Fortress Of Amplitude - Page 17 - AVS Forum | Home Theater Discussions And Reviews
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post #481 of 658 Old 02-24-2019, 02:55 PM - Thread Starter
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Before..



After..



The screen mount has been bumped out an inch to accommodate the new speakers. It is a surprise that the HTM-12s integrate more cohesively as one sound stage than the Uni-Q KEFs.


The Volt 6s are a definite upgrade for rear surrounds.



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post #482 of 658 Old 02-28-2019, 09:55 AM - Thread Starter
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Last pieces to the DIYSG upgrade puzzle are the Atmos speakers. I have started a build thread for them in the DIY Speakers section: https://www.avsforum.com/forum/155-d...mos-build.html


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post #483 of 658 Old 03-03-2019, 11:34 AM - Thread Starter
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The baffles have some progress. They could almost pass for Sci-fi movie prop components in build.

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post #484 of 658 Old 03-05-2019, 12:26 PM
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I seen on another thread you were going to use carpet glue with drywall between your joist. Did you do it and if so how did it work? I was thinking of doing this maybe.

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post #485 of 658 Old 03-05-2019, 01:02 PM - Thread Starter
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Quote:
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I seen on another thread you were going to use carpet glue with drywall between your joist. Did you do it and if so how did it work? I was thinking of doing this maybe.
I used a combination of carpet glue and green glue. It works great. If green glue is out of the budget I would definitely use carpet glue as a substitute. Here is the post: https://www.avsforum.com/forum/19-de...l#post55371464

This too: https://www.avsforum.com/forum/19-de...l#post55444490
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post #486 of 658 Old 03-05-2019, 01:23 PM
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I used a combination of carpet glue and green glue. It works great. If green glue is out of the budget I would definitely use carpet glue as a substitute. Here is the post: https://www.avsforum.com/forum/19-de...l#post55371464

This too: https://www.avsforum.com/forum/19-de...l#post55444490
Now I remember this. So you used the carpet glue for the first layer and the green glue for the second it looks like. If I do it I will probably cut my section in 4' instead of 8' to make it easier to handle. I have a few nails in my sub floor from the hard woods above. So you troweled the carpet glue on the drywall? Did you extend the drywall beyond your walls or right at the edge?

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post #487 of 658 Old 03-06-2019, 04:18 AM - Thread Starter
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Originally Posted by Ladeback View Post
Now I remember this. So you used the carpet glue for the first layer and the green glue for the second it looks like. If I do it I will probably cut my section in 4' instead of 8' to make it easier to handle. I have a few nails in my sub floor from the hard woods above. So you troweled the carpet glue on the drywall? Did you extend the drywall beyond your walls or right at the edge?
I treated only the subfloor that was above the theater space. I hammered the nails as flat as I could.
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post #488 of 658 Old 03-07-2019, 03:03 PM - Thread Starter
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Look what the cat brought in!

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post #489 of 658 Old 03-07-2019, 06:56 PM - Thread Starter
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But wait, there's more! The remaining two Volts for Atmos check in at the last moment.




The frames for the Atmos baffles are now in place

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post #490 of 658 Old 03-08-2019, 06:25 AM
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Are you going to paint the front of the volts the same color as the ceiling? That's quite the box for the Volts.

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post #491 of 658 Old 03-08-2019, 07:44 AM - Thread Starter
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Are you going to paint the front of the volts the same color as the ceiling? That's quite the box for the Volts.
Thanks. The baffles will be painted a dark color and hidden behind grills.
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post #492 of 658 Old 03-08-2019, 07:14 PM - Thread Starter
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Assembling the crossovers for install day tomorrow.

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post #493 of 658 Old 03-09-2019, 12:54 PM - Thread Starter
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Stealth Atmos speakers to join the stealth soffit.



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post #494 of 658 Old 03-17-2019, 12:40 PM - Thread Starter
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Got round to a project I've been meaning to tackle for a while:

A cabinet built of 1x8 poplar. Very solid with the Kreg system.




Cross hatched lattice for the rear panel. I sliced it with a table saw.




The lattice sandwiched between two panels of linacoustic, glued together with 3M-77.




The panel fully wrapped in a flannel material, spray glued as well. I'm thinking green today




Screwed lightly to the back with 1-5/8 drywall screws so as not to compress the panel.



Trimmed and installed into the window. The egress window does not let sound out so there was no need to design the plug for sound blocking. The beer steins are for diffusion. They will be stuffed with old socks filled with rockwool so that they don't create any resonances. The heavy lifting is done by the large burlap covered acoustic panel so this plug is mostly decorative.




No need to put steins where they won't be seen.

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post #495 of 658 Old 03-17-2019, 01:02 PM
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Great work! Looks good. I still need to pick up a kreg pocket system...


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post #496 of 658 Old 03-26-2019, 03:58 PM - Thread Starter
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Back to magnets for the Atmos grills since the bungee cords could not be used this time round. Further detail in the build thread: https://www.avsforum.com/forum/155-d...l#post57808488


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post #497 of 658 Old 04-01-2019, 05:49 PM - Thread Starter
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I've been meaning to cobble together a quick and easy diffuser to place behind the sofa. Not the ideal treatment for the spot but, as one expert noted, it is better than having nothing.

