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Discussion Starter #1 (Edited)
Full Circle Cinema (Build Thread)

Intro

The name comes from the fact that my wife of 33 years and I met at a theater. I was the manager and she worked part time as a cashier. Now that the kids are out of college and we have a few bucks we're building a small dedicated theater in our home. We have always enjoyed movies and now our kids and their significant others do as well.

Build Info

Inspiration Builds
The DayDream - https://www.avsforum.com/forum/19-dedicated-theater-design-construction/2927570-oethe-daydreama-dedicated-theater-build.html

The Sierra Nevada - https://www.avsforum.com/forum/19-dedicated-theater-design-construction/2937108-sierra-nevada-theater.html

Ashton Cove - https://www.avsforum.com/forum/19-dedicated-theater-design-construction/2984800-ashton-cove-theater-build-24.html

Room 14'7" wide by 16'7" long by 8'9" tall

HVAC 1 supply & 1 return connected to house HVAC and 1 supply & 1 return dead vents powered with AC Infinity 8" fans

Sound Proofing room in side a room for walls, clips and channel ceiling, ceiling - 5/8" OSB/GG/5/8" Drywall, Walls - double 5/8" drywall with GG.

Power (2) 20 amp circuits, (3) 15 amp circuits

Equipment
7.2.4
JVC DLA X790R
Denon AVRX6400H
Speakers Definitive Technology in wall DI 6.5 LCR, DT in wall DI 5.5. Atmos - RSL C34E , Subs HSU VTF-3MK5
DVD - Panasonic DP-UB820
Line conditioner - Furman PL-Pro DMC
Remote - Logitech Harmony Elite
Automation - Insteon
A/V Rack - 27RU Sanus (CL find)
Seating - HT Market Sheffield front row, Cecil Commercial Theater seats rear row

This project started last September and includes the entire basement with the theater just one room of the overall project. I am doing most of the work myself with the exception of pluming, drywall taping, and carpet. I have worked with @BIGmouthinDC (thanks Jeff!!) since the start and have spent many hours on this forum educating myself.

Here is the overall layout of the basement


Planed entry sketch


Original plan


Plan after educating myself and working with @BIGmouthinDC
 

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Discussion Starter #3 (Edited)
After doing some research and working with Jeff I realized the double door was not going to cut it for sound proofing and the location would not work either so that was one of the first things changed. I also built an alcove for the equipment rack into the corner. It is fully decoupled as well and can be seen in the 3rd photo.

Here is the original location



and after re framing



To conserve as much room space as possible I removed the half walls used foam insulation for the vapor barrier then built full decoupled walls inside of that. I used TS horse mat under the base plates and and IB3 clips to attach to the top plates.

Design pic



Before



After



Then I added sound deadner to all the pipes

 

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Discussion Starter #4 (Edited)
With the framing complete it was time to deal with the window. Originally I had planned to remove it but after thinking about it further I decided to just cover it up. First I applied finish to the window, then I installed blinds, installed foam insulation, and capped it with plywood prior to sealing it up with the new vapor barrier.

Foam installed



Outside



Framing done so that if anyone ever decides to open it up it can be done without re framing.



Next up was cutting the base plates of the new openings for the door and A/V rack



And after the cement was done

 

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Then I added sound deadner to all the pipes



View attachment 2570838

Man, I wish I would have thought of that. I have a bunch of dynamat I could have used for the main sewer pipe that’s in my theater wall. The Silva brothers on this old house use cast iron pipe when it goes through a wall by a living space. I’ve always thought that was a good idea since the pvc is so noisy when people upstairs flush or the washer empties.
 

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Discussion Starter #6
Man, I wish I would have thought of that. I have a bunch of dynamat I could have used for the main sewer pipe that’s in my theater wall. The Silva brothers on this old house use cast iron pipe when it goes through a wall by a living space. I’ve always thought that was a good idea since the pvc is so noisy when people upstairs flush or the washer empties.
With just the deadner you wouldn't confuse it with cast iron pipes but helped a bunch and with the insulation, DD, GG, etc now you cannot hear it running down at all inside the room.
 

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Next up I came up with a conduit plan. First I ran one to where my projector will go. Ultimately this will go all the way back to the AV rack for now just from projector location back into the soffit.



Next I ran one from my digital movie poster location (at the bottom of the stairs) into the AV rack location. I did this just in case I ever want to use a PC to run the software vs just a memory stick.





This shot shows the two speaker wire conduits from the AV rack to the soffit (left) and the projector conduit to the soffit on the right

 

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The next issue to tackle was the HVAC. After a bunch of research on this forum and with folks in the know I decided to use a two prong approach. First the homes HVAC, I will have one 6" supply via insulated flex duct at the front (soffit) of the room and one return via insulated flex duct from the rear soffit. I will also have one 8" flex duct pulling air in from the soffit above the patio door in the rec room, to the front soffit. In the rear I have a 8" flex dumping air out of the room into the hallway. This duct has a wye 4" to the top of the av rack alcove and 6" to the rear soffit. both of these will utilize AC Infinity Cloudline T8 controlled inline duct fans.

