DIYSG Atmos option/idea - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 14 Old 10-22-2019, 09:29 AM - Thread Starter
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DIYSG Atmos option/idea

Has anyone ever tried a setup like this for Atmos?



Since DIYSG doesn't seem to make an Atmos speaker like this, does anyone know of another manufacturer?
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post #2 of 14 Old 10-22-2019, 09:57 AM - Thread Starter
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If no DIY company makes them, I'm considering these from Klipsch. Anyone have experience with these?

https://www.klipsch.com/products/rp-...rround-speaker

https://www.klipsch.com/products/r-4...-atmos-speaker
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post #3 of 14 Old 10-22-2019, 10:44 AM
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Why can't you use the Cobalt for Atmos like the picture you posted?

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post #4 of 14 Old 10-22-2019, 10:53 AM - Thread Starter
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Quote:
Originally Posted by Erich H View Post
Why can't you use the Cobalt for Atmos like the picture you posted?
I worded that poorly. I am absolutely considering using the Cobalts for this purpose. First I was wondering if anyone had ever tried it and their review of it. Second, this would only work (size wise) if you have the 1099s or 1299s. My current mains have a rounded top so they can't be put on them. I eventually would like to get the 893s if they come back and they might not be wide enough.
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post #5 of 14 Old 10-22-2019, 11:07 AM
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I actually thought about this with the Volt-8. But I have a low ceiling and a soffit above my TV so I wrote it off as not working well. So I offer no value with my comment, but wanted to post that it definitely looks cool mocked up and I bet it works very well.
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post #6 of 14 Old 10-22-2019, 11:12 AM
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Is using the angled speaker as a height channel at the sides or front/back of the room an option?
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post #7 of 14 Old 10-22-2019, 11:39 AM - Thread Starter
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Quote:
Originally Posted by Zarkoff500 View Post
Is using the angled speaker as a height channel at the sides or front/back of the room an option?
Anything is an option really. Here is my room. I really didn't want to do in-ceiling speakers. The room is 8 foot ceilings.

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post #8 of 14 Old 10-22-2019, 12:18 PM
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Anything is an option really. Here is my room. I really didn't want to do in-ceiling speakers.
I was thinking angled on wall mounted high. There was a recent audioholics video on youtube where they talked about how angled on wall may be more immersive/realistic vs in ceiling. https://youtu.be/pOI0T15d4RY
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post #9 of 14 Old 10-24-2019, 12:28 AM
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I'm not trying to be debbie downer, but here are some issues I see with what you're looking at doing:

1. Upfiring Atmos speakers are supposed to have a HRTF (Head Related Transfer Function) included in the xover (license fee to Dolby). Generic speakers and certainly DIYSG speakers will lack this
2. Upfiring Atmos generally needs to be carefully constructed of drivers that are only reproducing audio in region where they are "beaming" and are not reproducing sounds below that region of their response. This constrains sounds so you don't hear the direct sound and instead hear only what is reflected. Note that this is the exact opposite of what a good speaker (According to Toole etc) where it should have an even response over the entire listening area so very unlikely that a random speaker will possess those attributes
3. Upfiring Atmos generally have some absorption to kill any direct radiated sound to the listener, you would have to add that to the DIYSG speakers.

on top of all of that, I have heard theaters that have both the "Atmos" module, atmos speakers positioned onwall above the normal L/R and surrounds, as well as my theater has ceiling mounted (volt 6 in atmos format). I can tell you that I always think the modules sound terrible, don't care how expensive or compliant to the design. I find the effect to be weak and not convincing. The wall mounted setup is better, however you will need a REALLY tall room and to drop your side/rear surrounds really low to get enough separation of bed VS height channels.

When designing my theater using CAD, I figured out that getting a ceiling speaker with the proper dispersion pattern to cover your seating can be tough, Coax was the only viable solution for my ceiling mount atmos. I am 100% DIYSG and I love their products, but Atmos modules are possibly a poor (mis)use of their product.

TL;DR: Do ceiling speakers, potentially Coax, potentially sold by DIYSG
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post #10 of 14 Old 10-24-2019, 04:08 AM
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Build these, they worked really well.

https://www.avsforum.com/forum/155-d...i-modules.html

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post #11 of 14 Old 10-24-2019, 06:52 AM
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Originally Posted by Javs View Post
Build these, they worked really well.

https://www.avsforum.com/forum/155-d...i-modules.html
I haven't heard those or the triads. Based on technical specs those are the only modules I've seen that have a prayer of working properly.

Nice design, nice build. Still won't have the HRTF but I've always been suspicious about the use of HRTF applied across multiple people anyway. Seems like it would need to be tuned to the particular individuals anatomy to work properly but this is a complex topic and I'm an armchair quarterback here.

I would say most of my above comments would not apply to these.
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post #12 of 14 Old 10-24-2019, 10:18 AM
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Earlier in the year,I found a great deal on the Klipsch 500SA's from Frys.I tried them out on top of my 893's.
They were an OK addition,but I didn't think they were worth keeping.Not sure about the bounce effect off the ceiling.

I had thought of trying what you're thinking of.Thought I'd try the Klipsch idea first.

When I'm ready for Atmos,I'll go with one of the more standard locations.
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post #13 of 14 Old 10-24-2019, 10:43 AM - Thread Starter
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Quote:
Originally Posted by mindedc View Post
I'm not trying to be debbie downer, but here are some issues I see with what you're looking at doing:

1. Upfiring Atmos speakers are supposed to have a HRTF (Head Related Transfer Function) included in the xover (license fee to Dolby). Generic speakers and certainly DIYSG speakers will lack this
2. Upfiring Atmos generally needs to be carefully constructed of drivers that are only reproducing audio in region where they are "beaming" and are not reproducing sounds below that region of their response. This constrains sounds so you don't hear the direct sound and instead hear only what is reflected. Note that this is the exact opposite of what a good speaker (According to Toole etc) where it should have an even response over the entire listening area so very unlikely that a random speaker will possess those attributes
3. Upfiring Atmos generally have some absorption to kill any direct radiated sound to the listener, you would have to add that to the DIYSG speakers.

on top of all of that, I have heard theaters that have both the "Atmos" module, atmos speakers positioned onwall above the normal L/R and surrounds, as well as my theater has ceiling mounted (volt 6 in atmos format). I can tell you that I always think the modules sound terrible, don't care how expensive or compliant to the design. I find the effect to be weak and not convincing. The wall mounted setup is better, however you will need a REALLY tall room and to drop your side/rear surrounds really low to get enough separation of bed VS height channels.

When designing my theater using CAD, I figured out that getting a ceiling speaker with the proper dispersion pattern to cover your seating can be tough, Coax was the only viable solution for my ceiling mount atmos. I am 100% DIYSG and I love their products, but Atmos modules are possibly a poor (mis)use of their product.

TL;DR: Do ceiling speakers, potentially Coax, potentially sold by DIYSG
Thank you for this. This is exactly the kind of info I was after.
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post #14 of 14 Old 10-27-2019, 06:11 AM
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I would say get a volt6 and build a 45 degree angled box then mount that to your ceiling. The bounce atmos stuff doesnt work as well as on ceiling.

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