Q：My theremin doesn’t make sound.
A：Check the assembly process.
Is the switch lever attached to the right place?
Are the antenna and wires attached correctly?
Is the connecter of the battery box set in the circuit completely?
A：Check the cone of the speaker.
The transparent part of the speaker oscillates to make sound.
If it is pushed with fingers and dented, it may not make clear sound.
A： Check if the batteries are new.
If the batteries are dead, change these with new batteries. Be careful of
the direction of the batteries.
A theremin consumes batteries as long as the switch is on even if it
doesn’t make sound. Turn off the switch when not in use and remove
batteries.
A：Check the wires of the speaker
If the wires come off of the speaker, solder these up.
Q：I can’t tune it well.
A：Tuning needs fine adjustment.
Turn the tuning stick more slightly. See ﾒHint on turning the tuning stickﾓ
at the lower left of the p.4 and tune patiently.
Q：The zero point doesn’t become stable after
tuning.
A：Check if there is something moving around the
theremin.
If something that conducts electricity is moving around the theremin, the
sound changes. Keep these things at a distance while tuning.
A：A theremin is easily influenced by temperature and
humidity.
Leave the theremin a few minuets after switching on until it becomes
stable, and then start tuning one more time.
Q
＆
A
Theremin mini
Circuit
Diagram
Oh, My Beloved Father
Puccini
From the New World mvt Ⅱ Largo
Dvorak
El Condor Pasa
Robles / Milchberg
ｩ
Copyright by Edward B. Marks Music Company
a-3
a-4
c-2
b-2