To build the AV rack intake I went to the shop and using 3/4" MDF made a box, lined it with Linacoustic, and added a take off









Then I installed it by simply screwing from inside the alcove attaching it to the double drywall



In this shot you can see the T8 Installed. I used some left over rubber mat to insulate between the fan and the 2x it was mounted to.



Then I made a take off for the outlet simple plywood with a metal takeoff attached. Then plumbed in all the flex pipe and the wye



Finally I insulated the entire space. Both Ruxol just becuase I had it and pink fluffy. The rectangular opening will be covered with a vent so that I have access to the fan as well as a code requirement to be able to access the outlet. Since this area is outside of the double drywall GG room it should not pose a noise problem but I did use 5/8 drywall on all the outside walls of the theater including this alcove just as added insurance.



 

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While I spent many hours planning for wiring and than actually running the wires I didn't take any pics. As stated above I have (3) 20 amp circuits run to the theater (1) for subwoofers and (2) to the AV alcove. I also ran (3) 15 amp circuits (1) for lights and (2) for outlets. Other special wiring included:
1) 14/2 run from AV alcove to projector this will allow me to use a UPS so the projector lamp has backup power to shut down properly if the power goes out
2) Fire alarm cable from the hallway so the alarm in the theater will be tied into rest of home
3) Subwoofer cables to backer boxes in all four corners
4) (2) cat 6 cables from AV alcove to router
5) Speaker wire to LCR backer boxes since I won't have access once drywall goes up. The other speaker wires will run through the columns and soffits to the installed conduits and can be run later.
6) I also had to reroute our septic alarm this will end up being in one of the columns now
7) Finally I ran wire from both AC infinity T8 fans to the AV alcove. With the new connectors I purchased on Amazon this will allow me to extend the controllers to the AV rack with out altering the factory wiring.

One of the few wiring pics I took was the States sign off on the rough in inspection



Here is a shot of the AV alcove at this point



While early in the process equipment started to arrive. This was tough for me becuase while I really didn't want to store it or spend the money decisions had to be made for wiring and other construction reasons so I have a fair an mount of money sitting in a spare bedroom





Next up I was back in the shop making backer boxes for the LCR's and the front sub woofer cables. Basic construction 3/4" MDF with 1/4" cement board and GG between them. The LCR box size was determined by using the mfg recommended Cu ft then fitting into my space. Since I only had 4" depth to work with they are rather big but not deep.







Installed



 

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Discussion Starter #11
Some great pics! Looks like you got a pretty serious woodworking setup as well!
Thanks! Yes woodworking is my other hobby. I built the shop about 15 years ago and it has worked out well. I have a small spray room 10 x 12 and an office and industrial sewing machine in the upstairs. Its pretty much my dream shop, shop wide compressed air system, central dust collection, central heat and air, DirecTV, internet, surround sound, fridge the only thing I don't have is water. Due to the location it was just to much to justify.



Here are some of my pieces from the last few years





[img/https://www.avsforum.com/forum/attachment.php?attachmentid=2571636&stc=1&d=1558804882[/img]







 

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One thing I meant to mention is I have found it very helpful to not only mark things on the floor but to also take pictures in case I ever need to know where something is. Here are a couple examples

]



I started the clips and channel by setting up my laser level I found this tool to be really useful for this task. One thing to note in this picture is because of local fire code and blocking requirements I used Safe n Sound insulation. This allowed me to meet the blocking requirement with out undoing all my decoupling efforts.



Then the clips and channel went up followed by a layer of 5/8" OSB. I will have a double soffit and wanted the ability to attach anywhere making the OSB a must have. Also the conduit from the soffit to the center of the ceiling was done for a fiber optic star ceiling. I cut around the OSB then cut the end off, stuffed the end with insulation, and sheet rocked over it. If I need it I can just drill through the drywall. I have since been leaning strongly towards having @NightSkyMurals come out and paint the star ceiling on so not sure I will use this now but it was only a few bucks so no loss. In the second pic you can also see the septic alarm which will be relocated to the column on that side.













All ready for sheet rock :)
 

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First layer off dry wall going up. Again I found the laser level helpful for this



Unfortunately I have three different cleanouts in this room the plan for sound proofing is to save the sheet rock cutout GG it to a square of plywood and screw it over the hole. Since I am doing fabric panels it will be covered up.



For those days when you grab the wrong size hole saw:eek: here is a quick way to enlarge the hole. Just use the smaller hole saw as a guide bit it will only stick out about 3/16" but if you're care full it works like a charm





I used this bit to cut the larger holes with. Heads up they are made for 1/2" drywall so you have to cut the last bit with a razor knife



Now back to the dry wall



Acoustic sealant on the backer boxes





First layer complete


 

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I hired a taper to do the entire basement. While I do a fair amount of DIY this is one thing I always hire out





The rest of the basement is progressing as well. First time I have done curves like this pretty happy with the results







...and with that we're all caught up (7 months work) to where things are to date. Going forward posts will be real time.
 

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