Aetherwellen-Musik.de

Home-brewed Theremins ... and other strange devices

This is a non-commercial Web page, dedicated to all Theremin enthusiast. All information is provided free of charge and for non-commercial use only.

Even when based in Germany, I try to write using English language, because the issues presented and discussed are of general interest and shall be accessible for the majority of people. Nevertheless, you can contact me in German too - of course. If you're a native speaker, please don't hesitate to inform me regarding e.g. typos or wording.

Hinweis: Schaltungen und Verfahren werden ohne Rücksicht auf bestehende Patente mitgeteilt. Sie sind ausschließlich für Lehr- und Experimentierzwecke bestimmt und dürfen nicht gewerblich verwertet werden.

Note: The circuits and techniques are imparted without regarding existing patents. The presented issues are exclusively intended to be used for teaching- and experimentation purposes and must not be commercialized.

Aktuelles / Updates

04-03-2021 EW Standard Theremin Modifications:

EW-REB 01-2021 extension board revision 0.2 description R101 value corrected,

24-02-2021 EW Standard Theremin Modifications:

Diagrams of the volume dependent pitch duty-cycle and pulse-ratio characteristics of the EW S/+ with attached EW-REB 01-2021 extension board revision 0.2 added. Schematics of EW-REB 01-2021 extension board corrected (Rev. 0.2).

07-02-2021 EW Standard Theremin Modifications:

Diagrams of the pitch dependent duty-cycle and pulse-ratio characteristics of the EW S/+ with attached EW-REB 01-2021 extension board added.

31-01-2021 Sonstiges / Miscellaneous:

 

Miscellaneous development of a Masken-Andruckbügel / Mask Pressure-Stirrup added.

17-01-2021 EW Standard Theremin Modifications: 
Improved 'EW Standard and EW+ Theremin Modification 01-2021 (EW-REB 01-2021)'
chapter added.

29-12-2020 EW Standard Theremin Modifications: 
Improved 'EW Standard and EW+ Theremin Modification 12-2020 (EW-REB 12-2020)'
chapter added.

29-12-2020 Messungen / Measurements: 
Audio pulse measurments of the improved 'EW Standard and EW+ Theremin Modification 12-2020 (EW-REB 12-2020)'
added.

15-11-2020 Theremin Bau-Hinweise / Construction Advice:

Theremin Coil Construction:
Pictures of Theremin antenna extension (linearization) coils and self-capacitance (lumped / distributed capacity) measurement of coils added
Description and pictures of 'Tiny Coil Winder' (to be used to wind low distributed capacity theremin antenna extension coils) added

Applying Line-Transformers as Theremin Interstage Transformers and AF-Chokes:Frequency-/phase response diagrams of vintage interstage-transformers added

Essential Measurement Equipment for Theremin Construction:
Slight additions

09-11-2020 Theremin Geschichte / History:
Minor changes (typos corrected)

09-11-2020 Theremin Bau-Hinweise / Construction Advice:
Pictures of oscillator coils and ferrite rods added, typos corrected

08-11-2020 Theremin Bau-Hinweise / Construction Advice:
Theremin Bau-Hinweise / Construction Advice page added

06-11-2020 Videos:
Videos page updated (Theremin Construction / Test Videos & Vintage Devices Collection Videos), descriptions added

04-11-2020 Theremin Functionality:
Minor changes (typos corrected)

04-11-2020 Questions and Answers:
Minor changes (e-mail reference)

 02-11-2020 Videos:
Russian Miniature-Tube Theremin Test (2015) video quality updated

31-10-2020 Videos:
Etherwave Standard Theremin simplest ever ‘Lower-Register’ (bass range extension) modification and 'Rockmore-Sound' Modification Test videos corrected in terms of picture / sound synchronicity and preview picture

31-10-2020 EW Standard Theremin Modifications:
Etherwave Standard Theremin simplest ever ‘Lower-Register’ (bass range extension) modification and 'Rockmore-Sound' Modification videos corrected in terms of picture / sound synchronicity and preview picture

28-10-2020 EW Standard Theremin Modifications: 
Minor corrections and additions of the Etherwave Standard (EWS) Theremin modification descriptions

28-10-2020 aetherwellen-music.de:
General corrections

26-10-2020 Theremin Functionality:
Minor changes of 'General Functionality of the Rockmore- and Rosen- Tube Theremin Instruments according to Leon Theremin’s Design'

