Custom DIY diffuser panels...

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
So I posted an update on the differences... I won't dupe them here, but you can see the ETC graph comparisons here:


I'll admit... I did not have my initial ETC and Impulse graphs set properly... I don't think. There appears to be more of a difference than I originally thought... I think... maybe... perhaps.
 

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
Here are the custom absorption panels I built this afternoon... 91" tall x 44" wide x 7.25" deep... with the heavy Roxul R30 insulation.

42046


42047
 

pratul

Member
Joined
Feb 7, 2021
Messages
140
Location
Johns Creek GA
My AV System  
Preamp, Processor or Receiver
Anthem AVM 70
Main Amp
Anthem MCA 20
Additional Amp
Anthem MCA 50
Other Amp
Monoprice Monolith 7x200
Universal / Blu-ray / CD Player
Oppo
Front Speakers
M&K S-150 THX
Center Channel Speaker
M&K S-150 THX
Surround Speakers
M&K SS-150 THX
Surround Back Speakers
M&K SS-250 THX
Front Height Speakers
Monoprice Caliber
Rear Height Speakers
Monoprice Caliber
Subwoofers
M&K MX5000 M2 x2 + SVS PB-16 Ultra x 2
Video Display Device
JVC RS40U
Screen
Stewart 120" Greyhawk
Streaming Equipment
ROKU Ultra2
Streaming Subscriptions
HBO Max, Amazon Prime, Netflix, Xfinity
Satellite System
People still use satellite systems? ;)
Looks very well made! Can't wait to see a before and after REW analysis.
BTW: I don't like you any more :( You are an Alabama fan :( My son went to Auburn.
Just kidding :)
 

pratul

Member
Joined
Feb 7, 2021
Messages
140
Location
Johns Creek GA
My AV System  
Preamp, Processor or Receiver
Anthem AVM 70
Main Amp
Anthem MCA 20
Additional Amp
Anthem MCA 50
Other Amp
Monoprice Monolith 7x200
Universal / Blu-ray / CD Player
Oppo
Front Speakers
M&K S-150 THX
Center Channel Speaker
M&K S-150 THX
Surround Speakers
M&K SS-150 THX
Surround Back Speakers
M&K SS-250 THX
Front Height Speakers
Monoprice Caliber
Rear Height Speakers
Monoprice Caliber
Subwoofers
M&K MX5000 M2 x2 + SVS PB-16 Ultra x 2
Video Display Device
JVC RS40U
Screen
Stewart 120" Greyhawk
Streaming Equipment
ROKU Ultra2
Streaming Subscriptions
HBO Max, Amazon Prime, Netflix, Xfinity
Satellite System
People still use satellite systems? ;)

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
BTW: Are you going to cover the back side of the panel to stop fibers from falling out?
Probably not... if I leave them there, shouldn't much fall out, if any. The good thing is it's not fiberglass. When moving them into the room and bouncing them around, nothing fell out that I could tell.
 

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand

ddude003

Active Member
Joined
Aug 13, 2017
Messages
718
Location
Somewhere Northeast of Kansas City Missouri
My AV System  
Preamp, Processor or Receiver
PrimaLuna Dialogue Premium TubePre (2 channel+sub)
Main Amp
McIntosh MC152 SS Amp (2 channel)
Additional Amp
Yamaha RX-A850 Pro (the other 5 channels lol)
Computer Audio
MacBook Pro, Custom i7 7700k De-lid build, Audirvana+, LiquidSonics, SoX
DAC
Chord Electronics Ltd. Qutest
Universal / Blu-ray / CD Player
LG Blue-Ray
Front Speakers
Martin Logan ElectroMotion ESL
Center Channel Speaker
Martin Logan Motion C2
Surround Speakers
Martin Logan Motion 4
Surround Back Speakers
Martin Logan Motion 4 (yes, another set of these)
Subwoofers
Martin Logan Dynamo 700
Other Speakers or Equipment
Cifte 12AU7 NOS & Genalex Gold Lion Tubes in Pre
Video Display Device
Samsung The Premiere LSP7T UST Laser Projector
Screen
Elite Screens Aeon CLR3 0.8 Gain 103-inch
Remote Control
PrimaLuna & Lumin iApp
Streaming Equipment
Lumin U1 Mini Streamer/Transport
Streaming Subscriptions
Roon & QoBuz Studio Premier, Amazon Prime & Netflix
Other Equipment
ThrowRug, SaddleBlankets, WideBand & BaseTraps...
Very interesting... 7.5 dBFS difference... Diffusion is a little wild and crazy... Absorption a little more reserved...

