Plasma Tweeter construction and repair
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Transistor ION-Tweeter Revision 2

March 2022

Over the last winter I worked on a new version of the Transistor ION-Tweeter. Now there is the Revision 2 with bigger Horn and improved Audio.

Click on the picture to see more.

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Transistor Ionophone

Januar 2021

In the last weeks I worked on a full transistor Ionophone. It is more save because we only need 24V for operating.

I think it is the world first Solid State Ionophone.

Click on the picture to see more.

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My current HiFi setup

December 2019

The DIY Ionophones are now integrated in my Stereo system. They are placed on top of KEF Calinda speakers. The KEF tweeters are disabled and the Ionophones are connected to the KEF crossover as tweeters. This is a perfect match. The crossover frequency is 3800Hz.  The music stage is stable, you can hear every position of the instruments. With placing the tweeters back and forth you can easily find the position when the sound is clear. I am very pleased with this result.

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Januar 2021

The setup changed. My new Transistor Ionophone is now on top of my speakers. With the new aluminium Horn the sound absolutely faboulus. It is a real upgrade. The soundstage is extremly stable and clearer.

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Old Web Site

Nov. 2019

Back in 1996 I started my own little site  www.plasmatweeter.de  with crappy looking .htm files hand written in notepad. I was mainly posting information about Plasma Speakers because this was and is my favorite. Also some DIY stuff was seen there.

Family grow up with two children and time for audio was a rare thing, I sold many of the gear while I focussed on other hobbies, family and work.

Now I am retiered and had to do something to kill all that spare time (laugh). So I had a closer look to my parts and boxes which had survived remembering the good old days of tube audio and Plasma Speakers.

In light of the new time, I want to add some information on my 20 year old  html files. Shortly I realized it is time to make a new site that has it's roots in the current century. To keep it short: here I am back again. Hopefully I wil keep the ball rolling and add some new projects for the DIY community with focus on enjoyment for these kind of wonderful speakers.

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Otto Braun has passed away

A life full of music and the enthusiasm to share this passion with everyone...

In the age of 92 Otto Braun passed away on 23.07.2020

He was the inventor of the CORONA plasma loudspeaker in Germany which today are manufactured by Rüdiger Lansche www.lansche-audio.com 

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