25-10-2020 Questions and Answers:
Minor modifications of Q & A

25-10-2020 Rockmorizer Theremins: 
RT-6SH2P-X Tube Theremin circuit descriptions modified

18-10-2020 Videos:
Videos updated of FRANZIS Theremin Kit Modification and RT-6SH2P-X Tube Theremin

18-10-2020 Rockmorizer Theremins: 
RT-6SH2P-X Tube Theremin added
FRANZIS Theremin Kit Modification Test Video added

16-09-2020 Rockmorizer Theremins: 
FRANZIS Theremin Kit Modification added

15-09-2020 EX1hi HI8 Camcorder Instandsetzung / Restoration:
Canon EX1hi HI8 Camcorder Restoration Project added

09-09-2020 Questions and Answers:
13. ‘Antenna extension coils’ modified, 14./15. ‘Radiated energy’ added, 16. electromagnetic field’ added

09-09-2020 Functionality: General Functionality of the Rockmore- and Rosen Tube Theremin Instruments according to Leon Theremin’s Design - Sound Anaysis:
Intermediate frequency (IF) descriptions and according literature added

03-09-2020 Intention:
Radio collector 'WDR Lokalzeit Suedwestfalen 3.3.1997' video added

25-08-2020 Sammlung / Collection:
Radiostat-Heilgeraet video added 

25-08-2020  Rockmorizer Theremins: 
Sound spectrum hamonics numbering corrected

25-08-2020 Functionality: General Functionality of the Rockmore- and Rosen Tube Theremin Instruments according to Leon Theremin’s Design - Sound Anaysis
Sound spectrum hamonics numbering corrected

19-08-2020 Literature: 
Literature listing expanded, preface added

19-08-2020 Questions and Answers: 
Theremin Instruments - Questions and Answers added

10-08-2020 EW Standard Theremin Modifications: 
Sound spectrum discussion of the  RS-Mod. EWS Theremin added

10-08-2020  Rockmorizer Theremins: 
Sound spectrum discussion of the  RT-6SH2P / 6ж2п Tube Theremin added

10-08-2020 Functionality: General Functionality of the Rockmore- and Rosen Tube Theremin Instruments according to Leon Theremin’s Design - Sound Anaysis
Adde
d description of volume dependent sound spectrum and discussion of RCA Theremin timbre. Literature listing expanded accordingly.

01-08-2020 Functionality: General Functionality of the Rockmore- and Rosen Instruments according to Leon Theremin’s Design - Sound Anaysis
Adde
d sound spectrum pictures of the Theremin instrument of C. Rockmore and additional descriptions

01-08-2020 EW Standard Theremin Modifications: 
Adde
d note regarding the work of L.D. Korolyov (Л. Д. Королёв). Literature listing expanded accordingly.

26-07-2020 Videos:
Videos updated

26-07-2020 Theremin Instrumente / Instruments:
Kosmos-Rockmorizer-XN Theremin pictures addeded

26-07-2020 Sammlung / Collection:
Gloecklen-Heilgeraet pictures addeded
Helios-Heilgeraet pictures addeded
Radiostat-Heilgeraet pictures addeded

26-07-2020 Realton 'Variophon Standard':
Variophon Standard Descriptions and pictures addeded

25-07-2020 Tektronix Type 576 Curve-Tracer:
TEK576 photos added/changed

27-07-2020 aetherwellen-music.de:
General corrections

18-07-2020  EW Standard Theremin Modifications: 
Minor changes, Etherwave Standard Theremin simplest ever ‘Lower-Register’ Modification video added

27-06-2020  Videos: 
RT-6SH2P / 6ж2п Tube Theremin video added

19-07-2020 Tektronix Type 576 Curve-Tracer:
TEK576 photos added

27-06-2020  Rockmorizer Theremins: 
The RT-6SH2P / 6ж2п Tube Theremin added
The M35-AMP added
The Rockmorizer Silicon 2017 Theremin added

17-06-2020  Functionality - General Functionality of the Rockmore- and Rosen Instruments according to Leon Theremin’s Design:
Schematics of the Rockmore and Rosen instruments added

21-05-2020  EW-Theremin Modifications: 
Etherwave Theremin simplest ever ‘Lower-Register’ Modification added