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Backyard Theater - Outdoor Movies

Backyard Theater - Outdoor Movies  




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Author Topic: My Outdoor Theater: Combine Concert & Movie  (Read 28585 times)
OutdoorGeek
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« Reply #15 on: July 09, 2013, 08:25:06 pm »

The screen saver was inadvertently going for the last few songs Beth played as the projector was warming up.  She said it made her feel like playing Pink Floyd!
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Underdog66
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'Cause cuttin the roof off my den would be stupid!


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« Reply #16 on: July 10, 2013, 07:01:59 am »

Wow!  This beats my playing my Purple Rain CD as my audio sound check before my BYT movies!  Grin

Love your setup!
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Infinity Backyard Motion Pictures
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« Reply #17 on: July 12, 2013, 11:05:38 am »

cecilb,

Don't have a live webcam, but here are a couple video clips from these two evenings.  Sound quality is not great as it was captured by camcorders but sounded quite nice live.  Both these women were fantastic performers and I encourage all to visit each of their web pages.  (http://www.ellis-music.com/ and http://www.bethwoodmusic.com/)

<a href="http://www.youtube.com/v/uxVtvEVwxPg" target="_blank">http://www.youtube.com/v/uxVtvEVwxPg</a>

<a href="http://www.youtube.com/v/slUogdARd78" target="_blank">http://www.youtube.com/v/slUogdARd78</a>

<a href="http://www.youtube.com/v/BCfTqHmQOWg" target="_blank">http://www.youtube.com/v/BCfTqHmQOWg</a>

<a href="http://www.youtube.com/v/Mp8fDtc4_Xc" target="_blank">http://www.youtube.com/v/Mp8fDtc4_Xc</a>

Best!
O.G.
« Last Edit: July 14, 2013, 07:06:32 pm by OutdoorGeek » Logged
Khylan
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The BandWagon Poolside Cinema


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« Reply #18 on: July 12, 2013, 11:20:34 am »

Amazing!!!  I don't have the room for something like that.. but wish I did... this is taking the BYT to a new level.
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The BandWagon Poolside Cinema - Virginia Beach
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« Reply #19 on: July 12, 2013, 01:14:29 pm »

This is a very impressive setup. Is there any way you could describe or show pictures of how you built the frame? I am trying to do something very similar for a 16x9 screen but am struggling with the design. I was thing of long 4x4 posts, but your design looks like it would be more substantial.

Thanks!
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OutdoorGeek
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« Reply #20 on: July 14, 2013, 07:02:32 pm »

JMUwalker,

Yes!  I'm organizing some old pictures of the screen to better show its construction.  Should get something posted in the next couple days...

Best,
Eric
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ranman101
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« Reply #21 on: July 14, 2013, 11:32:36 pm »

Like others have said, awesome set up. I too love the frame, deck.....I love it all. Nice work.
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OutdoorGeek
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« Reply #22 on: July 16, 2013, 10:12:58 pm »

JMUwalker,

This design is very sturdy but it is heavy, requires 6 adults to raise/lower, and takes about 1 1/2 hours to set up and perhaps 1 hour to take down.  (Yes, we take it down each time.)  However, it was the least expensive design I could come up with as it cost only about 100 for the 2x4s, perhaps another 100 for the screws, fabric clips and bungee cords, and another 100 for the fabric.  On the plus side, there is absolutely no sag, no guy wires are required, and I have no fear of it toppling in the wind.  (The screen would rip at the clips before the frame would fail.)  The bottom of the viewing area is a comfortable 6’ above the ground.  PVC or inexpensive fence tubing would not span 12’ without sag, and I didn’t want the complexity of lots of uprights and/or guide wires.  Aluminum tubing is way too expensive.

The frame measures 24’ wide 16’ high.  The screen surface is a single piece of unfinished blackout cloth measuring just over 9’ high by 22’ wide.  (Cinemascope aspect ratio)  It is secured by 96 small bungee cords and small fabric clips from Dazian.  The key is to use lots of bungees to keep the spacing small (about 8 ½ inches between clips) and keep the force per bungee low.  The screen is absolutely taught and planar and we are on the 7th season with no tears.  I do not remove the fabric clips for storage and fold it loosely with clips attached, viewing side inside.  Each bungee stretches to only about 1 foot between the fabric clip and frame, from an initial length of maybe 8”.  Perhaps only 1 to 2 pounds of force for each bungee so the stress on the fabric clips is minimal.

 I have 6 fairly large canopy anchors screwed into the ground, if memory serves, each rated to over 2,000 lbs.  We have clay below a few inches so these are very secure.  I leave these anchors in the ground and the lawnmower just misses them at the highest setting.  (A tripping hazard to be sure but so far no one has hurt themselves.)

