Drop ceiling upgrade - AVS Forum
Forum Jump: 
 1Likes
  • 1 Post By lbrown105
 
Thread Tools
post #1 of 12 Old 05-11-2014, 07:51 PM - Thread Starter
AVS Special Member
 
lbrown105's Avatar
 
Join Date: Nov 2011
Location: Milwaukee, WI
Posts: 1,017
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 243 Post(s)
Liked: 120
I decided to upgrade my HT ceiling by replacing the drop ceiling with a double layer of 19/32" OSB and 5/8" drywall on hat channel and whisper clips. Aesthetics, sound control and in room response were all considerations when making this change. I thought some of you might be interested in my experience so far. In addition to the ceiling therre were some other changes for lights,paint and carpeting (on back order and coming in a few more weeks). I also plan to add another Orbit Shifter next weekend and some custom slanted eights in about 3 weeks.

Here are a few before and after shots







and a few shots along the way







Pre-Pro: Emotiva XMC-1, DSP: Mini DSP 2x4 balanced
Amplifier: Sunfire TGA7400, Lab Gruppen FP10000Q
Speakers: JTR Noesis 212HT (LCR), JTR Slant 8's (surrounds), 3 Orbit Shifter LFU's
Sources: PS3, HTPC, Dish Network
Projector: Epson 8350
Screen: Seymour XD AT 138" diagonal 16:9
lbrown105 is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 05-11-2014, 08:02 PM - Thread Starter
AVS Special Member
 
lbrown105's Avatar
 
Join Date: Nov 2011
Location: Milwaukee, WI
Posts: 1,017
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 243 Post(s)
Liked: 120
For the sound isolation the change was dramatic for reducing SPL upstairs in the house. I do not have measurements but now you can only hear low rumbling bass even when playing near reference. This is huge for me since sometimes I listen to music or movies when the family is upstairs watchinng TV or sleeping.

As for the in room response it is interesting. I did some measurements a few days before I started the demo. The I put everything back together with the same equipement and setting. I noticed increased SPL of 3-5dB in the 50-150hz region and also faster bass decay in the 35-50hz range. More bass with equal and faster decay times is very welcomed. The red waterfall and spl lines are with the new ceiling the blue is drop ceiling.




Pre-Pro: Emotiva XMC-1, DSP: Mini DSP 2x4 balanced
Amplifier: Sunfire TGA7400, Lab Gruppen FP10000Q
Speakers: JTR Noesis 212HT (LCR), JTR Slant 8's (surrounds), 3 Orbit Shifter LFU's
Sources: PS3, HTPC, Dish Network
Projector: Epson 8350
Screen: Seymour XD AT 138" diagonal 16:9
lbrown105 is offline  
post #3 of 12 Old 05-11-2014, 08:27 PM
AVS Special Member
 
rhed's Avatar
 
Join Date: Nov 2007
Posts: 1,419
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 237 Post(s)
Liked: 216
Nice Lance.. Can't wait to come up next year again. And can't definitely wait to see your finished HTC with 3 OS.. smile.gif
rhed is offline  
post #4 of 12 Old 05-11-2014, 08:32 PM - Thread Starter
AVS Special Member
 
lbrown105's Avatar
 
Join Date: Nov 2011
Location: Milwaukee, WI
Posts: 1,017
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 243 Post(s)
Liked: 120
thanks Rhed and looking forward to seeing you next year. Maybe we can take a road trip up to my theater and have a JTR party next year when your here for Axpona.

Pre-Pro: Emotiva XMC-1, DSP: Mini DSP 2x4 balanced
Amplifier: Sunfire TGA7400, Lab Gruppen FP10000Q
Speakers: JTR Noesis 212HT (LCR), JTR Slant 8's (surrounds), 3 Orbit Shifter LFU's
Sources: PS3, HTPC, Dish Network
Projector: Epson 8350
Screen: Seymour XD AT 138" diagonal 16:9
lbrown105 is offline  
post #5 of 12 Old 05-15-2014, 03:53 AM
AVS Special Member
 
coolgeek's Avatar
 
Join Date: Sep 2011
Posts: 1,722
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 171 Post(s)
Liked: 98
lbrown, do you think it'll work without whisper clips? I mean, just have a drop ceiling with plywood and pink fluffy in the middle?
coolgeek is offline  
post #6 of 12 Old 05-15-2014, 04:54 AM - Thread Starter
AVS Special Member
 
lbrown105's Avatar
 
Join Date: Nov 2011
Location: Milwaukee, WI
Posts: 1,017
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 243 Post(s)
Liked: 120
Cool, not really sure how you would do a drop ceiling with plywood but if you mean standard two layers without clips the performance is pretty well documented for sound isolation ( much less at lower freq), for in room response I think the clips are very important for the flexing action. I think the key is moving mass, so without the clips you still have the mass but much less movement.

Pre-Pro: Emotiva XMC-1, DSP: Mini DSP 2x4 balanced
Amplifier: Sunfire TGA7400, Lab Gruppen FP10000Q
Speakers: JTR Noesis 212HT (LCR), JTR Slant 8's (surrounds), 3 Orbit Shifter LFU's
Sources: PS3, HTPC, Dish Network
Projector: Epson 8350
Screen: Seymour XD AT 138" diagonal 16:9
lbrown105 is offline  
post #7 of 12 Old 05-15-2014, 06:42 AM
AVS Special Member
 
coolgeek's Avatar
 
Join Date: Sep 2011
Posts: 1,722
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 171 Post(s)
Liked: 98
Quote:
Originally Posted by lbrown105 View Post

Cool, not really sure how you would do a drop ceiling with plywood but if you mean standard two layers without clips the performance is pretty well documented for sound isolation ( much less at lower freq), for in room response I think the clips are very important for the flexing action. I think the key is moving mass, so without the clips you still have the mass but much less movement.

