Modules / ESPE01 Etherwave Standard Pitch Extension
EnlargeThe ESPE01 module adds 2 octaves of range in the bass register of the Moog Etherwave Standard and PLUS theremins. It consists of a small electronic circuit that is installed onto the circuit board of the Etherwave. The installation should only be performed by people with experience in soldering and electronics. (See below)
The unaltered Etherwave theremin usually has a reliable pitch range from 1.5 octaves below middle C to 2.5 octaves above middle C. With the ESPE01 module installed the pitch range will start at 3.5 octaves below middle C, while the high register remains unaltered.
What is very important with any theremin is the linearity of the pitch field. Better linearity means more reliable pitch control. Usually the distances between notes are getting smaller in the high register, and larger in the low register, while in the lowest octave the distances gets smaller again. The ESPE01 module not only extends the pitch range, but also the linearity is improved, and continues into the lowest register.
Additionally the timbre of the Etherwave is a little bit smoother when the ESPE01 module is present. This is especially noticeable in the low register, where with the original design the timbre can get quite harsh. With the ESPE01 module installed, the selected timbre is continued in the added low register, giving the Etherwave theremin an even more natural sonic flow to its full pitch range.
The installation of the EPSE01 module is a delicate process. The module itself is installed onto the solder pads on the back of the Etherwave circuit board. The EPSE01 module uses different solder pads then the PLUS upgrade, with one exception. The module is therefore fitted with a solder pad to accommodate the connection to the PLUS circuitry.
Two capacitors have to either be partly de-soldered, or replaced completely by new capacitors that are provided with the module. Two wires from the ESPE01 module than connect to the free leads of these capacitors. Thus the modules function is added to the Etherwave circuitry. Especially the de-soldering is a very delicate job.
By buying and installing the ESPE01 module in you Etherwave theremin you indicate that you do so on your own risk, and you take full responsibility. Damage to your Etherwave theremin due to installing and/or using the ESPE01 module will not be repaired by Moog Music or your theremin dealer, and it will not be covered by their warranties
A detailed explanation of the complete installation process is provided in a video that is available through YouTube for all our customers. The most recent version of this video is provided here:
http://www.youtube.com/watch?v=E7G0PEufqs4
If you wish to install the ESPE01 module but are not sure if you can perform the installation yourself we advice that you ship your theremin to us to have the installation done for you. The price for the installation itself is 23.80 Euro. This is increased with the costs for shipping it back to you.
Please contact us about the options before shipping your theremin to us.
