SUBmarine Home Theater - Page 6 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #51 of 109 Old 05-21-16, 08:19 AM
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Re: SUBmarine Home Theater

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Todd Anderson wrote: View Post
Quick photo update, with the A5's added in as mains...


Did you build the absorbers and diffusers yourself from plans ??
They really look great they way they are finished.

Good Listening

Jack

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post #52 of 109 Old 05-21-16, 08:52 AM Thread Starter
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Re: SUBmarine Home Theater

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Savjac wrote: View Post
Did you build the absorbers and diffusers yourself from plans ??
They really look great they way they are finished.
No...pretty much built them all from scratch taking bits and pieces of tips and build instructions from a variety of different sources (and images). I took that info and then mixed in my own ideas and – viola – they were born. I received the most help with the giant binary slat diffuser...an acoustic specialist over in Europe helped me design and tailor the design to best fit my space.

In total, I built 6 traps and the diffuser.

All of the rear room traps (with the exception of the binary diffuser) have craft facing on top of the 703 insulation board. The diffuser has 703 board behind the slats/black material. I guess I didn't take pictures of how I finished the back off...but it has burlap on it.

The date on the pictures is 2011. Yikes, how time flies. I vividly remember spending quite a few October nights in my garage listening to the World Series and putting the finishing touches on them.

Here are some images from the build:
Attached Thumbnails
SUBmarine Home Theater-img_1161.jpg  

SUBmarine Home Theater-img_1162.jpg  

SUBmarine Home Theater-img_1160.jpg  

SUBmarine Home Theater-img_1170.jpg  

SUBmarine Home Theater-img_1172.jpg  

SUBmarine Home Theater-img_1174.jpg  

SUBmarine Home Theater-img_1185.jpg  

SUBmarine Home Theater-img_1175.jpg  

SUBmarine Home Theater-img_1189.jpg  

SUBmarine Home Theater-img_1191.jpg  

SUBmarine Home Theater-img_1194.jpg  

SUBmarine Home Theater-img_1159.jpg  

SUBmarine Home Theater-img_1179.jpg  

SUBmarine Home Theater-screen-shot-2016-05-21-9.42.15-am.png  

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post #53 of 109 Old 05-21-16, 09:02 AM Thread Starter
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Re: SUBmarine Home Theater

Here are some notes about the materials:

"Supplies are fairly straight forward. I found a distributor in Maryland that sold JohnsManville 703 insulation board and Knauf Ecose 705 insulation board. The primary wood I used was Pine #1 (I did use Pine #2 for the base of the frames and for the sides that aren't visible). If you ever plan on using/staining this kind of wood, plan on many MANY many hours of sanding and prepping the wood. Otherwise, your efforts will be for not. For the slat diffuser I purchased furring strips. And, of course, loaded up on tons of other supplies, countersink drill bits, screws, block sanders, stapes, brad nails, wood glue, sand paper and stain and material (Cloth) and finishing strips. In terms of tools, I relied heavily on: a drill (with a 3 1/2" hole saw bit), a power miter saw, an orbital sander, a jig saw, a Dremel (sanding and wood removal attachments), a pneumatic nail gun (both finish nailer and brad nailer), a staple gun, and a cabinet making Bessy Clamps. Honestly, making these without those core tools would be almost impossible.

For the cloth, I purchased "utility speaker cloth," burlap, and quilting cloth (which is nice because it is relatively thin like muslin BUT comes in lengths of 108" and can be purchased in a multitude of colors)... all at JoAnne Fabrics.

For the bass trap frames, I opted to drill 3"+ holes into the framing... for those of you interested in doing this... there are several things you should know. First off... you need a solid drill with a ton torque. A cheap cordless drill will suffer and a low amp will flame out and die (believe me, it happened to me)... I suggest a good 9 amp or better drill (this is the one I used). Secondly, the drill and the hole saw bit make a nice hole, but they are rough on the wood and the resulting holes require a lot of sanding (note, MDF board might not have this problem... I chose pine though, because I wasn't comfortable using MDF due to some of its carcinogenic properties... especially when it is airborne with dust particles... also I've read it can smoke and release fumes when heavily drilled). I used various dremel sanding bits and then leaned on a randomly orbiting sander to finish off the smoothing of the outer rim of each hole. Talk about time consuming (and very tedious work!).

...hole saw bits can cause a drill to kick back and bite. Anyone reading this that isn't familiar with using these tools in tandem should be aware of that --- especially if you have a drill that produces a lot of torque. I had a couple instances when drilling (I believe I drilled about 111 holes in making the 6 corner traps!!! Crazy, I know!) where the drill caught in the wood or kicked back - it was so powerful... almost scary.

So, please, everyone, proceed with caution. If you do use a hole saw, start drilling the holes at a very VERY slow and controlled speed. Once the saw gets in the wood, it becomes more manageable you can run your drill at full speed. Eye protection and hand protection are a must -- and don't skimp on your tools or work set-up... make sure you have everything to do the job safely and efficiently. Cutting corners is bound to lead to an injury."



Here's an image of the board that I drilled on ...Yikes!

This project was fun. It ended up being extremely time consuming...research, gathering supplies, and the build.
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SUBmarine Home Theater-img_1180.jpg  

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post #54 of 109 Old 05-21-16, 01:28 PM
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Re: SUBmarine Home Theater

Thank You Todd, this helps more than you could know.
I have all the tools including a nice powerful and solid drill press, needed and can do this but I do see it will take some time...which I am good with. I am just finishing up the garage cleaning from the honey do plans I just finished so I can make a bit of an assembly line to cut the wood to lengths and then to cut the holes. No quick way to stain and frame everything proper although I do have jigs for that but its one at a time I see.

