Synthesizers and Samplers
MODEL D
Authentic Analog Synthesizer with 3 VCOs,
Ladder Filter, LFO and Eurorack Format
985-40000-01103 Rev.A
2021-02-03
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Confidential, for internal use only. Not to be reproduced.
1. Small insulated trimpot screwdriver
2. Small Phillips screwdriver
3. A flat sheet of cardboard or other insulator as wide as the MODEL D. (This will help prevent damage to the top panel when it is
inverted and resting on the bottom chassis)
The following equipment is required for the Oscillator adjustment and Octave Range adjustment:
1. An external MIDI keyboard of at least 3 octaves including A2 and C6
2. MIDI cable
3. Pair of headphones or a sound system to monitor the main output
The following equipment is required for the Pitch CV adjustment:
1. Digital DC Voltmeter with a scale that can display accurately to 0.001 V
2. Laptop or desktop computer previously loaded with and running a MIDI utility that can send SysEx commands
to the MODEL D
3. USB type A to USB type B connection cable
User Support Bulletin
Introduction
The unit is carefully calibrated at the factory. The performance may change over time or due to environmental changes,
and the following recalibration procedures will help bring it back to its factory settings. If you do not feel comfortable doing
these calibrations, then we recommend they are done by an experienced audio service technician. This is especially true for
those units that need to be opened to gain access to voltage test points and calibration potentiometers.
CAUTION:
Incorrect calibration or damage to the delicate adjustment potentiometers may lead to the unit
becoming inoperable.
Note:
Although re-calibration will not invalidate the warranty, any damage caused during re-calibration may invalidate
the warranty.
Equipment required