Which one sounds better to your ears?
 

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
Really hard to say at this point. I can't auto switch them, so it's somewhat difficult for me to say one is better than the other... they both sound good. Both image well and have that big sound stage.
 

ddude003

Active Member
Joined
Aug 13, 2017
Messages
718
Location
Somewhere Northeast of Kansas City Missouri
My AV System  
Preamp, Processor or Receiver
PrimaLuna Dialogue Premium TubePre (2 channel+sub)
Main Amp
McIntosh MC152 SS Amp (2 channel)
Additional Amp
Yamaha RX-A850 Pro (the other 5 channels lol)
Computer Audio
MacBook Pro, Custom i7 7700k De-lid build, Audirvana+, LiquidSonics, SoX
DAC
Chord Electronics Ltd. Qutest
Universal / Blu-ray / CD Player
LG Blue-Ray
Front Speakers
Martin Logan ElectroMotion ESL
Center Channel Speaker
Martin Logan Motion C2
Surround Speakers
Martin Logan Motion 4
Surround Back Speakers
Martin Logan Motion 4 (yes, another set of these)
Subwoofers
Martin Logan Dynamo 700
Other Speakers or Equipment
Cifte 12AU7 NOS & Genalex Gold Lion Tubes in Pre
Video Display Device
Samsung The Premiere LSP7T UST Laser Projector
Screen
Elite Screens Aeon CLR3 0.8 Gain 103-inch
Remote Control
PrimaLuna & Lumin iApp
Streaming Equipment
Lumin U1 Mini Streamer/Transport
Streaming Subscriptions
Roon & QoBuz Studio Premier, Amazon Prime & Netflix
Other Equipment
ThrowRug, SaddleBlankets, WideBand & BaseTraps...
I know... Sometimes we can't tell a difference even when REW shows you the difference... And sometime we can hear a difference even though REW can't show us the difference...

Have you tired both??? The absorber over the diffuser??? That might prove interesting too...

By the way... What amplifiers are you running now??? :coocoo:
 
Last edited:

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
The absorption panel is covering the diffusor right now.
 

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand

ddude003

Active Member
Joined
Aug 13, 2017
Messages
718
Location
Somewhere Northeast of Kansas City Missouri
My AV System  
Preamp, Processor or Receiver
PrimaLuna Dialogue Premium TubePre (2 channel+sub)
Main Amp
McIntosh MC152 SS Amp (2 channel)
Additional Amp
Yamaha RX-A850 Pro (the other 5 channels lol)
Computer Audio
MacBook Pro, Custom i7 7700k De-lid build, Audirvana+, LiquidSonics, SoX
DAC
Chord Electronics Ltd. Qutest
Universal / Blu-ray / CD Player
LG Blue-Ray
Front Speakers
Martin Logan ElectroMotion ESL
Center Channel Speaker
Martin Logan Motion C2
Surround Speakers
Martin Logan Motion 4
Surround Back Speakers
Martin Logan Motion 4 (yes, another set of these)
Subwoofers
Martin Logan Dynamo 700
Other Speakers or Equipment
Cifte 12AU7 NOS & Genalex Gold Lion Tubes in Pre
Video Display Device
Samsung The Premiere LSP7T UST Laser Projector
Screen
Elite Screens Aeon CLR3 0.8 Gain 103-inch
Remote Control
PrimaLuna & Lumin iApp
Streaming Equipment
Lumin U1 Mini Streamer/Transport
Streaming Subscriptions
Roon & QoBuz Studio Premier, Amazon Prime & Netflix
Other Equipment
ThrowRug, SaddleBlankets, WideBand & BaseTraps...

ddude003

Active Member
Joined
Aug 13, 2017
Messages
718
Location
Somewhere Northeast of Kansas City Missouri
My AV System  
Preamp, Processor or Receiver
PrimaLuna Dialogue Premium TubePre (2 channel+sub)
Main Amp
McIntosh MC152 SS Amp (2 channel)
Additional Amp
Yamaha RX-A850 Pro (the other 5 channels lol)
Computer Audio
MacBook Pro, Custom i7 7700k De-lid build, Audirvana+, LiquidSonics, SoX
DAC
Chord Electronics Ltd. Qutest
Universal / Blu-ray / CD Player
LG Blue-Ray
Front Speakers
Martin Logan ElectroMotion ESL
Center Channel Speaker
Martin Logan Motion C2
Surround Speakers
Martin Logan Motion 4
Surround Back Speakers
Martin Logan Motion 4 (yes, another set of these)
Subwoofers
Martin Logan Dynamo 700
Other Speakers or Equipment
Cifte 12AU7 NOS & Genalex Gold Lion Tubes in Pre
Video Display Device
Samsung The Premiere LSP7T UST Laser Projector
Screen
Elite Screens Aeon CLR3 0.8 Gain 103-inch
Remote Control
PrimaLuna & Lumin iApp
Streaming Equipment
Lumin U1 Mini Streamer/Transport
Streaming Subscriptions
Roon & QoBuz Studio Premier, Amazon Prime & Netflix
Other Equipment
ThrowRug, SaddleBlankets, WideBand & BaseTraps...