I have an odd back wall as it is open to the stairway landing and the washroom. I would love to cover this back wall in a diffuser similar to what you have so well created, but I may have to guess on the placement of the wood slats.

Wow I am actually looking forward to a tedious, dirty and smelly project, this ought to be good.
Here is my back wall if you have any thoughts....Thank You again Todd, this is brilliant. Believe it or not the room is exactly 15' wide by 20' long. Knee walls are 48"


Good Listening

Jack

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post #55 of 109 Old 05-21-16, 02:05 PM Thread Starter
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Re: SUBmarine Home Theater

Cool! You could definitely create one for that space. Mine hangs from the ceiling (which obviously necessitated some creative internal bracing to keep it from sagging. If you get creative, you could possibly create a floor standing diffuser...or possibly one that inhabits the entire back wall with a door?

The slat positions are easy to calculate... you need to use a random binary sequence. Here's the one I used (I'm sure you can easily generate one of you own):

1= slat
0= no slat

position:126 ***** 1
position:125 ***** 0
position:124 ***** 0
position:123 ***** 0
position:122 ***** 0
position:121 ***** 0
position:120 ***** 0
position:119 ***** 1
position:118 ***** 0
position:117 ***** 0
position:116 ***** 0
position:115 ***** 0
position:114 ***** 0
position:113 ***** 1
position:112 ***** 1
position:111 ***** 0
position:110 ***** 0
position:109 ***** 0
position:108 ***** 0
position:107 ***** 1
position:106 ***** 0
position:105 ***** 1
position:104 ***** 0
position:103 ***** 0
position:102 ***** 0
position:101 ***** 1
position:100 ***** 1
position:099 ***** 1
position:098 ***** 1
position:097 ***** 0
position:096 ***** 0
position:095 ***** 1
position:094 ***** 0
position:093 ***** 0
position:092 ***** 0
position:091 ***** 1
position:090 ***** 0
position:089 ***** 1
position:088 ***** 1
position:087 ***** 0
position:086 ***** 0
position:085 ***** 1
position:084 ***** 1
position:083 ***** 1
position:082 ***** 0
position:081 ***** 1
position:080 ***** 0
position:079 ***** 1
position:078 ***** 0
position:077 ***** 0
position:076 ***** 1
position:075 ***** 1
position:074 ***** 1
position:073 ***** 1
position:072 ***** 1
position:071 ***** 0
position:070 ***** 1
position:069 ***** 0
position:068 ***** 0
position:067 ***** 0
position:066 ***** 0
position:065 ***** 1
position:064 ***** 1
position:063 ***** 1
position:062 ***** 0
position:061 ***** 0
position:060 ***** 0
position:059 ***** 1
position:058 ***** 0
position:057 ***** 0
position:056 ***** 1
position:055 ***** 0
position:054 ***** 0
position:053 ***** 1
position:052 ***** 1
position:051 ***** 0
position:050 ***** 1
position:049 ***** 1
position:048 ***** 0
position:047 ***** 1
position:046 ***** 0
position:045 ***** 1
position:044 ***** 1
position:043 ***** 0
position:042 ***** 1
position:041 ***** 1
position:040 ***** 1
position:039 ***** 1
position:038 ***** 0
position:037 ***** 1
position:036 ***** 1
position:035 ***** 0
position:034 ***** 0
position:033 ***** 0
position:032 ***** 1
position:031 ***** 1
position:030 ***** 0
position:029 ***** 1
position:028 ***** 0
position:027 ***** 0
position:026 ***** 1
position:025 ***** 0
position:024 ***** 1
position:023 ***** 1
position:022 ***** 1
position:021 ***** 0
position:020 ***** 1
position:019 ***** 1
position:018 ***** 1
position:017 ***** 0
position:016 ***** 0
position:015 ***** 1
position:014 ***** 1
position:013 ***** 0
position:012 ***** 0
position:011 ***** 1
position:010 ***** 0
position:009 ***** 1
position:008 ***** 0
position:007 ***** 1
position:006 ***** 0
position:005 ***** 1
position:004 ***** 1
position:003 ***** 1
position:002 ***** 1
position:001 ***** 1
position:000 ***** 1


Basically, keep everything evenly spaced and you end up with a random slats that help create a uniform distribution of the diffuse reflected sound. (I let anyone with a better grounding in theory explain further ;-)

The gentleman that helped me incorporated absorption simply because my seating position is so close to the diffuser (about 3 ft away). If you have more space (5 feet or more?) you could probably create your own diffuser that could mount on the wall. Checkout this site: http://arqen.com/sound-diffusers/
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post #56 of 109 Old 05-21-16, 02:06 PM
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I've seen some really nice setups with your same room. Is all of your gear in this room on the other side? If so can we see a pic? Here's a nice example of a setup with a room similar to yours. SUBmarine Home Theater-image-2344832813.jpg
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post #57 of 109 Old 05-21-16, 02:08 PM
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Was that binary code Todd?
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post #58 of 109 Old 05-21-16, 02:15 PM Thread Starter
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Re: SUBmarine Home Theater

Yes
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post #59 of 109 Old 05-21-16, 02:18 PM
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Quote:
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Yes
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post #60 of 109 Old 05-21-16, 05:08 PM
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Re: SUBmarine Home Theater

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I've seen some really nice setups with your same room. Is all of your gear in this room on the other side? If so can we see a pic? Here's a nice example of a setup with a room similar to yours. Attachment 121785
That does look nice but my knee walls are a bit shorter. Of course you can see the mess, y'all are willing to provide great ideas I am willing to take the risk no one will laugh....so that I can hear it of course

Here it is without the newer curtains and of course me with my friendly movie buddy






Good Listening

Jack

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Last edited by Savjac; 05-21-16 at 05:16 PM.
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