The QKB15S 5-octave keyboard controller generates precise control voltages and gate signals for use by oscillators, filters, envelope generators and other modules. Four modes of operation allow keyboard splits and dual voices. Additionally, MIDI signals are generated for each key press which can be used to control other devices. Incoming MIDI signals are converted to control voltages and gate signals allowing other MIDI devices to control the analog synthesizer. Responds correctly to MIDI pitch bend signals too. Solid walnut cabinet matches our studio systems. Use our QKB keyboard brackets to stack 2 keyboards.

Extended information

Operating Modes:
There are 4 modes which determine how the keyboard operates:

- Single Voice Mode
Creates a pitch control voltage, gate, velocity control voltage, and a trigger pulse. The keyboard acts monophonically - only one key can be pressed at a time. The most recent key takes priority. The pitch control voltage is normally used to control oscillators or filters. The gate signal is normally used to trigger envelope generators. The velocity control voltage can be used to control an amplifier, filter or other module. The trigger pulse can be used to trigger sequencers or envelope generators.

- Dual Voice Mode
Creates 2 pitch control voltages and 2 gate signals. In this mode 2 keys can be pressed at a time to create 2 sets of signals.

- Split Keyboard at Octave 1
In this mode the keyboard is split at the first octave creating 2 keyboards. Each section of the keyboard will generate it's own pitch control voltage and gate signal. Useful when you need to control 2 separate voices at the same time.

- Split Keyboard at Octave 2
In this mode the keyboard is split at the second octave creating 2 keyboards. Each section of the keyboard will generate it's own pitch control voltage and gate signal. Useful when you need to control 2 separate voices at the same time.

Scanning Method:
The keyboard is scanned by a microprocessor which constantly looks for pressed keys. When a key is pressed, outputs are generated. If another key is pressed before the first is released, the newest key will take priority. If the second key is released, the first key will retake prority. When generating MIDI, the keyboard will respond to as many as 8 keys at a time.

Specifications:
Physical Size: 41" wide, 3.75" tall, 9.5" deep.
Pitch Output: 0-5V, 1V/Octave response (12bit D/A)
Velocity Output: 0-5V.
Gate Output: 0-5V, active high.
Trigger Output: 0-5V, 10ms, active high.
MIDI Channel #: 1
Power: 12VDC@200ma External wall transformer (110VAC).
User must supply 220VAC model if needed.

Performance:
Tracking Accuracy - The following tracking accuracy chart was taken from a QKB15S Keyboard Controller taken right off the production line. No special calibration, parts, procedures, or modifications were used.