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5 Attachment(s)
DIY coils
Hi all!
I just built a pair of matched coils for my new little speakers, passive crossover filter.
I would recommend a good free software: coil32, there are many available, this one is pretty friendly and accurate.
I needed 0,3mH air core coils, I build with lathe a Delrin sprockets and wind by hand. Simulations are very close to the real value, I had to trim few turns to reach the correct value. Copper is a high quality from italian brand, double layer enamel.
I measured both coils, resulted 0,298mH and 0,66 ohm, a perfect match for my filters.
That's the software used:
https://coil32.net/download-coil64-for-windows.html
Attachment 34857 Attachment 34854 Attachment 34855
Attachment 34856 Attachment 34853
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The "black magic" of electronics has always fascinated me. I have some understanding, but have only built a few things from well documented schematics.
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1 Attachment(s)
Electronics is really a funny world! My most extreme building was the plasma tweeter,a Dangerous but funny project, unluckily I stopped the development, I need to find other good parts to experiment.
This is the little speaker I developed and built. I used a Monacor Sph165 modified with phase plug and different T/S parameters, ported (heavy) enclosure, Modified Tweeter. I will take measurement soon, according simulations I should have 46hz at -3db. I tried a fast listening with makeshift components (basically attenuation on tw and high pass filter), results seem quite impressive
A small video recorded with phone
https://www.facebook.com/stefano.ran...2121334525076/
Attachment 34863
PLasma tweeter
https://www.youtube.com/watch?v=yBrmUT12lz8
