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Discussion Starter #1
Hi all - thought I'd post some info on the dedicated HT I'm building. If you visit AVS Forums, the title might sound familiar. :clap:

Our house has a 4 car detached garage - has mostly been used as storage (er piles of junk), and for a workshop, and sometimes a car even managed to get in there, but not that often. Since we only have two cars, and after completing our modest remodel, I still didn't have a good space for a dedicated HT, I decided to convert half of the garage into that HT. Have been planning this since before the remodel actually, back in mid/late 2006, but finally swallowed hard and started spending I mean building in earnest a few months ago.

I hired out the basic room construction (new ceiling joists, framing, electrical, insulation, drywall, mud, and even construction of the stage and riser); I'm responsible for paint, screen wall, soffit/rope light tray, columns, acoustic treatments, fabric wall panels, low voltage wiring.

SketchUp model I did some time ago - doesn't reflect a few changes: double door entry, addition of soffit/light tray, rear column location will be in corners:



floorplan (room dimensions: 23' deep to front wall, 21' to false wall/screen; 17' wide; 9' ceilings (except soffit, which drops down 8 inches; seating at 11.5' and 17' approximately):



Here's where is stands at the moment (well almost up to date pics, not quite - finished the basic soffit framing and started screen wall framing) - from the outside (stone circle is a planter box / seating wall, we haven't picked a tree yet):



A few inside pics - before starting the soffit (stage is sand filled, 8" high):



after getting most of the soffit framing done (the soffit in front over the stage will be extended to have a curve matching the stage, and the screen lights will be relocated into that extension):



riser (12", fiberglass filled) - before drywall mudding was done:



entry doors - up over the stone steps on the outside, to the level of the rear riser):



My awesome rack - will upgrade that I think :innocent: - all the gear will be in the closet:



Equipment list / plans:

Pioneer AVX-1120-K - got it
Toshiba HD DVD Player - got it
Blu ray player - TBD, Oppo please? (crossing fingers on the contest) and/or PS3
power conditioner - TBD
XBOX 360 - TBD
speakers - currently B&W DM602 fronts, DM601 side surrounds, CC6 center; will be upgraded, currently thinking of TCA Pro-10s for LCR, Hsu HIW-1s for side / rear surrounds (wired for 7.1)
subwoofer: Velodyne VA-1210 or whatever its called, old - will be upgraded, planning THT LP
projector: Panasonic PT-AE4000U planned
screen: Seymour A/V DIY planned, 136" 2.35:1 or thereabouts
Lighting control: 4 zone Grafik Eye - got it
Seating: row of 4 curved Berklines on riser; row of 3 curved Berklines in front - ordered, waiting until I have carpet in to take delivery.
A/C - split A/C, either LG ArtCool or Mitsubishi Mr. Slim.

Surround speakers will be buried in columns on the side and rear corners.
LCR & subwoofer will be behind acoustically transparent screen on false wall (24" from front wall).
Walls will be fabric covered frames with rigid fiberglass panels (OC 703 or similar) to ear level and below.
Soffit will be stuffed with pink insulation and covered with kraft paper or similar, to add some midbass trapping.
Superchunk midbass traps will be placed in the front corners behind the screen; and in the rear corners within rear surround columns.

That's about all I can think of the moment - let me know if you have any questions, suggestions, etc.

Brad
 

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Looks to be a nice setup in a nice spot. One thing I would invest in and it may slip most minds is a smoke detector in the theatre tied in directly to the house smoke detector system. The reason I say this is a freind of mine had a small electrical fire in a setup similar to yours in the garage and had no idea till you guessed it...... it was to late, small fire ===== lots of damage. When the smokes are all together, one sences smoke they all go off.
 

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Very nice theater! It is coming along great! Keep us posted on with updates.
 

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Discussion Starter #5
Nice room you're going to have there... :T

Any reason why you're moving the columns to the corners instead of the original plan???
Yes, due to the change to the entry doors - double doors, and offset to one side, so there won't be room (or symmetry) for columns beside the door(s).
 

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Discussion Starter #8
Got it :T

Any plans for the grand opening??? :whistling: :innocent:
Haha, man, way too many things still to work on to even think about that - and I really only get in about 1 day's worth of work on it a week, most of that standing and staring and wondering "hmm, now how am I going to do this...". Fontana is pretty close though... :T
 

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Nice Brad, very nice.

