Adult Cave! (but not in a creepy way) 13x16x7.5 ~1800 cubic feet - Page 5 - AVS Forum | Home Theater Discussions And Reviews
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post #121 of 150 Old 10-20-2019, 06:14 AM
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I believe that statement came up in a design seminar, many years ago. Kind of sorry I didn't ask many some more questions about it.
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post #122 of 150 Old 10-20-2019, 08:41 AM - Thread Starter
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I will look into this. 20hz is 56 feet i think, and enough theaters are smaller than that while still appreciating it.

I guess I’m wondering about unpredicted consequences of using the riser in this manner.
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post #123 of 150 Old 10-21-2019, 07:59 PM - Thread Starter
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Scratch Marty’s, I need to find the guy who did this:

... referenced here http://carltonbale.com/ultimate-home...ubwoofer-bass/, which linked back to avs (though I couldn’t find the thread).

Folded tapped horn riser goodness.
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post #124 of 150 Old 10-21-2019, 08:34 PM
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I finally found an electrician who sub-contracted from the primary electrician on the job.

For anybody who didn’t see that update, the primary electrician was not at all interested in tracing wires. Given I live in a 1920’s house that has undergone 3 kitchen renos and one addition, the ceiling was a maze of junction boxes, many of which sent runners that did not even power anything.

My new guy was awesome- he totally got the sound proofing/ backer box idea, and he understood the less access panels, the better.

His wiring has a lot of love. Below is the utility area behind the screen wall, it’s the one place that will not be ddw/gg’d to hat and clips. He made good use of it:



He also moved about 12 junction boxes of varying ages, so the ceiling no longer needs backer boxes for access panels:



Per Big’s advice, he ran a 20amp circuit for the projector that allows me to plug it into an UPS with the main equipment, allowing me to recess a hush box into the old access hatch for a crawl space:


He was able to do this while avoiding my new seating, and my newish progeny:


Oh, and adjustable-depth outlet boxes encased in 3/4 mdf, for the win:


Now i’m just waiting for the damn primary electrician to sign off in it so i can have the rough inspection done. Waiting is hard. Hence, side-project: garage bar:

So did your leather seats pass inspection from your two inspectors, it looks like they're being very thorough.

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post #125 of 150 Old 10-21-2019, 08:39 PM - Thread Starter
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So did your leather seats pass inspection from your two inspectors, it looks like they're being very thorough.

Ha- Yeah, my GC was like, “Yeah, we gotta move them back to the garage. It’ll take a half hour for my guys to do it, including making a riser to keep them off of the ground.” Deal! They’re coming back in after painting, before the doors.
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post #126 of 150 Old 10-23-2019, 12:16 PM
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Quote:
Originally Posted by MinHeadroom View Post
Scratch Marty’s, I need to find the guy who did this:

... referenced here http://carltonbale.com/ultimate-home...ubwoofer-bass/, which linked back to avs (though I couldn’t find the thread).

Folded tapped horn riser goodness.
I have been looking for something like this. I was thinking about trying to build horns for a pair of the $30 12" JBLs that I have. It isn't a very common implementation, I guess because of positioning, or maybe just because most subs are larger than the stage height, but I'd say it has some great potential if done right.
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post #127 of 150 Old 10-26-2019, 02:53 PM - Thread Starter
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Similar to last post, I am trying to model subs to serve as risers, with the ports serving as stairs. That tangent is in another sub-forum:

https://r.tapatalk.com/shareLink/top...ink_source=app
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post #128 of 150 Old 10-30-2019, 11:19 PM - Thread Starter
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Hush box construction. 3d trigonometry is a PITA.

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post #129 of 150 Old 11-03-2019, 07:07 AM - Thread Starter
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Adult Cave! (but not in a creepy way) 13x16x7.5 ~1800 cubic feet

Hush box construction, day 2:

1. The box will have two levels
2. First level has air intakes and exhaust, approximately 25” separated
3. Fins may assist in directing exhaust from intake
4. Two 80mm fans each will control intake and exhaust. I chose these as they require less depth than 120mm fans.
5. The fans will be in a channel such that the cross section of the intake INCREASES as air gets closer to the fans and the projector, in efforts to avoid amplifying the sound (kinda like a reverse horn).
6. My Epson 5050 will get most air directed to/away it’s front fan ports, though there is enough space for some air to freely flow around the pj.
7. Some form of temperature control with a a display and manual override. Possibly a heat controlled failsafe cut off for the pj.
8. Linacoustic around the main channel.
9. Dust filters.
10. All of this will be removable from the existing crawl space entrance.
11. I have opted to have intake and exhaust in the theater and not the crawl space given possible temperature extremes in the crawlspace.
12. I considered exhausting into the crawlspace, but the airtight nature of the room and aforementioned temp extremes of the crawlspace dissuaded me from this.
13. Yes, I have read about various regrets in using hushboxes!

Current pre-made implementations for fan controls are meh. I am considering a home-brew Arduino to ensure at least some air flow, with a demand driven increase in flow. I understand that over-ventilating can be a problem.

Below is the lower level air channel design process.