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
I working on a measurement system now... maybe once I get that done I can do some objective reviews of amps, and my personal opinion of them.
 

Trdat

Member
Joined
Nov 6, 2019
Messages
78
I was looking for Arqens build plan on this type of diffuser the other day and it's disappeared off the net. Do you have specifics? Just a basic outline on each depth and height? What program did you use to design it?

Secondly, do you have any reason to place them behind your speakers. Would the diffuser receive either reflections or direct sound at that point?
 

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
I was looking for Arqens build plan on this type of diffuser the other day and it's disappeared off the net. Do you have specifics? Just a basic outline on each depth and height? What program did you use to design it?

Secondly, do you have any reason to place them behind your speakers. Would the diffuser receive either reflections or direct sound at that point?
Yes... the first post as the measurements to use. I used 1x4's and plywood as described earlier. There was no program to design it... it was already designed... see first post in this thread.

I placed them behind the speaker because I have dipole electrostatic MartinLogan speakers that produce direct sound towards the rear. However, I prefer the absorption panels (again, shown in this thread) over the diffusion panels in my room.
 

ddude003

Active Member
Joined
Aug 13, 2017
Messages
718
Location
Somewhere Northeast of Kansas City Missouri
My AV System  
Preamp, Processor or Receiver
PrimaLuna Dialogue Premium TubePre (2 channel+sub)
Main Amp
McIntosh MC152 SS Amp (2 channel)
Additional Amp
Yamaha RX-A850 Pro (the other 5 channels lol)
Computer Audio
MacBook Pro, Custom i7 7700k De-lid build, Audirvana+, LiquidSonics, SoX
DAC
Chord Electronics Ltd. Qutest
Universal / Blu-ray / CD Player
LG Blue-Ray
Front Speakers
Martin Logan ElectroMotion ESL
Center Channel Speaker
Martin Logan Motion C2
Surround Speakers
Martin Logan Motion 4
Surround Back Speakers
Martin Logan Motion 4 (yes, another set of these)
Subwoofers
Martin Logan Dynamo 700
Other Speakers or Equipment
Cifte 12AU7 NOS & Genalex Gold Lion Tubes in Pre
Video Display Device
Samsung The Premiere LSP7T UST Laser Projector
Screen
Elite Screens Aeon CLR3 0.8 Gain 103-inch
Remote Control
PrimaLuna & Lumin iApp
Streaming Equipment
Lumin U1 Mini Streamer/Transport
Streaming Subscriptions
Roon & QoBuz Studio Premier, Amazon Prime & Netflix
Other Equipment
ThrowRug, SaddleBlankets, WideBand & BaseTraps...

Trdat

Member
Joined
Nov 6, 2019
Messages
78
Yes... the first post as the measurements to use. I used 1x4's and plywood as described earlier. There was no program to design it... it was already designed... see first post in this thread.

I placed them behind the speaker because I have dipole electrostatic MartinLogan speakers that produce direct sound towards the rear. However, I prefer the absorption panels (again, shown in this thread) over the diffusion panels in my room.
Apologise, yes on your initial post has a pretty detailed layout of the build thanks.

I don't know much about the Martin Logan's wasn't aware they radiate backwards, now that I know it makes sense. Very interesting about you preferring the absorption perhaps your room is very small? Do you know the average time gap from the speaker to the diffuser then back to the listening position?
 

Trdat

Member
Joined
Nov 6, 2019
Messages
78
Thanks so much for the link.

The plans do not exist anymore, It seems he doesn't send them through like he did before, I tried hard hunting them down. I have the fractal plan but not the stepped diffuser so appreciate it you sending them through.
 

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
Apologise, yes on your initial post has a pretty detailed layout of the build thanks.

I don't know much about the Martin Logan's wasn't aware they radiate backwards, now that I know it makes sense. Very interesting about you preferring the absorption perhaps your room is very small? Do you know the average time gap from the speaker to the diffuser then back to the listening position?
No problem at all.... and check out this thread with impulse and ETC measurements between absorption and diffusion... posts 32-33 ... https://www.avnirvana.com/threads/martinlogan-renaissance-15a-speaker-measurements-and-room-influence.8391/

My room is 19.5ft wide x 23.5ft deep and about 8.5ft high.