I mean just use ply wood and glue them to a 2x4 structure on my ceiling.

Thanks for the info about flexing
coolgeek is offline  
post #8 of 12 Old 06-15-2014, 06:50 AM - Thread Starter
AVS Special Member
 
lbrown105's Avatar
 
Join Date: Nov 2011
Location: Milwaukee, WI
Posts: 1,017
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 243 Post(s)
Liked: 120
Here are some of the latest pics. Still need something (diffusive or absortive) on the front walls left and right of the screen. The darker carpet was like getting new carpet and a projector upgrade all at once. Much less screen light reflected in the room with the darker carpet so the picture image pops more.
Attached Thumbnails
Click image for larger version

Name:	IMG_0398.jpg
Views:	62
Size:	198.6 KB
ID:	118314   Click image for larger version

Name:	IMG_0391.jpg
Views:	49
Size:	212.4 KB
ID:	118322   Click image for larger version

Name:	IMG_0393.jpg
Views:	50
Size:	173.9 KB
ID:	118346   Click image for larger version

Name:	IMG_0396.jpg
Views:	48
Size:	163.9 KB
ID:	118354  
J likes this.

Pre-Pro: Emotiva XMC-1, DSP: Mini DSP 2x4 balanced
Amplifier: Sunfire TGA7400, Lab Gruppen FP10000Q
Speakers: JTR Noesis 212HT (LCR), JTR Slant 8's (surrounds), 3 Orbit Shifter LFU's
Sources: PS3, HTPC, Dish Network
Projector: Epson 8350
Screen: Seymour XD AT 138" diagonal 16:9

Last edited by lbrown105; 06-15-2014 at 06:57 AM.
lbrown105 is offline  
post #9 of 12 Old 06-15-2014, 10:48 AM
AVS Special Member
 
rhed's Avatar
 
Join Date: Nov 2007
Posts: 1,419
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 237 Post(s)
Liked: 216
Quote:
Originally Posted by lbrown105 View Post
Here are some of the latest pics. Still need something (diffusive or absortive) on the front walls left and right of the screen. The darker carpet was like getting new carpet and a projector upgrade all at once. Much less screen light reflected in the room with the darker carpet so the picture image pops more.

WOW! I'm so jelly.. Nice room Ib.
rhed is offline  
post #10 of 12 Old 06-15-2014, 01:03 PM - Thread Starter
AVS Special Member
 
lbrown105's Avatar
 
Join Date: Nov 2011
Location: Milwaukee, WI
Posts: 1,017
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 243 Post(s)
Liked: 120
you are too kind Rhed. How much longer for your new mains?

Pre-Pro: Emotiva XMC-1, DSP: Mini DSP 2x4 balanced
Amplifier: Sunfire TGA7400, Lab Gruppen FP10000Q
Speakers: JTR Noesis 212HT (LCR), JTR Slant 8's (surrounds), 3 Orbit Shifter LFU's
Sources: PS3, HTPC, Dish Network
Projector: Epson 8350
Screen: Seymour XD AT 138" diagonal 16:9
lbrown105 is offline  
post #11 of 12 Old 06-15-2014, 04:02 PM
AVS Special Member
 
rhed's Avatar
 
Join Date: Nov 2007
Posts: 1,419
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 237 Post(s)
Liked: 216
Quote:
Originally Posted by lbrown105 View Post
you are too kind Rhed. How much longer for your new mains?
Didn't ask Jeff.. I know his busy. Plus I still have yet to order the brackets from the site you sent me. I guess I should order em tonight. And work on them this week.
rhed is offline  
post #12 of 12 Old 06-15-2014, 07:10 PM - Thread Starter
AVS Special Member
 
lbrown105's Avatar
 
Join Date: Nov 2011
Location: Milwaukee, WI
Posts: 1,017
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 243 Post(s)
Liked: 120
Quote:
Originally Posted by rhed View Post
Quote:
Originally Posted by lbrown105 View Post
you are too kind Rhed. How much longer for your new mains?
Didn't ask Jeff.. I know his busy. Plus I still have yet to order the brackets from the site you sent me. I guess I should order em tonight. And work on them this week.
post some pics as you start getting stuff set up. check out the house curve I set today. It is based on equal loudness profile. Been trying that vs a more flat approach. Loudness curve is winning!
Attached Thumbnails
Click image for larger version

Name:	6.15.14.jpg
Views:	5
Size:	45.6 KB
ID:	119674   Click image for larger version

Name:	6.15.14.(2).jpg
Views:	5
Size:	46.8 KB
ID:	119682  

Pre-Pro: Emotiva XMC-1, DSP: Mini DSP 2x4 balanced
Amplifier: Sunfire TGA7400, Lab Gruppen FP10000Q
Speakers: JTR Noesis 212HT (LCR), JTR Slant 8's (surrounds), 3 Orbit Shifter LFU's
Sources: PS3, HTPC, Dish Network
Projector: Epson 8350
Screen: Seymour XD AT 138" diagonal 16:9
lbrown105 is offline  
Reply Dedicated Theater Design & Construction

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off