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post #130 of 150 Old 11-03-2019, 12:29 PM - Thread Starter
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Hush box day 3:

I think this is gonna work. It ain’t small...
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post #131 of 150 Old 11-03-2019, 09:35 PM - Thread Starter
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Adult Cave! (but not in a creepy way) 13x16x7.5 ~1800 cubic feet

For perpetuity, it looks like it does something now:







Last edited by MinHeadroom; 11-03-2019 at 09:42 PM.
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post #132 of 150 Old 11-08-2019, 09:06 AM - Thread Starter
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Fans placed (more pics to come). The controller works nicely. At full speed the air movement is audible (from 16db in a quiet garage they were 28db). I am hoping linacoustic remedies some of the tunnel-noise of the air and fans.
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post #133 of 150 Old 11-08-2019, 09:11 PM - Thread Starter
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Not in the order of my preference, but my guys had time to kill: ceiling painted (SW Tricorn Black), walls painted(BM wrought iron).

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post #134 of 150 Old 11-09-2019, 08:21 AM
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Amazing what paint adds to a room! Looks great
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My Theater Build - Full Circle Cinema
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post #135 of 150 Old 11-10-2019, 12:12 AM - Thread Starter
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Thank you! Note where my guys were determined to drywall my sprinkler controller. That part needs paint again.
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post #136 of 150 Old 11-11-2019, 05:45 PM - Thread Starter
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Adult Cave! (but not in a creepy way) 13x16x7.5 ~1800 cubic feet

Gotta say I am really impressed with what linacoustic did to quiet down my hush box.

The fans are down from 34db at max to 22db. 18db at low speed!

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post #137 of 150 Old 11-11-2019, 10:26 PM
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Holy hush box!!!! That’s awesome.
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post #138 of 150 Old 11-12-2019, 07:10 AM - Thread Starter
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^ Thanks so much! My use case is niche (recessing it into a crawlspace window). It needed to be quiet, intelligently ventilated, removable, and not a compromise of my sound-proofing.

There was remarkably little docs or WIP’s for similar use cases, so i hope it works out!
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post #139 of 150 Old 11-13-2019, 06:55 AM
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The paint looks awesome. I wish I could get spouse clearance to go all black, it looks killer. I’m going to build a hush box for the same projector. My job will be a lot easier since I’m just trying to hush the PJ and also hide the white color of the Epson. I can’t imagine how you made all those crazy cuts for your hush box, it is truly impressive. Are you putting glass in front of the lens or not? I worry about dust build up with glass and frequent maintenance.
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post #140 of 150 Old 11-13-2019, 01:02 PM - Thread Starter
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Adult Cave! (but not in a creepy way) 13x16x7.5 ~1800 cubic feet

Thanks man! It was intimidating as it involved projected image quality, screen size, sound floor, AND sound proofing!

If you want specs, I can easily send you measurements and a parts list. Sides are 3/4” mdf and tops/ bottoms/ air channels are 1/2” mdf.

The cross section of air channels are a minimum of the surface area of the two 80mm fan circular surface areas. Math!

Oh, and yeah I’m ordering optical non-reflective glass.

The black and gray is nice- I’m trying to figure what to do to add some color. Considering themed geekery as follows (all of course printed on AT fabric over diffission/absorption):

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Last edited by MinHeadroom; 11-13-2019 at 01:22 PM.
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post #141 of 150 Old 11-14-2019, 06:00 PM - Thread Starter
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Adult Cave! (but not in a creepy way) 13x16x7.5 ~1800 cubic feet

(Double post)

Last edited by MinHeadroom; 11-14-2019 at 08:14 PM.
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post #142 of 150 Old 11-14-2019, 08:13 PM - Thread Starter
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https://www.edmundoptics.com/f/anti-...windows/12261/

Can anybody weigh in on this high-efficiency window from Edmund Optics for my hush box?

Big?
Bueler?
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post #143 of 150 Old 11-14-2019, 08:23 PM
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per DE recommendation.
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post #144 of 150 Old 11-15-2019, 07:55 AM - Thread Starter
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per DE recommendation.


Sweet- this is the model I am looking at, my thanks!
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post #145 of 150 Old 11-22-2019, 06:08 PM - Thread Starter
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Baby steps. Got my optical glass. Time to hang a sheet up and test some screen sizes before building out risers.

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post #146 of 150 Old 11-24-2019, 12:56 PM - Thread Starter
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Adult Cave! (but not in a creepy way) 13x16x7.5 ~1800 cubic feet

My state-of-the-art projector lens-shift calibrator.

I don’t trust my ability to rely on theory to estimate my preferred screen-size, riser height, row distance, and LCR tweeter height.

My wife threaten a coup yesterday...
Me: “But honey, we can’t choose a door width if we are not certain on clearance to the couches, and we can’t be certain of couch positioning until we have a test screen, and we can’t build a riser because we don’t know the needed height until we know the final position of the front row!”

Her: “I’ve accepted this will never be done.”

Gauntlet thrown.



Oh, and shrink wrap is the death hazard that kids love.
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post #147 of 150 Old 11-27-2019, 08:16 AM - Thread Starter
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5x $29 JBL 12” Black Friday Specials incoming.
The sliding/adjustable distance front row will double as a BOSS platform
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post #148 of 150 Old 11-30-2019, 07:55 AM - Thread Starter
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60” throw linear track actuator, casters, and isolators coming for my under-riser-trundel-bed- and-rolling-row-mini-BOSS riser.

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post #149 of 150 Old 11-30-2019, 02:57 PM
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I am excited to see how this Mechawarrior bossbedriser turns out!!!
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post #150 of 150 Old 11-30-2019, 04:24 PM - Thread Starter
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I am excited to see how this Mechawarrior bossbedriser turns out!!!

Integrating motors with my home automation is kinda my new favorite thing- it’s as close to feeling like a wizard that i can pull in real life
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