The 3 uprights are made of two 16’ long 2x4, screwed together to make an “L” on the side sections and a “T” in the center.  The 3 rear diagonals are a single 16’ 2x4 as are the 2 diagonal braces just behind the screen.  The horizontal frame members are 12’ long (times two to get the 24’ width) and are made of two 2x4s screwed together like an “L”, and the vertical frame member is around 11’ and is constructed identically.  This provides about 1’ spacing all the way around the screen.  The bottom of the viewing surface is about 6’ above the ground (16’ – 11’ + 1’).  The bungees are attached to the frame using short deck screws and small washers and remain on the frame.

Approximately 50 carriage bolts bolt the frame together (goes very fast with a cordless drill and socket).  Large bolts are used to attach the uprights and rear braces to the canopy anchors.  I use the same size large bolts to attach the 3 rear diagonals to the uprights and use a jam nut to ensure it will not come loose.  When not in use, the entire screen stacks neatly along my garage.

One tip is to cut the fabric longer than 22’ initially as applying tension to it the first time caused the screen to no longer be square.  I was able to trim it close but not quite square without unacceptably reducing the screen width.

I never drew up or the plans, just really crude “napkin sketches” so I will use pictures to illustrate.  I labeled each connection with letters to aid in assembly.




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OutdoorGeek
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« Reply #23 on: July 16, 2013, 10:16:47 pm »

More Pictures:


* DSC08010.JPG (214.32 KB, 1024x768 - viewed 305 times.)

* DSC08020 (2).JPG (220.69 KB, 1024x768 - viewed 302 times.)

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* DSC05006.JPG (115.76 KB, 1024x768 - viewed 301 times.)
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OutdoorGeek
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« Reply #24 on: July 16, 2013, 10:20:58 pm »

Here are a few more pictures.  The last one is the screen stacked in my garage.


* DSC05007.JPG (125.57 KB, 1024x768 - viewed 299 times.)

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* DSC08027 (2).JPG (63.48 KB, 576x768 - viewed 298 times.)
« Last Edit: July 16, 2013, 10:24:12 pm by OutdoorGeek » Logged
OutdoorGeek
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« Reply #25 on: July 16, 2013, 10:31:46 pm »

Here is my pre-show introduction video clip - it shows screen assembly... Smiley

Best!

<a href="http://www.youtube.com/v/YAW91Lg01p8" target="_blank">http://www.youtube.com/v/YAW91Lg01p8</a>
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ranman101
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« Reply #26 on: July 18, 2013, 01:30:19 am »

Awesome music! Must be great times at your theater.
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Oldalgebra
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« Reply #27 on: July 18, 2013, 11:15:38 am »

This is REALLY something! I somehow missed your post when you first opened it with the clips of the singers. What a wonderful evening. I want to be invited over next time!
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« Reply #28 on: February 24, 2014, 10:46:19 pm »

Hello all,

Haven't posted in a while but given we are headed for another bout of below zero temperature in Minneapolis I thought I'd update on my latest (well, last season) upgrades.  I have finally completed 3 matching low frequency enclosures for my front three channels. 

To keep them from becoming prohibitively heavy, I used 3/4" Baltic birch plywood with extensive bracing rather than heavier combinations of MDF or MDF plus plywood. 

Here are pictures taken during assembly to give an idea of the construction.

Best!
Eric


* DSC_0007.jpg (112.42 KB, 1280x850 - viewed 274 times.)

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* DSC_0031.jpg (91.22 KB, 1280x850 - viewed 257 times.)

* DSC_0033.jpg (84.63 KB, 1280x850 - viewed 271 times.)
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OutdoorGeek
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« Reply #29 on: February 24, 2014, 10:54:34 pm »

To continue:

These are 18" JBL 2245h drivers in 12 cubic foot ported boxes, about 10 cubic feet net internal volume.  They are tuned to 22.5Hz and with a 6 dB "bump" high pass filter are flat (-3dB) down to about 22 Hz.  Each has a dedicated 600 Watt amplifier channel (Electrovoice Q66) and each is responsible for the low frequency content for its respective channel plus 1/3 the power of the low frequency effects (.1) channel.

The finish is pickup truck bed liner applied with a roller (from a 1 Gallon can).  The birch was so beautiful I hated to cover it up, but it is the most durable and protective finish I can apply that easily withstands spills and night time dew.

I am quite pleased with the sound.  They have fabulous low frequency extension but do not sound heavy or boom, just natural.  Tons of headroom.  The only limitation is that I need to keep the SPL down to be respectful of the neighbors.  Now I need a bigger lot; perhaps 5 acres or so should do!

Best,
Eric


* DSC_0034.jpg (80.83 KB, 1280x850 - viewed 271 times.)

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* DSC_0193.jpg (159.14 KB, 1280x850 - viewed 286 times.)
« Last Edit: February 24, 2014, 11:07:20 pm by OutdoorGeek » Logged
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