with ample photos of
each step of the
assembly process. One
thing that caused me
some concern during the
assembly process is the
instructions referred to
diodes (plural) in one
step where only a single
diode is used in the kit.
Before I realized this was
a mistake in the
searched through all the
materials looking for a
second diode which
didn't exist. Thankfully, the complete schematic of the
theremin is provided in the online documentation so I
could verify there was only a single diode used in the
The parts used in the theremin's construction seemed
to be of high quality, and this was proven out when I
plugged in the finished hardware and it worked (kind of)
the first time. More on this in a moment.
It goes without saying that you must have some level
of soldering proficiency to assemble this kit. The thru-hole
construction with lots of room between most
components makes soldering easy.
As a precaution, I used my ohmmeter to check the
values of all the resistors before soldering them into place.
I also oriented all resistors and capacitors in the same
direction where possible (but that’s just me). Photo 6
shows the fully assembled theremin.
Building the Enclosure
The Altura theremin can be packaged in two different
ways: either by following the detailed plans in the
assembly manual for building a case out of cardboard
(from a cereal box or from card stock); or by buying and
building the optional plastic acrylic case.
Packaging electronics in cardboard is better than
nothing, but it doesn't offer a whole lot of protection to
the underlying circuitry.
Still, it’s a low-cost alternative that as long as you are
careful transporting and using the theremin, it can keep
your musical creation relatively safe. An Altura theremin
packaged in a green card stock (cardboard) case is shown
in Photo 7.
As you can see, the case can turn out fine if you are
careful in the construction process. The review kit came
with the acrylic black plastic enclosure that is glued
together using Super Glue™. The parts which make up the
acrylic case are shown in Photo 8.
March 2018 43
Photo 7. The completed theremin in a cardboard case.
Photo 6. The fully
Photo 8. Acrylic case parts.
All parts come covered with
adhesive paper for protection