Hi Everyone
I am having trouble with a strange background noise coming from my Theremini.
There is strange oscillating sound in the background all the time.
But this sound is only present when I use the internal speaker or connect it to an external amplifier/speaker. I cannot hear it through the headphones. Also, I can hear it through the internal speaker when the volume is at zero.
Here is a link to a youtube video I made of the sound when heard through an external amplifier:
https://youtube.com/shorts/7xNA9bctNX0?feature=share
I calibrate before each use and have tried the theremin in different rooms of my house so I don't think it is an interference or ground issue (if it was, why do I not hear it through my headphones?).
Many thanks for your help
Best regards
Paul
Thermemini: Strange oscillating background noise through speaker
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- Posts: 2
- Joined: Wed Jan 05, 2022 12:55 pm
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Re: Thermemini: Strange oscillating background noise through speaker
Hi Paul,
You are not alone, I have exactly the same issue including the clean line and headphone outputs. I have tried different rooms, different ring circuits, using the ground post etc. all to no avail.
Just realised, Paul, you and I have already discussed this issue elsewhere but it doesn't harm to log it here!
Regards,
Steve
You are not alone, I have exactly the same issue including the clean line and headphone outputs. I have tried different rooms, different ring circuits, using the ground post etc. all to no avail.
Just realised, Paul, you and I have already discussed this issue elsewhere but it doesn't harm to log it here!
Regards,
Steve
Kind regards,
Steve
Steve
Re: Thermemini: Strange oscillating background noise through speaker
Hi guys
I had this exact problem - just the same as the YouTube clip. I changed the power supply. Somehow I had got it swapped with my Yamaha keyboard supply.
With the original power supply the Theremini works fine.
Ade
I had this exact problem - just the same as the YouTube clip. I changed the power supply. Somehow I had got it swapped with my Yamaha keyboard supply.
With the original power supply the Theremini works fine.
Ade
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- Posts: 2
- Joined: Wed Jan 05, 2022 12:55 pm
Re: Thermemini: Strange oscillating background noise through speaker
Thanks for the advice Ade!
I'll try a different power supply.
Cheer
Paul
I'll try a different power supply.
Cheer
Paul