The VFX-SD is an enhanced version of the Ensoniq VFX. It still has the same cartridge slot and is compatible with VFX patches. Like the original VFX, it can combine up to 6 waveforms in a single patch, resulting in some complex layered sounds. It was followed by the Ensoniq SD-1.
The VFX-SD contains a set of 17 transwaves that can be used for wave sequencing. Here is the transwave list:
The VFX-SD adds a 3.5" floppy drive, an enhanced sequencer, aux outputs, and additional drum waveforms.
The waveforms in the VFX-SD that are not contained in the VFX are the two wave classes, DRUM-SOUND and MULTI-DRUM. Here's what's missing:
DRUM-SOUND MULTI-DRUM gate-kick all-perc room-kick all-drums gate-snare kick-drms rim-snare snar-drms close-hat hi-hats open-hat cymbals ride-cymb tom-toms dry-tom-l percusson dry-tom-h dry-toms gat-tom-l room-toms gat-tom-h gate-toms rm-tom-l congas rm-tom-h std-kit timbale gated-kit conga-lo room-kit conga-hi tamborine
The VFX-SD manual was impossible to find on the web in digital form. We tracked down and bought a copy (for $25) and spent a while scanning it, creating a PDF you can download for free below.
Year Released: 1989
Keyboard: 61 keys with velocity and aftertouch
Polyphony: 21 notes
Multitimbral: 12 parts
Preset Patches: 60
User Patches: 60
User Drum Kits: 24
ROM: 141 waveforms
Sequencer Resolution: 96 PPQN
Effects: reverb, chorus, flanger, phaser, delay, distortion, rotary speaker, compressor, wah
Sequencer: 24 (12+12) Tracks
Sequencer Memory: 25,000 Notes (Expandable to 75,000 Notes), 60 songs.
Latest OS Version: 2.1/2.00