Moog 351 Tube Theremin

Hi All,

I've been lurking and contemplating a theremin build for some time, but made an account today to ask some questions before I really go down the rabbit hole.
I've seen a lot of clones and interpretations of vintage tube theremin designs on the forum, but I'm hoping to create somethings that I haven't seen any build log or even discussion of on here so far: the Moog 351 Tube Theremin.

It seems like most of his designs, there are schematics provided with details and tips on constructing it. I lots of experience with tube equipment as I have worked with it for a long time, and design my own guitar amplifiers (it's therefore less alien to me than transistor based circuits!).

Are there any good reasons to steer clear of this build, and anything in particular that might be difficult?

Thanks!

xan

Hi All,I've been lurking and contemplating a theremin build for some time, but made an account today to ask some questions before I really go down the rabbit hole.I've seen a lot of clones and interpretations of vintage tube theremin designs on the forum, but I'm hoping to create somethings that I haven't seen any build log or even discussion of on here so far: the Moog 351 Tube Theremin.It seems like most of his designs, there are schematics provided with details and tips on constructing it. I lots of experience with tube equipment as I have worked with it for a long time, and design my own guitar amplifiers (it's therefore less alien to me than transistor based circuits!).Are there any good reasons to steer clear of this build, and anything in particular that might be difficult?Thanks!xan

From what I have read on here your biggest obstacle may be acquiring the parts. I think reproducing a piece of history like the Moog 351 would be a worthwhile endeavor....but that opinion is from someone who knows next to nothing about electrical engineering.🤔

Xan said: “anything in particular that might be difficult?”  Theremin building has unique obstacles that humbles most engineers.

https://www.oldtemecula.com/theremin2020/

Tubes vs. solid state brings up the question of … are you after the tube physical warmth or the warmth of the classic sound. I can no longer assist with anyone’s build as father time has taken his toll. Still you should explore my solid-state research.

Performed by my friend Valery Shamarin of St Petersburg Russia for the 100 year anniversary of Lev Sergeyevich Termen's "magnum opus".

Here is a cheap promotion: I use my programing skills to track 1000 stocks on the American Stock Exchange. You will see which stocks take off first at the Market turn-around. This is not "make believe" and I share my results freely as I do profit. - https://www.oldtemecula.com/+thegame-challenge2.pdf

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