The idea was to use halves of tubes of some sort. I considered round fence posts, bamboo halves, sch.40 pipes, etc. Over Christmas, while on my daily trip to the hardware store I came across these birch firewood bundles that looked regularly shaped and varied in diameter. Perfect!




Well, I tried sawing them in half but they defeated all my tools, so I gave up.

Forward a few months and I took another stab at them. This time I persisted. I got through the pile using a table saw, lots of care and patience, and regular trips to the electrical panel to reset the breaker. The piece of OSB is screwed to the firewood.






The panel is 3ft by 5ft 3/8ths MDF on a poplar frame. The finished panel was quite heavy, about 50lbs so I had to employ a super french cleat, similar to my screen. This awesome stud finder was able to pinpoint studs through two layers of drywall and green glue.

*Edit: The birch halves are secured by screws driven from the back, in addition to the wood glue.






The diffuser is just another reason to delay getting down and dirty with REW, in order to carry out some real analysis of the room. Guess I am now out of excuses.

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post #498 of 658 Old 04-02-2019, 04:22 AM - Thread Starter
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Looks like some of the pics disappeared overnight. They are updated.
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post #499 of 658 Old 04-02-2019, 05:03 AM
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I don't know about anyone else, but you sure did impreza me! Great job, bro!
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post #500 of 658 Old 04-02-2019, 05:11 AM
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Quote:
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birch firewood bundles that looked regularly shaped and varied in diameter. Perfect!

Too good!
You prove that HT building is an art and not just science...those angled Atmos and this!
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post #501 of 658 Old 04-02-2019, 05:51 AM - Thread Starter
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I don't know about anyone else, but you sure did impreza me! Great job, bro!
Lol, thanks!

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Too good!
You prove that HT building is an art and not just science...those angled Atmos and this!
Thanks bubbrik, you are too kind! I'm trying to keep up with the @dkersten s
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post #502 of 658 Old 04-24-2019, 09:52 AM - Thread Starter
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"Project X" has commenced..


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post #503 of 658 Old 04-24-2019, 03:31 PM - Thread Starter
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post #504 of 658 Old 04-24-2019, 06:34 PM - Thread Starter
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post #505 of 658 Old 04-26-2019, 01:55 PM - Thread Starter
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This pic gives the game away

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post #506 of 658 Old 04-26-2019, 02:12 PM
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I’m just impressed by what you come up with - the vision and then making it happen. Is this something to do with HVAC?
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post #507 of 658 Old 04-26-2019, 03:00 PM - Thread Starter
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I’m just impressed by what you come up with - the vision and then making it happen. Is this something to do with HVAC?
Thanks, I am humbled.. My ego is now the size of a freight train! Yes, these are dead vent modules. As spring stretches itself out humidity is starting to make its presence felt. I need to get the dehumidification sorted out. The room gets stuffy with little air movement, so that needs to be rectified too.
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post #508 of 658 Old 04-29-2019, 05:51 PM - Thread Starter
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Jon Snow had a lot on his mind as the night approached, but I doubt it was as heavy as configuring a HVAC solution for the HT. Fresh air supply and dehumidification are the priority.

An ERV was the plan for fresh air supply but I've come to the conclusion that its cons are just not worth it. Ideally air should be tapped from the conditioned main floor. Unfortunately there is no good way to do so. The game plan is to exchange air with the rest of the basement outside the HT.

The slots are for filters as shown in the pic below. The purpose for having a filter in the dead vent is so that the one inside the dehumidifier unit can be omitted. The custom sized dehumidifier filter is an extortion racket! I bought a return filter grill to use inside the dead vent but it would have heavily complicated the design, so it was switched for the slot. Only one slot will be used. The second one is a contingency in case the flow design needs to change.






This is a rough sketch of the dehumidification and fresh air supply design. I'm totally winging it. The parts labelled "D" are dampers. The dehumidifier circulates air so it does not cause a pressure change. The air pumped in by the supply fan needs to exit somewhere, so there is a damper on the return dead vent to expel the excess. Please tell me where this design is going to fall apart.





Some of the parts are in, including the return filter grill that can now be re-purposed.

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post #509 of 658 Old 04-30-2019, 09:10 AM
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Why do you need the dehumidifier on the return side of the the line to feed back in to the supply? Could the Dehumidifier be on the supply side? Also, if this is in the basement anyways, would the dehumidifier be better served just working in the entire basement? Then your supply would already have the conditioned air.
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post #510 of 658 Old 04-30-2019, 09:49 AM - Thread Starter
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Why do you need the dehumidifier on the return side of the the line to feed back in to the supply? Could the Dehumidifier be on the supply side? Also, if this is in the basement anyways, would the dehumidifier be better served just working in the entire basement? Then your supply would already have the conditioned air.
Thanks for the suggestion. If I put the dehumidifier on the supply side, it would create suction in the run of flex duct, which I am not sure is a good thing as it may cause restriction or collapse. To reduce suction on the flex duct, it would also mean having to use the dehumidifier's inboard filter, which is costly. That would also mean that dusty air will be running through the ducting before it reaches the dehumidifier. The rest of the basement is a larger utility area that is not well sealed, so I don't want to have to condition it. The main goal of the theater was to create an enclosed area that would be easier to condition.
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