I've read in various places that absorption will generally give tighter and more focused imaging, but perhaps diffusion gives you a larger soundstage. I don't think diffusion really helps in my setup because the huge size of the 15A's produce an enormous soundstage even with absorption, but it also improves the imaging.
 

Trdat

Member
Joined
Nov 6, 2019
Messages
78
No problem at all.... and check out this thread with impulse and ETC measurements between absorption and diffusion... posts 32-33 ... https://www.avnirvana.com/threads/martinlogan-renaissance-15a-speaker-measurements-and-room-influence.8391/

My room is 19.5ft wide x 23.5ft deep and about 8.5ft high.

I've read in various places that absorption will generally give tighter and more focused imaging, but perhaps diffusion gives you a larger soundstage. I don't think diffusion really helps in my setup because the huge size of the 15A's produce an enormous soundstage even with absorption, but it also improves the imaging.
You could place diffusion in such a way that secondary reflections get to it and get back to listening position. My next goal is to learn how to do this, it still should work in a small room.

One quick question, would particle board with the typical laminate cover(kitchen bench top material) work for the stepped diffusor? I know solid wood is best but the ease to cut kitchen chipwood or MDF at a factory would help a lot with my build and the overall look. I am presuming the laminated layer would be reflective enough. Does anyone have any idea if it's a wrong move or should work fine?
 

Sonnie

Senior Admin
Staff member
Thread Starter
Joined
Apr 2, 2017
Messages
4,422
Location
Alabama
My AV System  
Preamp, Processor or Receiver
Monolith HTP-1 Processor (Movies and Surround)
Main Amp
Sanders Sound System Magtech (Dual Amps)
Additional Amp
Emotiva XPA-Eleven
Computer Audio
Intel NUC w/ Roon ROCK
DAC
miniDSP SHD (Two-Channel Music Only)
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
MartinLogan Renaissance ESL 15A
Center Channel Speaker
MartinLogan Focus C-18
Surround Speakers
MartinLogan EFX Surrounds
Surround Back Speakers
MartinLogan ElectroMotion ESL
Front Height Speakers
MartinLogan EM-IC
Rear Height Speakers
MartinLogan EM-IC
Subwoofers
SVS SB16-Ultra x4 (music) + PB16-Ultra x2 (movies)
Other Speakers or Equipment
VTI Amp Stands for the Magtechs
Video Display Device
JVC DLA-NX9
Screen
Elite 128" Screen
Remote Control
Universal MX-890
Streaming Equipment
Roku Ultra
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Salamander Synergy Equipment Stand
I don't think the material would matter that much as long as it is reflective.
 

VinceHoffman

Member
Joined
Mar 20, 2020
Messages
25
Location
Ontario, Canada
My AV System  
Preamp, Processor or Receiver
Anthem AVM60 or Coincident Statement Linestage
Main Amp
N/A
Additional Amp
2x Meridian 557 for Atmos
DAC
PS Audio Directstream DAC
Universal / Blu-ray / CD Player
Oppomod UDP-203 & Jay's Audio CDT2 Mk II transport
Front Speakers
ATC SCM20ASL Pro mkII on Skylan 4 post stands
Center Channel Speaker
ATC SCM20ASL Pro mkII on Skylan 4 post stand
Surround Speakers
ATC SCM20ASL Pro mkII on Skylan 4 post stand
Front Height Speakers
ATC SCM12i Pro hung from K&M ceiling mounts
Rear Height Speakers
ATC SCM12i Pro hung from K&M ceiling mounts
Subwoofers
4x Seaton Sound Submersive HP
Other Speakers or Equipment
DSPeaker Anti-mode 2.0 for sub modal EQ & delay
Video Display Device
JVC DLA-990 & Isco 3L Ana-lens on motorized sled
Screen
Seymour Screen Excellence 4k 2.37:1 Motorized
Streaming Equipment
Apple TV 4k
Streaming Subscriptions
Apple+, CraveTV, Disney+, Netflix, and PrimeTV
Other Equipment
Oracle Delphi VI Reference/Turbo PS/SME V/Benz LP-S turntable, Foundation Research V5 phono-stage, & JL Audio CR-1 electronic subwoofer crossover
MDF would be fine @Trdat . Even particle/furniture board should be OK provided that the exposed cut faces of the lumber weren't too rough or full of air cavities.
 
Top Bottom