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post #1 of 44 Old 10-21-2013, 07:14 AM - Thread Starter
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Note: Because AVS no longer supports the use of the Internet Explorer browser, some images in these posts may no longer be visible. All images should be visible using the Edge browser, and most other browsers. Safari on iOS devices may also have trouble displaying images, but the Chrome browser on iOS displays everything properly.

The purpose of this thread is to document my listening room, equipment, and the listening room's audio performance.  It is not intended for feedback, although if you have any questions, I will be happy to answer them.

Equipment List 

Listening Room Layout and Pictures
 
Note: Layout is not to scale.



My listening room in 3D (diagram courtesy of Roger Dressler). Note: Height and Wide speakers have since been removed since converting to Dirac Live.














































Room Treatments:
 
2'x4' Bass Traps (27 total, 4 RealTraps Mini-Traps, 21 GIK 244 Bass Traps, 2 GIK Monster Bass Traps)
5 GIK 244 bass traps have scatter plates (two each on side wall 1st reflection points, and one in rear corner)
2'x4' Full-Spectrum wall panels (2 total, GIK 242 Panels)

Last edited by AustinJerry; 08-25-2018 at 04:03 PM.
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post #2 of 44 Old 10-21-2013, 07:14 AM - Thread Starter
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Equipment List
 
Speakers (7.1 configuration) - see attachment
 
 
 
Marantz 8802A
MiniDSP DDRC-88A with Dirac Live, with BM Plug-in
MiniDSP 2x4 balanced
ATI AT527NC Class D Power Amp
Oppo UDP-203 UHD/HDR
DirecTV HR-54 Genie w/4TB eSATA drive
AppleTV 4K
Sony XBR75Z9F UHD/HDR/DV Flat Panel with AutoCal (New!)
SpectraCal C6 HDR2000 Colorimeter
Sanus LL22-B1 wall mount
Sonos Connect (ZP90) with Wyred4Sound Modification (Modification)
Wyred4Sound Remedy (Sonos ZP90 Re-clocker)
Emotiva CMX-6 Power Distribution System
APC UPS

 
How I spent my AV budget - see attachment
 
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post #3 of 44 Old 10-21-2013, 07:14 AM - Thread Starter
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Room Response Characteristics (updated August 6, 2018)
 
Measured using REW 5.019 beta 11, UMIK-1 USB mic.  Noise floor measured using RTA is 50dB.

Room correction is Dirac Live using MiniDSP DDRC-88A with bass management plug-in.























The screenshots below are from the Dirac Live Configuration Tool, and show the measured "average before" speaker responses, the Dirac custom target curve, and the calculated "average after" speaker responses. The custom target curve features a 6.5dB bass boost, the shape of which is suggested in a white paper authored by Sean Olive, Todd Welti, and Elisabeth McMullin titled “Listener Preferences for In-Room Loudspeaker and Headphone Target Responses”, dated October 2013, available for downloading here.













 
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post #4 of 44 Old 10-21-2013, 07:14 AM - Thread Starter
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Analysis - Benefits of Multiple Subwoofers
 
The purpose of this post is to show the interaction of multiple subs in the listening environment, and how careful placement and tuning can result in a significant improvement in bass response.  The subs used in this analysis are four Hsu Research ULS-15 sealed subs.  The subs are placed in the listening room as per the diagram in the first post in this thread.  The two front subs are at the 1/4 and 3/4 spots along the front wall, and the two rear subs are collocated at approximately the center of the back wall.  All four subs are gain-matched. A single output from a Marantz 8802A is used, connected to the Sub input on a MiniDSP 88A. The single sub output of the 88A is connected to one input on a MiniDSP 2x4, and the four subs are connected to the 2x4 outputs. The 2x4 is currently only providing time-alignment (no DSP). The layout is per this diagram:


 
The measurement of the subs independent of each other, and as front and rear pairs, reveals that the in-room response (without room correction) is not very smooth.
 
Individual subs:
 
 







Sub Pairs:
 
 



However, when all fours subs are driven at the same time, we start to see advantages in the summed response:
 
 

And Dirac Live room correction puts the final smoothing on the response:
 

 
And finally, combined response including center channel:
 

 
This analysis clearly shows the benefits of multiple subs in the listening environment.

To add some historical perspective, here is what the bass response looked like in October 2011, when I had only two subs, and no bass treatments in the listening room.


As you can see, it has been a long journey, and a successful one.
 

