DIY Flat Panel Speaker Love

[Unbiasedsound]

I dont think many people visit this forum. Plus the title of this topic does not include the words DML so many will just pass it up.

There is no white paper on these basic fundamental techniques in designing a DML panel, unless I write my own white paper. lol

The problem is many do not understand these basic fundamental 101 techniques. One cant disagree if one does not know WHY each specific technique is done.

I dont think people arent engaging because of my condescending tone. In fact a condescending tone usually brings on a challenge. The problem is there are no challengers due to lack of participants aka forum members interested in DML and or lack the knowledge.

I follow the topic on the DIYaudio forum and its mind boggling the stuff they come up with as if these panels can defy physics because they dont even understand the fundamental basic steps in designing a DML panel. Including those that seem to be veterans on DML. One cant build on a weak foundation as everything built on top will eventually crumble. Once you get why the fundamental foundation techniques are used it will set you on the right path.

If you've been following my recent posts I have mentioned that these DML panels are very similar to conventional cone drivers as you cant defy certain physics.

My questions are to make people "THINK FOR THEMSELVES". Most people seem to like to "COPY" someone elses design instead of designing it themselves.

I am not concerned if anyone replies to my posts, its more to make one think and pounder on those questions and seek the truth for themselves.

[LOUT]

Perhaps some simply disagree, or maybe they don't feel like answering/engaging at the time?
I literally don't know why DML corners "need" to be rounded, so in my case digging through 244pages would be a hindrance more than a boon.

I do feel like your specific questions here, if meant to act as teaching tools, should probably include a link to the whitepaper or thread or page detailing the reasoning behind the answer.

I also admit to automatically reading your questions here in a pretty condescending tone, so that might be making some people avoid engaging if they're having the same issue I am...though I'm not sure how you could change that because I'm not exactly a beacon of good communication.

[Unbiasedsound]

Its sad when people dont even know the basic foundation questions of DML. On the DIYaudio forum they dont even know why the corners need to be rounded and that topic is 244 pages long. LOL

[Unbiasedsound]

Can anyone tell me why EPS needs to be sanded?

[Unbiasedsound]

Where have you been lout this has been one of the main fundamental techniques of DML 101 said and used on many forums including this one.

[LOUT]

They do?
If so, to what minimum radius, or to what relatives?

[Unbiasedsound]

Did you get this from an article?

[Unbiasedsound]

Can anyone tell me why the corners of a DML panel need to be rounded?

[Unbiasedsound]

Tectonic BMR Speakers Before/After Audio Quality Difference in Underground Railway Station - YouTube

Lets see if anyone can tell me why the BMR speaker is more intelligible then the conventional cone driver?

[allenb]

Great information on your experience with bypass caps, thanks for posting. When I get everything setup I'll start listening with the NPEs and then give the bypass caps a go for comparison. You are so right about personal preference and ones design and application! I chuckle when I read speaker reviews. As many know, change one thing, whether it be moving the couch or adding or taking away a rug in the listening area, going from one turntable cartridge to another can make speaker X sound great for one person and in their neighbors setup, sound barely passable. A lot of people never get it that the speaker system is only one piece of the whole delivery system and treat it as if what they hear is a mirror image to what everyone else will experience.

BTW, I got an email showing there was a post in this thread!

[Unbiasedsound]

The Audyn copper cap is friggen good IMO but its friggen EXPENSIVE!!!!!!!!!!! I must have lost my mind for a second to spend $55.00 on a pair of by pass 0.1 Audyn true copper caps. LOL

[Unbiasedsound]

I haven't found how to get email notifications when a post comes in so just now seeing your post.
So you can hear the difference when using a film bypass cap. I've read lots where some claim no difference and others swear by it in crossovers. Were you able to do a AB comparison with quick switching back and forth and very noticeable or just very slight improvement that can be perceived only by golden ears?

From my own hands on experience I have found that capacitors actually color the sound in which in turn makes it sound different. Now in terms of is it "BETTER" is all personal preference and or based on ones design and application. IMO putting anything in the signal path to the driver will change the sound and the more components used the more the sound can change. I tried using a 0.01mh jantzen inductor on my small mid/high range panels just to see if the sound would change and it did. Then I added a 0.1uf jantzen cross cap to the 0.01mh jantzen inductor and the sound changed again.

One does not need so called Golden ears to hear the changes you just have to listen critically and you will hear the difference just as long as nothing is wrong with your hearing to begin with. The differences between different caps can be subtle to night and day it all depends on each particular cap being compared. If one is not familiar with the sound signature of said capacitor then you will not be able to pick which cap is playing BUT you will KNOW if the sound has CHANGED.

From my experiments combining by pass caps with NPE caps seem to blend well together and its cheaper then the larger value higher end caps. Some say the better the cap the more neutral it sounds which I do believe as it is less colored but no doubt colored to a lesser degree. NPE caps IMO sound neutral/balanced they just lack sophistication, clarity and detail like the higher end caps. This is where the "BY PASS" caps come into play as they will add that sophistication, clarity and detail to the NPE caps while remaining neutral/balanced sounding. Also not all by pass caps combine well with each other as you have to find the right blend or right combination as some caps when combined can smear the sound due to having different colorations.

The caps I prefer and or the ones I have experience with are Jantzen and Audyn. The entry level Jantzen crosscap or Audyn q4 is a start. (0.1-0.01) as they are cheap just under 2 bucks. Higher end caps I prefer are Jantzen Z superior and Audyn plus.

No offense but I dont like the sound of Dayton caps for my DML panels. lol

[allenb]

Here's my settings for notifications

[allenb]

Also if you want to upgrade the electrolytic capacitor I have found that "BY PASS" caps work very well with electrolytic caps. I use either 0.01 or 0.1. Entry level Jantzen cross cap and or Audyn cap q4 will increase clarity and detail.

I haven't found how to get email notifications when a post comes in so just now seeing your post.
So you can hear the difference when using a film bypass cap. I've read lots where some claim no difference and others swear by it in crossovers. Were you able to do a AB comparison with quick switching back and forth and very noticeable or just very slight improvement that can be perceived only by golden ears?

[Unbiasedsound]

Also if you want to upgrade the electrolytic capacitor I have found that "BY PASS" caps work very well with electrolytic caps. I use either 0.01 or 0.1. Entry level Jantzen cross cap and or Audyn cap q4 will increase clarity and detail.