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Old 21st December 2008, 12:20 PM   #11
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My diaphram messures 120x980mm. and is made of alufolie witch paper in DK. it is used to ¨store food in.Thickness of alu is 0.007mm. + the paper.I cut it into coils of 8mm.wide. I use 11 meters to make a diaphram and the Resistance is 5 ohm.The tape is from 3M called microporre and for helth care.I cut it to coils of 3mm. wide.
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Old 27th December 2008, 11:35 AM   #12
jzagaja is offline jzagaja  Poland
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Hi there Båndsei,

Has 3m Microporre adhesive on both sides? I think we can coat it with conductive glue 0.01 Ohm per cm can we?
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Old 1st January 2009, 04:46 PM   #13
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Microporre has only adhedsive on one side,and i dont think it is better to use conductive glue.
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Old 5th January 2009, 09:26 PM   #14
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Hi båndsei

That really is some very nice design work and high quality construction. What frequency coverage is typical from these devices? Also, how is the polar dispersion in comparison to a flat panel?

Thank for sharing this project with us,

Cheers

Ed
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Old 11th January 2009, 06:13 PM   #15
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My curved planarspeaker has not been tested,but i think it goes from 150 hz to 18000 hz. maybe 20000 hz.I will try to build a new one 21x80 cm. and try to curve it horisontal too.To curve it horisontally,i dont get the "hot spot".
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Old 25th January 2009, 03:21 PM   #16
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Click the image to open in full size.Click the image to open in full size.
Here is a picture of my curved planar speaker.I have curved it horisontally too.
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Old 25th January 2009, 03:29 PM   #17
jzagaja is offline jzagaja  Poland
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Awesome! Are you using shellac veneer? If it could goes down to 50Hz , imagine completely curved magnetostat in which back wave is transmitted through tapered quarter wave waveguide and every part is steerable so that you can change directivity if necessary.
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Old 26th January 2009, 06:36 AM   #18
jzagaja is offline jzagaja  Poland
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Magnets are placed vertically or horizontally?
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Old 26th January 2009, 02:33 PM   #19
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Here is a picture from behind,magnets are mounted vertically on 5x10mm.iron.
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Old 31st January 2009, 12:01 AM   #20
a.wayne is offline a.wayne  United States
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Roger Sanders , say's to stay away from curved Panels ....

http://www.youtube.com/watch?v=Vdf3V...eature=related
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