It's not so much about being right, as it is about being able to accept the possibility that you are not.This is the reason why I believe Spedge left.^^^^^^Yawl can have it as it dont effect me none as my DML panels sound fantastic.
Eric
Audiofrenzy.... having good sounding panels is an opinion, you are aware of that I hope. because other audio folks would say no panels on the face of the planet sounds good ! none, nada, zip, they all sound bad, clean your ears out.
So when you suggest your way is right because your panels sound good, please be aware that that is an opinion.
peace out......
So when you suggest your way is right because your panels sound good, please be aware that that is an opinion.
peace out......
Too true. Mind you maybe you should buy some socks but currently I'm not wearing any either.
Working on it. I have a friend that uses it and my extensive CAD experience is in mechanisms and medical devices not vibrational analysis and FEA. So as you suggest may have to take a simpler approach. Also I have a number of projects, not speakers, underway so when the Misses finds out about this one I might be leaving this earth.
I may have to finish the greenhouse that I started two years ago to placate her so that will slow me down.Listen up EVERYONE, please pay attention Audiofrenzy is speaking, so listen up good, or you'll get an ear bashing...... Audiofrenzy has good sounding panels because other people told him so, and they can't be wrong cause they agree with Audiofrenzy's opinion ...... and any more than 1 opinion makes a fact don't you know, but any one else who disagrees with Audiofrenzy is wrong, so listen up... it's Audiofrenzies way... or the highway.... hoy you in the corner... stop pick'n your nose.
No it was a censer thank you for the post. I think the thread has enough drama. I was going to use BMRs alone before discovering DMLs for an application I have and may go back to them. That is why I posted the test data on the Philharmonic BMR speakers in an earlier post in this thread.You must think that this is the first time I've ever shown parts of my design and work. Which proves you arent paying attention to what I say. You just came to jump on the bandwagon of drama.
Also that is not one of my "PROVEN" designs.....its just an experimental one that may or may not work.
https://www.diyaudio.com/community/...s-as-a-full-range-speaker.272576/post-7373746
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Not enough caps too take you seriously.Listen up EVERYONE, please pay attention Audiofrenzy is speaking, so listen up good, or you'll get an ear bashing...... Audiofrenzy has good sounding panels because other people told him so, and they can't be wrong cause they agree with Audiofrenzy's opinion ...... and any more than 1 opinion makes a fact don't you know, but any one else who disagrees with Audiofrenzy is wrong, so listen up... it's Audiofrenzies way... or the highway.... hoy you in the corner... stop pick'n your nose.
DML's used as tweeters crossed at 4,500 hz
the guys blog post is here:
https://www.engineeringradio.us/blog/2021/12/distributed-mode-loudspeakers/
the guys blog post is here:
https://www.engineeringradio.us/blog/2021/12/distributed-mode-loudspeakers/
Distributed mode loudspeakers demonstration
Hi everyone
Do you have any particular preference for which amplifier to use when playing DML?
TPA3255, IR2092, LM1875, vacuum tube...etc.
Do you have any special recommendations and reasons?
If a DSP pre-amplifier is used, is there any special difference in the type of post-amplifier used?
I personally think it’s because DML uses DSP for EQ adjustment.
It seems that the power amplifier will not be much different as long as it is Class D, right?
Thank you for your sharing and replies
Do you have any particular preference for which amplifier to use when playing DML?
TPA3255, IR2092, LM1875, vacuum tube...etc.
Do you have any special recommendations and reasons?
If a DSP pre-amplifier is used, is there any special difference in the type of post-amplifier used?
I personally think it’s because DML uses DSP for EQ adjustment.
It seems that the power amplifier will not be much different as long as it is Class D, right?
Thank you for your sharing and replies
Audiofrenzy, it is about one year I haven't updated the history file. Could you post here the links to previous posts (this thread or from other forums) where you shown your design?You must think that this is the first time I've ever shown parts of my design and work. Which proves you arent paying attention to what I say. You just came to jump on the bandwagon of drama.
Also that is not one of my "PROVEN" designs.....its just an experimental one that may or may not work.
Christian
Cheap class D board like TPA3116 tweaked as described in other threads of this forum (gain reduction, good capacitors and volume) do the job for me. For now I haven't found the DSP board...sometime, I think to try a fanless PC under Linux + Camilla + a 5.1 USB sound card. There are also threads about that... but need to find additional time. Probably in a next future.
Christian
The main driver of efficiency is the density of the material. JMC board is made of spruce used for piano sound board (390 to 460kg/m³). The thickness drives the lowest frequency reachable (1s mode).
Guys, from the in-depth quick scan ( ) I've done of recent posts, it would seem that those people who load "sound clips" of their "DML panels" but who post vids of their fkkin carpets instead, are either very ashamed of the construction of their work, or they are conspiracy theorists of the highest order. Of course, sufferers of the DK effect, besides valuing their opinions over-much, also tend to use emoticons over-much. It's easy to tell who they are.
Any school boy can take a video of a carpet while playing their highly EQ'd, cheap little computer monitors and claim it's their "latest design". Yawn... It's also the type of person who would one day take a vid of their speakers but who would actually be playing different speakers in the back ground. It's also the type of guy who thinks that a cell-phone recording honestly reproduces an accurate sound of something playing through a recorded interface, and who thinks that their ears are an objective measurement of a piece of engineering art.
Maybe it's time to apply an entrance exam to get rid of wanna-be speaker builders but who don't wanna-learn and who think that their baseless and 90% incorrect OPINIONS outweigh decent engineering and science and experience?
I find the Ignore facility here works quite well.
) I've done of recent posts, it would seem that those people who load "sound clips" of their "DML panels" but who post vids of their fkkin carpets instead, are either very ashamed of the construction of their work, or they are conspiracy theorists of the highest order. Of course, sufferers of the DK effect, besides valuing their opinions over-much, also tend to use emoticons over-much. It's easy to tell who they are. Any school boy can take a video of a carpet while playing their highly EQ'd, cheap little computer monitors and claim it's their "latest design". Yawn... It's also the type of person who would one day take a vid of their speakers but who would actually be playing different speakers in the back ground. It's also the type of guy who thinks that a cell-phone recording honestly reproduces an accurate sound of something playing through a recorded interface, and who thinks that their ears are an objective measurement of a piece of engineering art.
Maybe it's time to apply an entrance exam to get rid of wanna-be speaker builders but who don't wanna-learn and who think that their baseless and 90% incorrect OPINIONS outweigh decent engineering and science and experience?
I find the Ignore facility here works quite well.
I designed, fabricated, and installed a 16' X 9' curved steam bent wooden shoji screen light diffusor for under a 4' X 16' skylight in my home in 2009. I want to put speakers that have wide horizontal diffusion pattern hidden behind them. I have been studying the work of Carlsson and Larson of Larson speakers where sound is deliberately non-focused but detailed and stereo. BMRs seemed excellent but DMLs might be even better with some DSP. I will replace my fiberglass shoji "paper" with sound transmitting cloth.
Please forgive my dyslexic typing, it's been a problem all my life.
Speaker cloth for the shoji 48" wide. Plenty of candidates here as it needs to transmit light as well.
https://www.sailrite.com/
Yes I know BMRs are inexpensive and can supplemented with conventional HF and LF drivers, as in the Philharmonic BMR speaker I posted. I may start there for the house because wiring, amplification, DSP and cloth can be installed and used for them with very good sound. Still I am intrigued that the dispersion of of the DML will sound better and looks are not important in this hidden location. Also, full range one panel is not my goal so hybrids are okay. I have a complete shop in a separate garage/shop building and can build almost anything.