I have two about 42 years old Visaton RHT12S planar tweeters and i noticed that the output was getting less.
I measagered it and above 8 - 10 KHz was a steep decline in output which i now compensate with APO Equelizer
with about 10dB.
What could the reason be that the planar has less output? Could it be the membrane or magnets? Any input is welcome..
I measagered it and above 8 - 10 KHz was a steep decline in output which i now compensate with APO Equelizer
with about 10dB.
What could the reason be that the planar has less output? Could it be the membrane or magnets? Any input is welcome..
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That’s some good Questions? You could E mail Visaton them self and see what they come up with in terms of the less out put that is happening? So I had a Similar problem years ago with a set of Fostex Fe103 drivers. I found a magnetic company by me and the engineer gladly helped me out. He tested the magnetic field of both drivers and the strangh of the magnets as well. Everything was fine but, the magnets were a little weak. They were also Alnico magnets. You could experiment and find out what magnets they used and buy same ones with a little stronger magnetic field and glue them on top of the original magnets same size and length? Then measure them each one with the extra magnet on back and one without? Or you could Just E mail the company. Good Luck. Jeff
No problem. I wish I could help you more but, I have no experience with magnet repair or fixing. Good luck. 👍