Notes: The Synthesis Technology E370 is a 4-channel DSP-based VCO, 54HP wide module that incorporates features from the E340 Cloud Generator and the E350 Morphing Terrarium (both are discontinued), while adding additional modes from the E352 Cloud Terrarium. It uses 105ma of +12V and 32ma of -12V. … Read more
Each VCO is independent in the E370, but the 'pooled CV buss' (see description below) allows sharing of CV and mixing of audio outputs if desired.
The VCO is based upon a unique implementation of wavetable synthesis using 256 fixed-sample-length tables of 16-bit values. Each bank in memory consists of 64 wavetables, in an 8x8 array (like a chessboard). Our proprietary DSP algorithms then allow either smooth or 'glitched' morphing between the wavetables in various ways. The E370 comes with 3 factory banks (192 total waves) and internal FLASH memory to hold 26 user-defined banks. This allows over 1,650 individual wavetables to be accessible. The free, cross-platform WaveEdit program is used to generate and import WAV files to user Banks.
Everyone hates 'menu-diving', us included. That's why we focused on making the most 'shallow' menu system possible. Everything is just 1 or 2 clicks away. No endless screens and pages to remember. The encoder is a mil-spec Grayhill optical encoder with a 25yr typical life. And if it ever needs replacing, it's on a easy to access cable assembly.
Sharing CV Resources:
The factory default state of the E370 is each VCO has 2 PARMs called X and Y. VCO1 has X1 and Y1, VCO2 has X2 and Y2, and so on. However, these are not 'hard' assignments, just the default ones. You can share ANY of the 8 PARMs across 1-4 VCOs. For example, PARM Y3 can be assigned to all 4 VCOs at once, so turning the PARM Y3 knob and the external MOD Y3 CV is fed to every VCO. This voltage can then modulate each VCO in a different way, depending on where you assign it.
User Wavetables and Patch Storage:
Loading and storing your own wavetables is via the uSD card interface. The uSD card is NOT REQUIRED to run the E370. It is also used for firmware updates. The free application WaveEdit is used to format the wave data and bank data into the proper format used inside the E370.
Audio Output Mixer:
The default state of the Mixer is each VCO is full volume and only appears at its own output jack. Using the Mixer screen, each VCO output can be mixed with all the others. This is useful for the Morph + Phase mode, and also during live performance where only 2 audio outs are commonly used. The mixing levels are fixed in log steps: there is no 'CV-controlled mixing' function.
Although the E370 excels at smooth morphing between wavetables (first introduced in the E350 Morphing Terrarium in 2010), traditional VCO waves such as saws, pure sines, and filtered noise (using a 4-pole resonant lowpass ladder filter) can be selected. Thru-zero, linear FM (in 3 ranges) can be used on not just triangle waves (as in an analog VCO) but with ANY waveshape or any wavetable. Here are all the different modes you can place each VCO in, and remember each VCO can be a different mode.