TH-18 Flat to 35hz! (Xoc1's design) - Page 64 - diyAudio
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Old 16th June 2012, 02:23 PM   #631
NEO Dan is offline NEO Dan  United States
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If one wants to know how happy Tom is to "give" away the IP all one has to do is look at this:
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Old 16th June 2012, 02:56 PM   #632
jbell is offline jbell  United States
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dan:
actually that doesn't do justice to how high quality the images are on danleys site.

Right click on image, and do a 'save image URL' then paste that into your browser, and click the "plus" to see full size....

An amazing amount of detail can be seen in the wireframes... In one of the synergy wireframes you can even easily see/measure the ports for the mids, including the entry/exit sizes of the ports. There's enough detail that if a person wanted to, you could exactly copy the cabinet.

Last edited by jbell; 16th June 2012 at 03:10 PM.
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Old 16th June 2012, 04:27 PM   #633
rpowell is offline rpowell  United States
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I had an SH50 that I purchased for about $2200 and I have seen used ones go for as low as $1500. Yes, you could make a copy, but there is a somewhat elaborate crossover network in the thing (try reverse engineering that from the drawing!), and the woodwork isn't as easy as making, say, a tapped horn. It's a nice piece of woodwork, and put together with Torx screws with inserts for the removable panels, etc. I think the cost effective method would be to find a good one.
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Old 16th June 2012, 09:09 PM   #634
Xoc1 is offline Xoc1  United Kingdom
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I know that Tom has been following this thread as I noticed his name in the viewing list a while back, but he has kept quiet (at least in public)!
I would like to thank him for the new website - there is a lot of truly inspirational information on there for anyone who takes the time to look.
I like the comment on the Danley University page.....

Quote:
Did you know that the word educate comes from two Latin words meaning “to lead out of”, with the implication that to educate is to lead someone out of the darkness of ignorance to a better place!


Regards Martin (Xoc1)
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Old 16th June 2012, 10:47 PM   #635
NEO Dan is offline NEO Dan  United States
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Personally I think we should weed out the off topic posts and get back to the business of building better stuff. Unfortunately our moderator Dave has his PM's disabled.
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Old 16th June 2012, 11:50 PM   #636
Mark Kravchenko --- www.kravchenko-audio.com
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Ok where's the weed whacker?


wack

weed

wack
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Old 16th June 2012, 11:56 PM   #637
NEO Dan is offline NEO Dan  United States
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Whacked is more like it
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Old 17th June 2012, 12:06 AM   #638
Mark Kravchenko --- www.kravchenko-audio.com
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comes and gets me !
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Old 19th June 2012, 03:38 AM   #639
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Quote:
Originally Posted by mwmkravchenko View Post
We all stand on the shoulders of Giants.

Same is true for Mr. Danley. He took a forgotten method of enclosure design and made it his own by means of intelligence and determination and well thought out marketing. Nothing wrong with that.

What is in this thread and a few others is an open dissemination of the same type. You guys run with what you have put together and be proud of what you have accomplished.

And don't stop and sit back thinking you have created the perfect enclosure. Tweak it! Fix it, make it better. That is the real difference you can effect as a DIY designer
Mwmkravchenko you greatly missed the mark on this.

For one, I wasn’t aware of the any other designs that were similar. Having been a speaker builder for 40+ years and in commercial and live sound for much of my life, I was surprised to see something that looks similar.

The Tapped horn idea came from thinking about the reflected signal that causes a notch in any side mounted drivers on the synergy horn.
I wondered ‘what if” is substituted an active source of the opposite sine for the reflected signal.
After a week of fiddling in Akabak I had something to try and then found some rules to go along with it. We sold the first Tapped horns 7 years ago when we started the company and right off the bat, they were a hit because they really do work.

Further, I assume your speaking of the Transflex enclosure which if you had read the patent you would have noticed a couple things. For one, they call out that the “system” has the same efficiency as the direct radiating mounting of the driver AND that the driver can be mounted outside of the enclosure, both NOT like the tapped horn.

In the Tapped horn, it is possible to get a gain of 10dB or more over the direct radiating case for the driver and that comes about from acoustic loading the Tapped horn provides.

Speaking of that, the Transflex makes no claim to or exhibits this and if one examines the areas where the front and back of the drivers are, you would notice it is also not a horn or sized to produce this effect.

Lastly, I do not copy designs and don’t even get trade magazines and to accuse us of growing because of clever marketing is insulting, we are surrounded by companies that ARE just that, our success so far is based on side by side comparisons and little else. The only way you can start from scratch and succeed against the giants is by having a better mouse trap.
Also if you do a “google patent” search on my name, you will find a good number of things which are to the patent office’s view “original”.

The patent office may or may not issue a patent on the Tapped horn, sometimes applications go through, sometimes they don’t, I have been in R&D and inventing most of my life also but still can’t tell what will go and what won’t with them.

Lastly, I can’t complain about DIY’rs figuring out how my inventions work, that is my background too and while you may never have seen any, I have dropped some important clues along the way in this and other forums.
On the other hand, an attitude like yours kind of makes me kind of wish I had never said a word about how anything works like most of the other designers i know.

Tom Danley
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Old 19th June 2012, 09:46 AM   #640
MaVo is offline MaVo  Germany
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Quote:
Originally Posted by mwmkravchenko View Post
We all stand on the shoulders of Giants.

Same is true for Mr. Danley. He took a forgotten method of enclosure design and made it his own by means of intelligence and determination and well thought out marketing. Nothing wrong with that.

What is in this thread and a few others is an open dissemination of the same type. You guys run with what you have put together and be proud of what you have accomplished.

And don't stop and sit back thinking you have created the perfect enclosure. Tweak it! Fix it, make it better. That is the real difference you can effect as a DIY designer
Standing on shoulders of giants is different from intellectual theft! The one is what we all do when learning things in school, the other is at least dishonest, or outright criminal. One does not simply accuse people of doing that without having substantial evidence. Doing so is ignorant and entitled. Especially in this case, since you are obviously wrong.
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