My 11.4.12 "Franken-Atmos" living room. - Page 31 - AVS Forum | Home Theater Discussions And Reviews
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post #901 of 907 Old 10-18-2019, 03:01 AM
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Quote:
Originally Posted by Nalleh View Post
That is correct, and the clearest example was as i mentioned the guitars in Bailando: clearly in the 'pure surrounds', but not at all in the 'surround wides' (and of course not in the 'pure wides' either).
Nalleh, do you remember if at that time we checked whether the guitars that could be heard in the surrounds of the 5.1.4+wides config were actually object sounds, and NOT coming from rear surrounds bed channels folded into the surrounds of the 5.1.4 config?

Edit: OK, I did some test myself with this clip. First of all, those guitars are indeed exclusively positioned to the sides, there are no guitars in the rears with a 7.x.x config nor in the wides with a 9.x.x config. But the thing is that I hear the opposite of what you have reported. If I switch from 9.1.4 to 5.1.4+wides (so cutting out the rears), the guitars are now also heard through the wides. So this clip does IMO not provide us with evidence that the part that is arrayed to the wides (in a 5.1.4+wides config) only contains bed channel info and not objects. Maybe the Atmos decoder can in the end ONLY copy the whole side surround audio stream, including objects that are not part of the original bed channel, and array it to the wides. PS: Just like Trinnov has recently explained and which I reported on the Atmos and the Altitude thread.

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Last edited by maikeldepotter; 10-18-2019 at 08:16 AM.
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post #902 of 907 Old 10-18-2019, 12:41 PM - Thread Starter
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Quote:
Originally Posted by maikeldepotter View Post
Nalleh, do you remember if at that time we checked whether the guitars that could be heard in the surrounds of the 5.1.4+wides config were actually object sounds, and NOT coming from rear surrounds bed channels folded into the surrounds of the 5.1.4 config?

Edit: OK, I did some test myself with this clip. First of all, those guitars are indeed exclusively positioned to the sides, there are no guitars in the rears with a 7.x.x config nor in the wides with a 9.x.x config. But the thing is that I hear the opposite of what you have reported. If I switch from 9.1.4 to 5.1.4+wides (so cutting out the rears), the guitars are now also heard through the wides. So this clip does IMO not provide us with evidence that the part that is arrayed to the wides (in a 5.1.4+wides config) only contains bed channel info and not objects. Maybe the Atmos decoder can in the end ONLY copy the whole side surround audio stream, including objects that are not part of the original bed channel, and array it to the wides. PS: Just like Trinnov has recently explained and which I reported on the Atmos and the Altitude thread.
Well, first of all this was done a while ago, and second of all i did not include the rears in any of these test. Was too hung up in what the wides were doing i guess, LOL.
But i still remember that there was a big difference in what pur wides, sur wides and pure surrounds did. And if there was guitars in the sur wides, it was incredible faint, and VERY different than from the pure surrounds.

But then again things have happened in the Atmos world since i did this, so maybe this test might behave different with todays gear.
For example the 8500 is handling DTS:X a bit different than my older 7200 does.

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post #903 of 907 Old 11-04-2019, 02:13 PM
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@Nalleh out of curiosity, did you change the weight on your slaps? Wondering what you found to be a good balance on them. I'm putting my boxes together now and it got me thinking. I haven't update my thread yet but here's a sneak preview of one standing on it's end. I need to test it too because I'm not sure if I gave enough clearance for the SLAP when it's going in. I might have to add a 2nd bezel on it get another 3/4" to be safe.
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post #904 of 907 Old 11-04-2019, 04:04 PM - Thread Starter
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Originally Posted by DesertDog View Post
@Nalleh out of curiosity, did you change the weight on your slaps? Wondering what you found to be a good balance on them. I'm putting my boxes together now and it got me thinking. I haven't update my thread yet but here's a sneak preview of one standing on it's end. I need to test it too because I'm not sure if I gave enough clearance for the SLAP when it's going in. I might have to add a 2nd bezel on it get another 3/4" to be safe.
No, i haven’t touched the weight on them! I always planned on just trying them as is, and they worked so good, i just left them as is, LOL.