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post #5 of 44 Old 10-21-2013, 07:15 AM - Thread Starter
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Power Distribution

My listening room has two 20 Amp electrical circuits. Recently, I spent some time re-balancing the distribution of my equipment across the two circuits. Here is what I came up with:

Circuit 1

Marantz 8802A pre-pro
ATI 7-channel Class D power amp
MiniDSP DDRC-88A
MiniDSP 2x4
Apple TV 4K
Oppo UDP-203
Sonos Connect
Wyred4Sound Remedy Re-clocker (used with the Sonos Connect)

Circuit 2

HSU ULS-15 Subwoofers (4)
APC UPS, Protecting the following equipment:
- DirecTV HR54-700 DVR
- e-SATA Hard Drive for the DVR
- Sony XBR75X940D flat panel
- Linksys Wireless Bridge
- 8-port Network Hub
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post #6 of 44 Old 10-21-2013, 07:15 AM - Thread Starter
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Sony TV Autocalibration

In December, 2018, I added a Sony Master Series XBR75Z9F LED display to my setup. This is the first Sony TV to support SpectraCal's autocalibration using CalMAN software.

For the autocalibration, I purchased the SpectraCal C6 HDR2000 meter and CalMAN Home Enthusiast software. On the display, I downloaded the "CalMAN for Bravia" app from the Google Play store. This app communicates with CalMAN over the wireless network and facilitates "Direct Display Control", which allows CalMAN to directly adjust display settings. For the calibration, the test patterns were generated by the CalMAN software running on a Windows laptop with Intel graphics, connected to the display using an HDMI cable.

At the beginning of the autocalibration workflow, a "Pre-Calibration" measurement was taken:



After the autocalibration was complete, a "Post-Calibration" measurement was taken:




As the measurements show, the autocalibration results are excellent!

Last edited by AustinJerry; 01-10-2019 at 02:04 PM.
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post #7 of 44 Old 11-01-2013, 01:40 PM
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post #8 of 44 Old 11-09-2013, 01:31 PM
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That has to sound incredible.
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post #9 of 44 Old 11-19-2013, 11:32 AM
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Hi Jerry,

Just curious, why do you have the L/R at +/- 45 degrees? That's pretty wide (usually 30 is plenty). Considering you also have wide speakers (at +/- 65) it does not seem you'd be lacking for width cues.

Deadwood II Theater (Previous Deadwood Theater HTOM)
Anthem AVM 60 7.4.4; Classé SSP-800 PLIIx 7.4; MiniDSP OpenDRC-AN
Oppo UDP-203; Oppo BDP-93; Win7 media PC w/Roon+Kodi; Roku Ultra; DirecTV Genie
Adam Audio S3V/S3H LCR, KEF Ci200QS 4 srrnd, Tannoy Di6 DC 4 hts, Hsu ULS-15 4 subs
JVC RS520; Stewart Cima Neve screen 125" diag 2.35:1, MLP at 115"
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post #10 of 44 Old 11-19-2013, 12:50 PM - Thread Starter
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Quote:
Originally Posted by Roger Dressler View Post

Hi Jerry,

Just curious, why do you have the L/R at +/- 45 degrees? That's pretty wide (usually 30 is plenty). Considering you also have wide speakers (at +/- 65) it does not seem you'd be lacking for width cues.

 

Roger,

 

 

Perhaps you are miss-interpreting my drawing.

 

 

The front speakers are at an angle of 27.3 degrees, and the Wides are at an angle of 51.2 degrees, which is actually a narrower angle than the recommendation.

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post #11 of 44 Old 11-19-2013, 02:04 PM
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Quote:
Originally Posted by AustinJerry View Post

Roger,

Perhaps you are miss-interpreting my drawing.
Oops, yes, I did not notice the angles! I just plopped it into Corel and measured them. The drawing is, as they say, "not to scale." wink.gif

Sorry for my confusion.

Deadwood II Theater (Previous Deadwood Theater HTOM)
Anthem AVM 60 7.4.4; Classé SSP-800 PLIIx 7.4; MiniDSP OpenDRC-AN
Oppo UDP-203; Oppo BDP-93; Win7 media PC w/Roon+Kodi; Roku Ultra; DirecTV Genie
Adam Audio S3V/S3H LCR, KEF Ci200QS 4 srrnd, Tannoy Di6 DC 4 hts, Hsu ULS-15 4 subs
JVC RS520; Stewart Cima Neve screen 125" diag 2.35:1, MLP at 115"
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post #12 of 44 Old 11-19-2013, 03:01 PM - Thread Starter
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No harm done.  It is just a PowerPoint drawing, so no way to draw it to scale.  I used to use AutoCAD when I was working, but don't want to spend the money for a personal license.  If you know of a good consumer-class (read:  inexpensive or free) CAD program, I would welcome the recommendation.  In the meantime, I determine angles by using a spreadsheet that calculates the angles from the distances of the legs of the triangle.

