Vision of 2003 . . ."True beauty is hidden in Simplicity"
Rockmore is the #1 theremin virtuosa, but how did Lev Sergeyevich
create her "authentic" golden sound?
My 12 year theremin journey seems to be winding down. As
time passes I begin to forget details.
People seem to gravitate toward the digital stuff today
which for me misses the point... which is the connection
with the past.
The most important aspect I think is that authentic fat sound... not a
synth sound or nine octave whistle buried in reverb, you
get that from a keyboard.
The Altermen Authentic.wav
This is Altermen direct to sound card, no acoustic development.
designed a single tube theremin-like hybrid instrument that has
the Classic Sound, Drift Resistant and a Perfectly
Linear Pitch field. My standard proximity Volume Control can be
so it can be placed anywhere around you. This hybrid Pitch setup
with Volume Control can be built for less
It uses three 8.2" x 3"
circuit boards and one click Mouser component
ordering. Everything not at Mouser like the one vacuum tube with tube
socket I could send you at no cost. I have accumulated a
lot of the right stuff over the years doing my research.
My goal is to find
a handful of competent
builders here in the States for this project. I have nothing to sell, it is
for the love of the Art and honoring those that came
to Tube Warmth (Nature)
Share with me
your building skills, you just might be invited to build the
trade your good wood skills for my giving you 3 PCB's
with the complete tube section in parts?
a simpler Volume
Control PCB layout PDF when it is not used separated
from the Pitch section.
would be great if you built this for someone and sold it
to them for $10,000 (-'
hybrid pitch side uses one of these osc boards along with the Phoenix
Pitch/Volume build to get the authentic sound.
My last project
was to breadboard a hybrid Tube/Valve pitch
oscillator and see if "Perfect Linearity" could be
found. This would clarify if the phenomenon of LINKS
and the Lev Antenna was unique
to transistor oscillators or could it also be demonstrated using a tube/valve
answer is Yes! "Perfect Linearity" happens with
of my theremin experiments over the years used Hartley Oscillators
operating between 800 kHz and 1000 kHz. This higher frequency
allows the design of the Lev Antenna to be more practical. I found that
using hand wound
air coils in the oscillators was a poor choice because it limited Perfect Linearity to just over three
linear octaves and added to pitch drift. Experimenting in real
time demonstrated that using High Q ferrite
coils would give more than five linear octaves, more
than using air core coils.
pitch oscillator around 922 kHz and the Lev Antenna creates
my musical crudeness in a 18" pitch
field in the sample below I will make a one octave
jump by closing my fingers then rapidly opening my fingers within 1" of the pitch antenna. I
will repeat this while moving midway back in the pitch field and then near the
lowest octave. Each time the same hand/finger movement is used. This is one of the easiest methods of validating
any theremins pitch field linearity. I am watching a
tube sine wave
A linear 2400 hz down to 50 hz
linearity remains no matter what size intervals or octave widths
you enjoy playing. This Lev Antenna phenomena once set does not need
retuning. It's tuning bandwidth is broad and stable.
hybrid theremin uses one vacuum tube
on the variable oscillator antenna side and does not
use variable capacitors.
It uses simple
solid state tuning, the
tuning knob could be twenty feet away.
tube/valve hybrid build begins with the Phoenix Solid State.
Pitch and Volume use one each of the same board with
minor parts differences. Build these two boards first then add one tube/valve osc board.
Most of the
parts you purchase from Mouser.
This Altermen could become
one of the most treasured theremin designs,
13 common design myths.