Also, the manual says no weight allowed if mounted downfiring, so i am already pushing it But stuff that !!

I am considering testing adding some 75gram discs i got a while ago, to see what difference it may do, but again: they work just about perfect as is, and i have to remove boxes, and take out all SLAPS to add weight, so i haven’t bothered yet.

Yeah, it is a good idea to leave them some room to work, i have about 2" clearance under mine.

Tip: your result may vary, but i had a tuff time getting that original rubber gasket to seal properly, so i removed it, and used a adhesive rubber gasket instead. Job done

Your boxes look GREAT, man

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post #905 of 907 Old 11-04-2019, 04:36 PM
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Quote:
Originally Posted by Nalleh View Post
No, i haven’t touched the weight on them! I always planned on just trying them as is, and they worked so good, i just left them as is, LOL.

Also, the manual says no weight allowed if mounted downfiring, so i am already pushing it But stuff that !!

I am considering testing adding some 75gram discs i got a while ago, to see what difference it may do, but again: they work just about perfect as is, and i have to remove boxes, and take out all SLAPS to add weight, so i haven’t bothered yet.

Yeah, it is a good idea to leave them some room to work, i have about 2" clearance under mine.

Tip: your result may vary, but i had a tuff time getting that original rubber gasket to seal properly, so i removed it, and used a adhesive rubber gasket instead. Job done

Your boxes look GREAT, man
Thanks, this rubber gaskets are odd. I haven't checked how good their seal is. After posting I've been doing more work on the trim pieces and the speaker stands I'm building for my rear surrounds. The SLAPs don't have as much clearance as they should. I think they're going to hit the drive at negative xmax. I have an extra sheet of 3/4" and 1/2" baltic birch here so I cut them down to size to make an extra 1.25" bezel to attach. That'll give me a bit more than needed. I totally spaced about the depth they needed when I made the original design.

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post #906 of 907 Old 11-04-2019, 05:04 PM - Thread Starter
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Quote:
Originally Posted by DesertDog View Post
Thanks, this rubber gaskets are odd. I haven't checked how good their seal is. After posting I've been doing more work on the trim pieces and the speaker stands I'm building for my rear surrounds. The SLAPs don't have as much clearance as they should. I think they're going to hit the drive at negative xmax. I have an extra sheet of 3/4" and 1/2" baltic birch here so I cut them down to size to make an extra 1.25" bezel to attach. That'll give me a bit more than needed. I totally spaced about the depth they needed when I made the original design.
Spoiler alert: i actually made the same boo-boo when i mounted mine, so the SLAPS are a bit close to the JBL magnets inside the box on negative Xmax, as you say. However i i think i measured right below 2", so i should be fine. When the JBL’s are at full tilt, the SLAPS are at ~60mm, so there should be clearance
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post #907 of 907 Old 11-05-2019, 12:21 AM - Thread Starter
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Ever so slightly update.

I had the VNF boxes placed on the TR Sleds with them bolted to it( can be seen at top of pic) to avoid them moving around, and also make them more of a "one unit" so all movements got transferred to the seat.

However, i noted creaks and noises from them when they moved, as in playing heavy content. I also noted that if i tried lifting the sleds at the outer rear cornes, it flexed a bit.

So i made a tiny "brace" from scrap pieces between the top of each boxes, thereby linking the boxes both at the bottom AND top. This made a big difference, all noise/creaks was eliminated, there is NO flex when trying to lift outer corner, and it actually made it more efficient at transferring movement to the seat, as now all 3 boxes is litterally all working as one. Job done

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Last edited by Nalleh; 11-05-2019 at 03:48 AM.
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