more localization for the helicopter flyovers, an effect that Dolby Atmos (in the theatre) excels at. 

 

I don't know what you mean by updating Atmos, but like most formats today, it can be updated by firmware upgrades.   As we know, the initial home receivers are only going to include four extra channels - the four ceiling channels, but other receivers in the future may support up to 24 "ground" channels and 10 ceiling channels.    



#64 of 163 OFFLINE   DanH1972

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Posted August 24 2014 - 09:27 PM

If you're trying to say that after the age of 70mm, digital sound evolved to 5.1, that's correct, but it wasn't the only format, there's also 7.1 and alternative formats such as Auro 11.1 and digital sound on 35mm film also supported Dolby EX and DTS ES which added a matrixed center rear channel (although admittedly, it was hard to notice.) 

 

If you're trying to say that 70mm evolved to 5.1, that's totally incorrect.   70mm originally was six discrete channels: 5 stage channels and 1 surround channel.    In the latter part of the discrete era when budgets tightened up, 70mm films basically used the 4-track mag mix and combined left and center for Left-Center and combined center and right for Right-Center.

 

Dolby recognized this and for the 70mm release of Star Wars in 1977, repurposed channels 2 and 4 to be low-frequency effects channels only and called that format the 70mm "Baby-Boom" format. 

 

When split-surround came along for Apocalypse Now (in 70mm), mag channels sent low frequencies to the two stage effects channels as it did before, but high frequencies on those same tracks were sent to the now stereo surrounds.  Low frequencies for those surrounds came from mag track 6 and were actually mono.   This was done primarily to achieve more localization for the helicopter flyovers, an effect that Dolby Atmos (in the theatre) excels at. 

 

I don't know what you mean by updating Atmos, but like most formats today, it can be updated by firmware upgrades.   As we know, the initial home receivers are only going to include four extra channels - the four ceiling channels, but other receivers in the future may support up to 24 "ground" channels and 10 ceiling channels.    

 

Already happening with Trinnov and other ultra high end pre-amp/processors.  Just be ready for sticker shock.



#65 of 163 OFFLINE   Dr Griffin

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Posted August 25 2014 - 08:20 PM

Already happening with Trinnov and other ultra high end pre-amp/processors.  Just be ready for sticker shock.

 

I'm getting sticker shock at the grocery store, so.....

I was looking at electric theater curtain rods/mechanisms, and was blown out of my chair! $800+! I remember additions/upgrades every 6 months or so 15 years ago, now it take years. :o



#66 of 163 OFFLINE   Jonathan Burk

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Posted August 26 2014 - 12:56 PM

Atmos has been around a couple years and I'd still have to drive 2 1/2 hours to hear it. The theater that has Atmos is not in the major metroplolitan area that's only 30 min away, it's in the middle of nowhere! :angry: The theaters must be in dire financial shape, that hardly any in my area have THX certification anymore, and certainly aren't springing for Atmos!

 

THX in the cinema is almost dead.  There are only 7 THX cinemas in all of Los Angeles (including Orange County and the valley)!

 

http://www.thx.com/c...istance=50&pg=2

 

That doesn't mean there aren't a lot of dang good cinemas out there, but the THX brand is almost totally irrelevant. 

 

Granted, it lost relevance for me the first time I saw a THX-certified VHS tape.  But it looks like everyone else has caught up.



#67 of 163 OFFLINE   Dave Moritz

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Posted August 26 2014 - 06:51 PM

I started questioning the THX home certification for gear when they certified the Kenwood pre pro that came out.  It didn't help after Kenwood at the time did a tour with this pre/pro and after the demo was over and the people had left.  The guy admitted that they where not even using the matching Kenwood power amp, that they where using a commercial grade amp.  I remember hearing that amp before and seeing the THX logo and not even being close to impressed.  I thought to myself wow they will slap THX on anything, rofl.

 

Am patiently waiting for the Atmos home demos to be set up and to see what titles will be coming out on Blu-ray disc.  I may delay a few new releases just in case the come out with a Dolby Atmos release, am tired of double and triple dipping of titles and I am to broke for that. 


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#68 of 163 OFFLINE   skads_187

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Posted August 26 2014 - 07:42 PM

I'm lucky enough to be building a new room and will be able to place 4 ceiling speakers. Although Im only at 8 feet height. Hopefully it will be ok.Thing is I might have jumped the gun to early as I already have purchased 4 ceiling speakers , the front heights I bought are paradigms at a 30 degree angle which I can point towards the seating position, should I be getting ceiling speakers that face down for the fronts? I just figured since they are further away, might be practical to have the sound pointed toward the seating area

#69 of 163 OFFLINE   Dr Griffin

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Posted August 27 2014 - 08:02 AM

THX in the cinema is almost dead.  There are only 7 THX cinemas in all of Los Angeles (including Orange County and the valley)!

 

http://www.thx.com/c...istance=50&pg=2

 

That doesn't mean there aren't a lot of dang good cinemas out there, but the THX brand is almost totally irrelevant. 

 

Granted, it lost relevance for me the first time I saw a THX-certified VHS tape.  But it looks like everyone else has caught up.

 

 

I started questioning the THX home certification for gear when they certified the Kenwood pre pro that came out.  It didn't help after Kenwood at the time did a tour with this pre/pro and after the demo was over and the people had left.  The guy admitted that they where not even using the matching Kenwood power amp, that they where using a commercial grade amp.  I remember hearing that amp before and seeing the THX logo and not even being close to impressed.  I thought to myself wow they will slap THX on anything, rofl.