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post #13 of 44 Old 11-19-2013, 05:28 PM
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Quote:
Originally Posted by AustinJerry View Post

No harm done.  It is just a PowerPoint drawing, so no way to draw it to scale.  I used to use AutoCAD when I was working, but don't want to spend the money for a personal license.  If you know of a good consumer-class (read:  inexpensive or free) CAD program, I would welcome the recommendation.  In the meantime, I determine angles by using a spreadsheet that calculates the angles from the distances of the legs of the triangle.
If you like to have the option for 3D rendering, try SweetHome3D. I found it much easier than Sketchup.

attachment.php?attachmentid=167670&d=1266632936

Deadwood II Theater (Previous Deadwood Theater HTOM)
Anthem AVM 60 7.4.4; Classé SSP-800 PLIIx 7.4; MiniDSP OpenDRC-AN
Oppo UDP-203; Oppo BDP-93; Win7 media PC w/Roon+Kodi; Roku Ultra; DirecTV Genie
Adam Audio S3V/S3H LCR, KEF Ci200QS 4 srrnd, Tannoy Di6 DC 4 hts, Hsu ULS-15 4 subs
JVC RS520; Stewart Cima Neve screen 125" diag 2.35:1, MLP at 115"
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post #14 of 44 Old 11-20-2013, 10:00 PM
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Here's your room translated to SweetHome3D



The project's file: Jerrys Room.zip 144k .zip file
Attached Files
File Type: zip Jerrys Room.zip (143.6 KB, 260 views)
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Deadwood II Theater (Previous Deadwood Theater HTOM)
Anthem AVM 60 7.4.4; Classé SSP-800 PLIIx 7.4; MiniDSP OpenDRC-AN
Oppo UDP-203; Oppo BDP-93; Win7 media PC w/Roon+Kodi; Roku Ultra; DirecTV Genie
Adam Audio S3V/S3H LCR, KEF Ci200QS 4 srrnd, Tannoy Di6 DC 4 hts, Hsu ULS-15 4 subs
JVC RS520; Stewart Cima Neve screen 125" diag 2.35:1, MLP at 115"
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post #15 of 44 Old 11-21-2013, 05:46 AM - Thread Starter
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Wow, I am impressed.  I need to download that software.  Thanks!

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post #16 of 44 Old 12-04-2013, 10:52 AM
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That is great. I am building mine now in Sweet Home it rocks!

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post #17 of 44 Old 12-31-2013, 12:48 PM
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Quote:
Originally Posted by Roger Dressler View Post

Here's your room translated to SweetHome3D



The project's file: Jerrys Room.zip 144k .zip file

Quote:
Originally Posted by AustinJerry View Post

Wow, I am impressed.  I need to download that software.  Thanks!

I am IMPRESSED as well!!! Sweet, indeed!

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"I like the future, I'm in it." F. Theater
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post #18 of 44 Old 12-31-2013, 02:43 PM - Thread Starter
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Yes, I still owe it to Roger to learn how to use that software. So many things on the to-do list!
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post #19 of 44 Old 01-23-2014, 01:43 PM
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I have finished my drawings. Even put my wife in one. Take a look. 

 

I have posted the source files as well.

 

http://files.snowsoftware.com/files.zip 

 

 

 

 

 

 

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post #20 of 44 Old 01-30-2014, 05:50 AM
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Great Looking (& sounding ) room, came here from the link in your sig & your suggestion in the REW thread about a month ago - trying to get caught up as we speak so I may join the discussion.. just started measuring a few weeks ago after a lot of lurking & learning..

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post #21 of 44 Old 03-18-2014, 07:22 PM
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Very good set-up ! I like it.
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post #22 of 44 Old 05-22-2014, 02:54 PM
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Great setup and seeing those graphs is very helpful and encouraging. Nice to see such good response after all the hard work you put in.

Big thanks for recommending the sweethome3d program... what great software. I was able to model the before and after of my room in no time. So much better than google sketch. Thanks again.

 


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My 6.4.4 Living Room HT
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post #23 of 44 Old 06-04-2014, 09:02 AM
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Hey Austin, Nice work with the speakers! Just wondering if you can help me out with what you think is the best settings for 3D blu rays on the Sony x900.

