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Old 20th June 2013, 04:20 PM   #241
john65b is offline john65b  United States
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If they are individual ribbons, kinda close...they touch/short, you may blow you amp...correct?

If they are ferrites, where can I source them??
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Old 20th June 2013, 05:19 PM   #242
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Ferrite magnets are at a cost of 040 each.
dimensions 75x16x11
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Old 21st June 2013, 11:54 PM   #243
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get your neos from china the best prices. That's where I got mine from and ferrites as well.
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Old 22nd June 2013, 09:03 PM   #244
john65b is offline john65b  United States
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ebay? Can you forward a source of the 'net?
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Old 2nd July 2013, 05:44 PM   #245
Atom666 is offline Atom666  Canada
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Hi
I have a couple of questions after reading through the 25 pages.
What is the distance is between the magnets and the back of the diaphragm?
How are the magnets oriented on the perforated metal. Do they go N_S_N_S horizontally or are they just N_N_N_N (or for that matter S_S_S_S)?
Thanks
Andrew
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Old 3rd July 2013, 06:35 AM   #246
gootee is offline gootee  United States
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Usually alternating vertical columns of N and S.

I measured the distance from the mylar to the steel, on my Magnepan MG-12s, a year or two ago, and also measured the magnetic field strength. I posted the results in one of the threads, here. So you should be able to find it with a search.

Maybe search for "mgnepan tesla gauss". I also seem to recall posting with the wrong units, once. So maybe searching for "tesla torr" would find it more quickly

Last edited by gootee; 3rd July 2013 at 06:39 AM.
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Old 3rd July 2013, 08:55 AM   #247
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Quote:
Originally Posted by Atom666 View Post
Hi
I have a couple of questions after reading through the 25 pages.
What is the distance is between the magnets and the back of the diaphragm?
How are the magnets oriented on the perforated metal. Do they go N_S_N_S horizontally or are they just N_N_N_N (or for that matter S_S_S_S)?
Thanks
Andrew
When I use ferrites the distance is 2 mm, and when I use neos the distance is 3 mm. When placing the magnets it is always NSNSNS etc. I have built the magnets both vertically and horizontally. I prefer the horizontal method overall, this gives better bass, I have found. I will probably experiment with tuning the diaphragm using springs. Should be interesting. I will have to experiment more as there are so many different parameters involved in building FRP I have found. Almost too many to get my head around. I only hope I am up to the task. Still we shall see, wish me luck.
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Old 8th March 2014, 07:37 AM   #248
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If anyone is still reading this thread and wants to understand how detailed the work involved in producing a good diy planar speaker, then have a good read of this site (The writer has made many many mistakes & discoveries along his path of enlightenment - avoid these considerations at your own cost of time/effort/money).

Do It Yourself - Ribbon Speakers - Project: La Folia magnetostatic by Mogens Gallardo


Planar speakers, when done correctly, don't just sound like 'speakers'...

...They sound Fabulous !!!


Enjoy.
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Old 8th March 2014, 11:29 PM   #249
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Are there any actually very detailed guides describing the build process in exact detail?
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Old 9th March 2014, 12:03 PM   #250
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Default Do It Yourself - Ribbon Speakers - Project: La Folia magnetostatic by Mogens Gallardo

Consider the article as a starting point, this is DIY after all.

You can improve this design in several areas, with even better sound to boot.
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