My Theater will be built as a partial DIY, partial hired help. I am currently in-progress building a new home. I will do my best to keep this initial post up to date with my design/implementation of the room. I am designing the room in Google Sketchup. I also included something that some may find this useful as well, it is a Google sketch of a "THX Frustum" - put the center in your optimal position, and it will show you where your screen should go, how big it should be, and where you should put your speakers. Note that this was designed per the documentation on the THX site, so it uses the combined rear channel. You can find this in the sketchup model linked below. It is on the "THX Guides" layer.
Below are some screenshots taken from my Sketchup Model v. 2.1.0.
This section will detail the design decisions I made for my home theater. I figured it may be helpful to others, and may even draw in some helpful comments before I get to actual implementation. My current design is changing. I have been trying to come up with a theme for the theater and nothing really is cementing. So, I think I'll just steal from Ruben. His looks great, we'll see what I can do with my budget, which is clearly much less than his. Hopefully I won't be ripping things out quite as often, so maybe that will help. Once my sketchup re-design is done, I will post screenshots and an updated model here.
The HT will be built on a concrete slab. The outer room dimensions are 27' x 16' 3". The bottom of the "upper" ceiling (room-in-room construction is planned) will be 11' 6" high.
- Outwater Plastics - Odds and ends plastics manufacturer
For walls, I decided to go with a double 4" wall separated by a 1.5" air gap. I would have preferred a 2" air gap as is recommended by the Green Glue literature, but for space reasons, that extra inch matters. On the HT side of the inner wall I will place a 1/2" layer of Oriented Strand Board (OSB), Green Glue (GG), and then a 5/8" layer of Gypsum Wall Board (GWB). Most of the outer wall will be brick, but for those areas that will have GWB on the "outside" with respect to the home theater, 5/8" GWB + GG + 5/8" GWB will be used. In all cases, double GWB will use non-overlapping seams and have a layer of green glue using one tube of green glue for every 4'x4' section of wall. All walls will be insulated with standard el-cheapo pink insulation. During construction, the inner walls will be tied the the external walls directly. Then diagonal 10' metal straps will be installed on the interior of the room at the corners and a 18" strip of OSB will be installed along each wall on the top of the inner ceiling joists. The external wall tie-ins will then be removed and the inner wall will be tested. The room should be fairly stable at this point, when the OSB goes up on the interior it should be more than rigid enough.
There will be double ceilings just as with the walls - a complete room in room construction. The bottom of the upper ceiling will be 11'6" above the slab and this ceiling will be placed on top of the outer walls. There will then be a large (~5") air gap and then another framed in ceiling will be placed on top of the inner walls. No sound protection measures will be taken on top of the upper ceiling. The bottom of the lower ceiling will have OSB + GG + GWB, non overlapping seams, and 1 tube of green glue for every 4'x4' section of the second layer of GWB.
I will be using dedicated HVAC for the theater. There will be 2 high vents in the front of the room, 2 high returns in the rear of the room. There will also be a separate zone for the equipment closet with a vent at the top and a return at the bottom. My father-in-law is doing the HVAC and he has a system picked out. Hopefully we will be keeping the equipment closet around 60 degrees, the rest of the room 65-70 (I like it cold).
- Recommendation by Dennis Erskine
There will be a stage constructed in the front of the room that will house the front left and right mains as well as the subs that are built into the mains. It will be constructed using the following techniques:
- Acoustik Mat placed directly on slab
- Stage built directly on Acoustik Mat with at least 1/4" gap between all walls
- Sand fill entire stage
Really just getting started thinking about this, so this list will be evolving
There will be an A/V closet built onto the room. This closet will be framed with a staggered stud 6" wall (2x4 studs). Standard pink insulation will be weaved through the studs. The inside of the closet will have the same double 5/8" drywall as the rest of the HT. An equipment rack will be placed in this closet. I will be using the Middle Atlantic AXS-40-26. I chose this unit over the rotating version to more easily allow access into the A/V closet behind this unit, the total closet depth will be 3', and I prefer to maintain the ability to walk into it. The 40 height unit is the largest, according to Middle Atlantic, that will fit in a standard 80" height doorway since the rack must be elevated by about 3".
Middle Atlantic AXS-40-26-GG (rack)
TRACK50 (pull-out tracks)
TS310 (3.5" - 10" telescoping support for TRACK50)
AXS-WT50 (Cable management tray for TRACK50)
I am currently working on screen design. I would like to use a SMX screen, but it looks like it is out of my budget. I have inquired about getting just the raw screen material, but have not yet heard back.
The current plan is to just use 4 wall sconces. I may add some floor/stage lighting as well, still debating. As for sconces, I'm still searching. Our local theater has a light I really enjoy. I found this online, it is the closest I have found so far, but I don't want to spend >$400 per sconce.
- Review SandmanX thread - Done
- Review chinadog thread - Done
- Review mbgonzomd thread - Done
- Review Cathan thread - Done
- Review BIGmouthinDC thread - Done
- Review shawnwalters thread - Done
- Review CJO thread - Done
- Discuss HVAC solutions with contractor - In Progress
- Design theater in SketchUp - Done Enough
- Concrete Floor - Done
- Framing - Outer Room - Done
- Framing - Inner Room - Done
- External Decking / Brick - Done
- Door - Entrance - Done
- Wall Insulation - Done
- Electrical Rough-In - In Progress
- Wall Layer 1 - OSB - In Progress
- Attic Insulation - Not Started
- Attic Decking - Not Started
- HVAC - Not Started
- Wall Layer 2 - 5/8" GWB - Not Started
- A/V Closet OSB - Not Started
- A/V Closet GWB - Not Started
- Paint - Not Started
- Framing - Riser - Not Started
- Electrical Rough-In - Riser - Not Started
- Decking - Riser - Not Started
- Riser Component - Stair - Not Started
- Framing - Soffit - Not Started
- Decking - Soffit - Not Started
- Framing - Stage - Not Started
- Fill - Stage - Not Started
- Decking - Stage - Not Started
- Framing - Screen Wall - Not Started
- Framing - Columns - Not Started
- A/V Wiring - Not Started
- Sound Treatment - Not Started
- Equipment - Screen - Not Started
- Carpet - Not Started
- Equipment - Speakers - Not Started
- Equipment - Projector - Not Started
- Fabric Panels - Not Started
- Electrical - Final - Not Started
- Equipment - Rack - Not Started
- Equipment - Seating - Not Started
- Final Component Install / Calibration - Not Started
- Enjoy HT!
I'd like to thank, first off, the general forum community. Without AVS, I wouldn't even know what I wanted, much less have any hope of attaining a theatre of the quality that I hope to build. But I would like to also thank, in particular, several users who have posted great threads that I have directly used for this project. Note that this list will grow as I go through this project, so don't be offended if you're not here yet.
CJO: Great OP for consolidating information
Sandman: Must read thread
chinadog: Another great indexed thread
Edited by MidniteArrow - 8/18/12 at 9:18pm