Do I Need Acoustic Treatments in this Odd Shaped Room?

S

STucker

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Hello,

I have been reviewing several of the "Room Acoustics and Treatments" threads yesterday and today and I still need some assistance with advice for room treatments in my odd shaped room. The room is the above the garage with carpeting and kneewalls that extend partially down both sides of the room. I attaching photos for review.

The back of the room has 3 doors all at different depths from the seating - the closest door is 5.5 feet from the seating.
The knee wall on the left side extends from the front of the room (TV and window) 6.75 feet so the knee wall is the same on both sides of the room for only 6.75 feet.
The knee wall before the slope starts is 7.0 feet from the MLP.
I recently unfinished bass traps in the front corners to fix a null found with REW. As part of the effort and feedback from the REW forum, I also placed both subs in the left of the room.

Thanks in advance for any assistance.
 

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Sonnie Parker

Sonnie Parker

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Does it sound too lively in the room now? Is there echo?

With this odd-shaped room, I think you will probably have to experiment with placement if you feel it's needed. You might start with the first reflection points of the main front speakers. I wouldn't worry too much about the surround speakers.
 
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basscleaner

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The first step for any installation is to get as smooth as possible FR in low range. With accordance to you speakers this role belongs to subs only. The main difficulty is that subs placement may correlate with main speakers position and if subs will placed far from their places and generate distortion, therefore stereo picture will be blurred. Try to use all the opportunities to probe possible positions for subs including height changes round the front speakers placement. You should begin test without your DIY bass-traps, besides there are no powerful axial LF modes, due to "odd room geometry" and most likely, they are not needed at all. It doesn't mean, that there are no any LF modes at all. Tangent and oblique modes seems to me more powerful in the room. After you will find appropriate subs position (you better do it consequently one by one, trying to compensate disadvantages of each other) with EQ use, it will be time for the second step - to work with mid and high F ranges. I suggest, there is not any echo, because there are no any conditions for it due to complex room geometry. If you hear flutter echo - tell about this and we will tell you what to do. Then, if finishing material at wall and ceiling surfaces is rigid, hence your reverberation times will be to high in mid and maybe high ranges too. After you will define front speakers position you need to mount absorbing panels to play with first reflections values and RT60 (reverberation times) to understand the sound you like with accordance to your preferable sound ambience.
If you are familiar with acoustical modeling, I can advice CaraCAD (www.caracad.de) code, but must warn you, this may take more calculating times for complex geometry. REW is not suitable for it.
Your rear wall is better to drape with curtain, or even to listen with opened doors, if it will not bother to others in your house. This will influence to RT60 too as well as floor carpet. For now, that's all about the room treatment.
 
S

STucker

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Denon AVR x4400H
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Ascend Acoustics CBM-170 SE
Center Channel Speaker
Ascend Acoustics CMT-340c
Surround Speakers
Ascend Acoustics HTM-200 SE
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Definitive Technology 800
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Dual Rythmik Audio FVX15
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Hello - Sonnie and Basscleaner, thanks for the responses. I am sidelined for a few days with a bad upper respiratory infection. I should be able to get back to working on my room again after Thanksgiving. Thanks again for the assist.

Steve
 
Sonnie Parker

Sonnie Parker

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Music Hall Stealth Turntable
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Streaming Equipment
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Streaming Subscriptions
Lifetime Roon Subscription
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Other Equipment
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Zero Surge 8R15W-1
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Front Speakers
RTJ 410
Front Wide Speakers
JTR Neosis 110HT
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
JTR Neosis 210RT
Surround Back Speakers
JTR Neosis 210RT
Front Height Speakers
JTR Neosis 110HT-SL
Middle Height Speakers
JTR Neosis 110HT-SL
Rear Height Speakers
JTR Neosis 110HT-SL
Subwoofers
JTR Captivators - 4000ULF-TL x2 + 2400 x6
Other Speakers
Wharfedale Super Linton
Video Display Device
Sony 98X90L
Remote Control
AVA Cinema
Cables
AudioQuest - Various
THX PixelGen HDMI
Pangea Power Cables
Custom Cables
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
VTI Amp Stands for the Monoblocks
Solidsteel - S3 Series Amp Stand
Network/Internet
C-Spire 1Gig Fiber
Omada OC300 Controller
Omada ER8411 10G Router
Omada SG3218XP-M2 10G/2.5G Managed Switch
Omada SG2210XMP-M2 10G/2.5G Managed Switch
SilentPower LAN iPurifier Pro (for Nucleus One)
Headphones/IEMs
HIFIMAN HE1000se
Unique Melody Mest MKII
Headphone DAC/Amp
Eversolo DMP-A6
RME ADI-2 DAC FS
HIFIMAN Goldenwave Serenade
Whole House System
HEOS System
Home-150 Speaker x6
Samsung S9 Tablet w/ HEOS
Office/Study System
Office System
Dell Precision Computer
Roon Networked
Vanatoo Transparent One Encore Plus Speakers
Secondary/Additional Room System
AV Test Room System
NAD M33 Streaming DAC Amp
MartinLogan Motion XT F200
JTR Captivator RS1
miniDSP EARS
Zero Surge 8R15W-1
Zero Surge 2R20W
Dell Optiplex
Roon Networked
Additional Room System
Sunroom System
Denon AVR-X1800H HEOS Roon Ready Receiver
Zu Audio DW-6 Speakers
Dayton Audio IO8XTW Outdoor Speakers
Roon Networked
Dish Joey
JVC 37" TV
Additional Room System
Cabin System
Onkyo TX-SR805 Receiver
Infinity Primus P163 Speakers
RSL Outsiders Outdoor Speakers
Shield TV Pro
Sony 55" TV
Additional Room System
Vinyl Room
Accuphase E-280 Integrated Amp
Technics SL-1210GR2 Turntable
Ortofon 2M Blue Cartridge
KLH Model Three Speakers
Zero Surge 8R15W-1
Additional Room System
Barn Jam
Denon AVR-X1600H HEOS Roon Ready Receiver
Soundfield Custom Speakers
STucker said:
Hello - Sonnie and Basscleaner, thanks for the responses. I am sidelined for a few days with a bad upper respiratory infection. I should be able to get back to working on my room again after Thanksgiving. Thanks again for the assist.

Steve
Click to expand...
Sorry to hear this... hope you are feeling better soon. :T
 
B

basscleaner

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Join in Sonnie Parker wishes. Have a good news and future health!
 
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