Cheers Mate!!!
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post #24 of 44 Old 06-10-2014, 08:52 AM
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Quote:
Originally Posted by Roger Dressler View Post

If you like to have the option for 3D rendering, try SweetHome3D. I found it much easier than Sketchup.

attachment.php?attachmentid=167670&d=1266632936

Going to have to try this software as I have gotten some comments about my build thread not having a layout. Thanks!
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Quote:
Originally Posted by AustinJerry View Post
Yes, I still owe it to Roger to learn how to use that software. So many things on the to-do list!
Just saw your dedicated thread now. Very nice. Do you by any chance have REW graphs (frequency/ETC/...) before/after treatment to show the difference they brought?

Also where in the pics you have following placed
2'x4' Full-Spectrum wall panels (5 total, GIK 242 Panels)
2 GIK Monster Bass Traps

thx.

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post #26 of 44 Old 01-27-2015, 02:16 PM
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Damn AustinJerry that is one beautiful setup you have. I would have bought the X900A myself but went with its 55inch sibling the 55W900A which like the X900A is a beautiful tv. IMHO the 2 best tv's made by Sony. Again though very nice setup.
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Beautiful set up.

I was wondering if you might be able to share your process in choosing acoustic treatments. I am in the early stages of planning acoustic treatments, and am trying to figure out what I need.

Did you try to place as many bass traps as you could, given that you have 4 potent subs, or did you follow the REW measurements, or something else?
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post #28 of 44 Old 02-16-2015, 05:13 AM - Thread Starter
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Quote:
Originally Posted by Spazdoc View Post
Beautiful set up.

I was wondering if you might be able to share your process in choosing acoustic treatments. I am in the early stages of planning acoustic treatments, and am trying to figure out what I need.

Did you try to place as many bass traps as you could, given that you have 4 potent subs, or did you follow the REW measurements, or something else?
Treatments accomplish two things--they reduce bass resonance, and they tame reflections in the spectral region. The guidelines for treatments to control bass resonance are to 1) choose treatments designed specifically for the longer hass frequencies (which are generally thicker), and 2) to place the treatments in the most effective locations, at the intersection of multiple surfaces, e,g. room corners, wall to ceiling, etc. Also, the more traps, the more effective the resonance control.

Treatments for spectral reflections are different. The treatments themselves must be full-spectrum treatments, and they are placed at spots specifically associated with reflections. You can analyze room reflections using the REW ETC measurement.

There are threads here on AVS that provide more specific guidance on effective room treatment.
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post #29 of 44 Old 02-16-2015, 08:27 AM
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Quote:
Originally Posted by AustinJerry View Post

Treatments for spectral reflections are different. The treatments themselves must be full-spectrum treatments, and they are placed at spots specifically associated with reflections. You can analyze room reflections using the REW ETC measurement.

There are threads here on AVS that provide more specific guidance on effective room treatment.
Thanks. The trouble with many of the posts on here is that often the advice is specific for a that applicaiton, rather than unifying ideas. Although I have been reading up on hometheatershack, the guide that you have in your sig ( Getting Started with REW: A Step-by-Step Guide ) has been the most helpful and concise guide for using and understanding the REW I could find. Thank you very much for putting it together.
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post #30 of 44 Old 04-01-2015, 10:46 PM
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Jerry,
A technical question for you. To calculate the LF/RF speaker angles, did you do the following. Assuming adjacent right angle triangles at MLP on the chart in post #1 , did you compute:

Adjacent = 108"/2 = 54" (i.e. 1/2 the distance between your LF and RF speakers, assuming your center channel and MLP represents 0 degrees)
Hypotenuse = 108" (distance from center of LF to MLP)

Angle (360 degrees) = Inverse cosine of (54"/108")= 60
To put on a +/- 180 degrees scale, that becomes 60/2 = 30 degrees


Note that this is the physical angle, not complicated by things like differences in speaker level or calculation of electronic delays.

I think this is right, but just confirming to do some room brainstorming of my own.

Audio Gear: Trinnov Altitude 32 (24 channel), NAD M27 amps (3)
Video: JVC RS600, Seymour 100" UF Screen, Lumagen Radiance Pro 4444 (coming soon)
Speakers: PSB Imagine T3 LCR, Imagine T Wides/Side Surround 1, T2 Side Surrounds, Imagine XB rears, Image B6 screens, PSB CS1000 ceilings (6), HSU ULS-15 Mk 2 subs (4) - 13.4.6
HAA HT1 and HT2 Certification

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