What do you have planned for the room treatments and placement of the surrounds and subs?

Have you plugged the room dimensions into a mode calculator yet to possible ID potential problems before you start testing/cal?

What kind of wall is it in between the HT and garage? Not that it will matter that much for sound leakage (unless you have someone living in your garage!) just that it will be acoustically different from the opposite wall (which means the calculators will be slightly out).

I bet your already thinking of what the first movie will be!
 

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Discussion Starter #11
Nice Brad, very nice.

What do you have planned for the room treatments and placement of the surrounds and subs?
Thanks! Surrounds will be inside columns on the sides and in the rear near the corners. Subwoofer (THT LP planned) will be behind the false wall, either firing toward one of the side corners, or firing up to the ceiling.

Room treatments, here's my tentative plan: linacoustic on the entire front wall; superchunk traps in the front wall corners; superchunk traps buried inside rear corner speaker columns (except for the middle piece where the rear surrounds will be); pink faced fiberglass inside the soffit for more bass trapping; fabric covered 1" fiberglass panels (OC 703 or whatever similar I can find at a good price locally) either up to and slightly above ear level on the side walls and back wall, or just at reflection points, depending on what my measurements (RT60) show once I've got the carpet, furniture, bass traps, soffit traps in.

Have you plugged the room dimensions into a mode calculator yet to possible ID potential problems before you start testing/cal?
I created a spreadsheet with "good" room ratios from various publications I could find (Everest book I think? it was a while ago), and ended up fairly close to one of the favorable ratios. Just plugged my room dimensions into Bob Gold's calculator, got a few yellows down low, and green otherwise, so I think I'm in not too bad shape.

What kind of wall is it in between the HT and garage? Not that it will matter that much for sound leakage (unless you have someone living in your garage!) just that it will be acoustically different from the opposite wall (which means the calculators will be slightly out).
The wall was supposed to be a double wall, but the contractor got cute and used 2x8 framing instead of double 2x4, thinking it would be the same thing - I got a little moo, but got over it, and asked him to DD/GG that wall as compensation for his screw up, which he did. The closet door is there though, so not sure that the extra mass/damping will do much of anything (nor would the double wall actually) unless I seriously beef up the door (its a Safe N Sound door). And of course having the door there will also present some challenges vis symmetry and room treatments.

I bet your already thinking of what the first movie will be!
Not really yet - too much in front of me still! Although after framing in my screen wall yesterday, I sat and looked at it and caught myself mouthing explosion sounds, visualizing some sort of fantasy / epic / whatever film. :laugh:
 

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Discussion Starter #12
A bit of progress the last couple weeks, not as much as I would have liked to have accomplished, but still progress.

Framed screen wall. No screen yet. The opening is the approximate size of the planned screen, but may have to mount it a little higher than that, in order to keep the PJ ceiling mount from hanging down too low, since I want to due the poor man's CIH, which means the lens can be no lower than the top of the screen. Current eye height is at 1/3 of screen height, so moving it up would be a bit of a compromise, grumble.



Added the curved front of the soffit to match the curve of the stage. The whole soffit was a bit of an afterthought, so I had to relocate the screen lights down into the soffit. Getting that thing up onto the ceiling was a bear with no help, but I managed to figure out a way to do it.



Close up of one of the "old" screen light holes that I plugged.



View of the bracing I created to support the front edge of the soffit.



Added two layers of 1x2s for stage lip, will route a curve on the top edge.

 

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Looks great. I have a garage that is basically used for storage/junk also. I wonder what the wife would think about me doing something like that.:foottap: I think if I show her your setup she might go for it. :heehee: I look forward to more pics...:T
 

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Thanks tc - fortunately, I had the benefit of having a 4 car garage, so converting 1/2 still left me with a 2 car garage - not sure if I would have been able to get a permit otherwise, although that may have been a local ordinance. Hope to see a build thread from you soon! :T
 

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Good looking (future) theater, it looks like the real deal i love the front riser and am looking forward to it takeing shape. Great job!:T
 

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Looking like a great plan Brad, and you are off to a very good start too. I just had a thought when I saw you were thinking about changing your speakers... what about building some DIY speakers into the columns? It's probably another complicated project on top of everything else you're doing, but I just thought I'd throw it out there.
 
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