Adjusting Etherwave for Pitch Linearity

"Now, I can't wait to receive and install the ESPE01 module I've finally been able to purchase.  If it improves the timbre even a little bit, I'm going to be very happy."

You're going to LOVE the ESPE01. You'll likely need to tune it again after the installation, but it's well worth the trouble.

Hi Jason

I just found this website.  I am in Kirkland and was woundering, there seems to be a few people on the forum from the east side and Seattle.  Is there any type of theremin meetup group in the area?

I also have an either wave and would like to find out about adjusting its linear pitch playability. I have not researched the ESPE01???  Is this a mod? I will google it after.  

cheers

Paul

Hi Paul,

the ESPE01 is a mod, yes. It's a module which you may install in your Etherwave. It extends the pitch range by up to two octaves in the bass register, improves linearity, eliminates the annoying "dying motorbike" distortion which the Etherwave does by default when playing low notes and gives a wider choice of nicer timbres.

This mod has been designed in France and is produced and sold (worldwide) in the Netherlands. 

There is a video on YouTube where Thomas Grillo explains and explores all the new features of a n upgraded Etherwave. Just search for "Thomas Grillo ESPE01".

I posting a question that might have already been answered here ,and I'm sorry if I didnt get the right forum,,,couldnt find exactly where to put my question,,so..my question is , I havent played my theremin in 3 days and having had 3 days of cold spells here in Montreal Canada, do you think this affected my pitch knob? I 've been playing 5 days a week ,3 hours a day and always had perfect  distance, from the Theremin  , lowest pitch behind me like Carolina Eyeck has been teaching me , and bang ! today , the lowest note is 6 inches from my shoulder , then zero beat and as I move to touch my shoulder, the sound rises,,impossible to  have it otherwise.

My knob is usually turned counterclock wise to the end and it was perfect .please dont tell me I have to put a screwdriver in this instrument .. I am zero in this , but was wondering if the cold messed it up..I leave it at the same place everytime I play. Right now I am cranking up the heat in hopes that it will help.I have it in the basement, and it is finished and well heated. The sound is great, and the same. I was coming along so good !

Au secour someone !? I need to play !!

Merci !

Ginette

Normally, the lowest pitch should be in a convenient position when the pitch knob is at its center position... But the pitch knob is there to compensate temperature / humidity / aging of the components / moon phases / etc.

Thus, by turning the pitch knob counterclockwise, you should get back your desired pitch field geometry. A screw driver is only needed when the zero beat point is too close to the antenna, even with the pitch knob fully turned to the left.

Merci Thierry for the reply ,,so you are telling me to find a comfortable position with my lowest note  depending on the moon , temperature ect ?That's why I love the Theremin , it's alive !! I just found it odd that all of a sudden after 3 months of practice with the same pitch knob position , the pitch knob has to be moved ,, which changes my whole body position . I have to be closer to the Theremin now,,, mais peut- être est-ce moi... Gros merci de ton temp de réponse ,,which you I had someone like you in Montreal ! Au plaisir !

Ginette

Ginette, you are welcome.

If you need further assistance, don't hesitate to use the Facebook Messenger which is always on 7j/7 - 24h/24 on my side. 

. My knob is usually turned counterclock wise to the end and it was perfect .please dont tell me I have to put a screwdriver in this instrument ...   Merci ! Ginette"

When I built my etherwave I found that the pitch knob had to be set all the way clockwise and even that was sometimes not quite enough.  Quite by accident I found that a 25 cent piece taped to the top of the pitch rod (metal to metal - no plastic in between) would make it so the pitch knob could be turned almost to the center position.  Since then I made an aluminum UFO tip ornament that plugs into the pitch rod and does the same thing without falling off.

When I built my etherwave I found that the pitch knob had to be set all the way clockwise and even that was sometimes not quite enough.

Sorry, I made a typing mistake.  My pitch knob had to be all the counter clockwise. i.e. the exact problem Ginette has.  With the 25 cent piece, and later the UFO ornament, I did not have to make any other adjustments.  Give it a try, it will only cost you 25 cents (just 19 cents US!)

Thank you Senior falcon,,will give that 25 cent coin a try ,,I moved my body a bit  more towards the right and things seem to be back to normal,, but what is an aluminum UFO tip ornament  ?  Sounds pretty !