 

Am patiently waiting for the Atmos home demos to be set up and to see what titles will be coming out on Blu-ray disc.  I may delay a few new releases just in case the come out with a Dolby Atmos release, am tired of double and triple dipping of titles and I am to broke for that. 

 

You can't argue that THX started a revolution in criteria for great sound in the cinema. While now the original people behind the certification have moved on, there is still value in the THX certification. Parasound, which is a fine audio company, still finds the value in the THX certification. I do agree, that there are too many levels of the certification, allowing for some questionable products to be included. The higher tiers are still beyond reproach and a good guideline to follow for building a reference home cinema sound system.

By the way, I am no longer impressed by the sound in many of the multi-plexes today, especially the bass, which is very pedestrian. I saw many films over the years in THX certified theaters and it was way better than what's available now. rofl.



#70 of 163 OFFLINE   Dr Griffin

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Posted August 27 2014 - 08:06 AM

I'm lucky enough to be building a new room and will be able to place 4 ceiling speakers. Although Im only at 8 feet height. Hopefully it will be ok.Thing is I might have jumped the gun to early as I already have purchased 4 ceiling speakers , the front heights I bought are paradigms at a 30 degree angle which I can point towards the seating position, should I be getting ceiling speakers that face down for the fronts? I just figured since they are further away, might be practical to have the sound pointed toward the seating area

 

I'm not too clear on this either, but the Dolby Atmos demo some members attended, had ceiling mounted speakers facing the listening area.



#71 of 163 OFFLINE   skads_187

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Posted August 27 2014 - 10:56 AM

I'm not too clear on this either, but the Dolby Atmos demo some members attended, had ceiling mounted speakers facing the listening area.

thanks were they simply facing or the angled type? 

im assuming all info will be released in Sept?



#72 of 163 OFFLINE   DanH1972

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Posted August 27 2014 - 12:08 PM

thanks were they simply facing or the angled type? 

im assuming all info will be released in Sept?

 

The Dolby Atmos demos for the home had downward facing, wide dispersal monopole on ceiling or in-ceiling speakers.  The key is wider than 90 degrees if possible, otherwise you have to aim them at the MLP. 

 

September is the big roll out of information and white papers.



#73 of 163 OFFLINE   Dr Griffin

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Posted August 27 2014 - 04:32 PM

thanks were they simply facing or the angled type? 

im assuming all info will be released in Sept?

 

There are some photos on the preceding page of this thread.



#74 of 163 OFFLINE   Dave Moritz

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Posted August 27 2014 - 08:53 PM

As soon as 9/14  rolls around I will start calling around to see who has Atmos demos available!


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#75 of 163 OFFLINE   andySu

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Posted August 28 2014 - 04:05 AM

Where can I get those Dolby double D theater seats, that are in the poster? :) Posted Image

I asked cinema seating supplier where I got my seats from, and its called (embossing) and its doable only its extremely expensive. Also there is the Copyright issue you'd need permission.

 

I was recommended upholsterer cover and t-shirt printing shop would be a lot cheaper.    



#76 of 163 OFFLINE   Dave Moritz

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Posted August 31 2014 - 10:13 PM

All I know is that it is going to be interesting if I actually go through with setting up a Dolby Atmos system.  My room has some issues regarding a window taking up a lot of space on one side of the room and a ceiling fan in the middle of the ceiling.  I will have to move my surround speakers from the ceiling mount to a speaker stand and hopefully they will not be to over bearing because on each side they will be close to the listening area.  Then figuring out where I can put the Atmos speakers which I might flush mount into the ceiling.  This is going to be a total pain!  Not going to worry about it till I hear it and make a decision to go Atmos.


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#77 of 163 OFFLINE   Brian McP

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Posted August 31 2014 - 10:43 PM

The Dolby Atmos home setup does sound very exciting, but will probably go for one of those 'theatre in a box' sets to start out with, God only knows when it will roll out here in Australia as there are very few theatres with Atmos speaker setups operating now in September 2014.

 

I don't care what anyone says, I love the THX setup and branding, hope it continues -- in Melbourne the Village Centre in Bourke St had technically some of the best theatres in the country for nearly 20 years, thanks to the THX qualifications and quality control.



#78 of 163 OFFLINE   Dave Moritz

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Posted September 07 2014 - 08:46 PM

Don't know why but I am itching to find out what movies will be coming out encoded in Dolby Atmos?


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#79 of 163 OFFLINE   DanH1972

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Posted September 07 2014 - 08:47 PM

Don't know why but I am itching to find out what movies will be coming out encoded in Dolby Atmos?

 

Tomorrow, my dear sir, tomorrow. 



#80 of 163 OFFLINE   andySu

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Posted September 08 2014 - 02:53 AM

The Dolby Atmos home setup does sound very exciting, but will probably go for one of those 'theatre in a box' sets to start out with, God only knows when it will roll out here in Australia as there are very few theatres with Atmos speaker setups operating now in September 2014.

 

I don't care what anyone says, I love the THX setup and branding, hope it continues -- in Melbourne the Village Centre in Bourke St had technically some of the best theatres in the country for nearly 20 years, thanks to the THX qualifications and quality control.

 

Lucasfilm Ltd THX Sound System monitor 3417, here. I don't rarely use home THX Ultra2 on my Onkyo TH SR-875. The AVR is only used for decoding and video mode switching..

 

THX has stage HF LCR boast so no issues of HF loss behind the screen when I drop a screen down that can't easily be compensated with.

 

alignment phase frequency of processor and amp return feeds can all be checked on with RTA or oscilloscope and other test gear. 

 

x6 cards are fitted inside removed a few from the other THX I have. 

 

8 monitor buttons to check sound system speakers and much more.

 

Got keep your eyes peeled for these on ebay.

 

 

 

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