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Rubber magnet Midrange Planar magnetic
Rubber magnet Midrange Planar magnetic
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Old 23rd April 2020, 11:02 PM   #1
WrineX is offline WrineX  Netherlands
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Join Date: Mar 2004
Location: Den Haag
Default Rubber magnet Midrange Planar magnetic

Made some Mid ranges from rubber magnet, trying some new stuff when it comes to using a cut coil etc.


Part 1 - making magnet jig
YouTube

Part 2 - making the magnets
YouTube

Part 3 - making the frame
YouTube

Part 4 - Cut the coil
YouTube

Part 5 - Glue the magnets
YouTube

Part 6 - Tension foil
Youtube

Part 7 Measurements by roboJoppe

Youtube

Last edited by WrineX; 23rd April 2020 at 11:06 PM.
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Old 23rd April 2020, 11:07 PM   #2
WrineX is offline WrineX  Netherlands
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some of the measurements used in the last video
Attached Images
File Type: jpg SPL 1 meter FR.jpg (147.5 KB, 127 views)
File Type: jpg DISTORTION 285 SINGLE.jpg (224.6 KB, 128 views)
File Type: jpg DISTORTION 285 PP.jpg (229.6 KB, 129 views)
File Type: jpg distortion max SINgle.jpg (247.8 KB, 119 views)
File Type: jpg distortion max pushpull.jpg (238.1 KB, 125 views)
File Type: jpg waterfall PP 2.85 volt.jpg (370.8 KB, 28 views)
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Old 24th April 2020, 06:32 PM   #3
RogerGustavsson is offline RogerGustavsson  Sweden
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Join Date: Aug 2004
Location: Huskvarna
i think a slightly higher tension would be needed, in order to get a smother roll-off at maybe 300 Hz. A higher tension use to be good for higher frequencies too. Just a thought.

By the way, was in Delft last weekend! A very fast visit to clear my sons flat, now more TU Delft for him. It is all online since 5 weeks. A bit scary with the empty streets in the Netherlands and even more so in Germany.
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