MC-4 is a new synthesizer controller designed to expand the range of
any synthesizer and take the work out of complex composition.
A digital sequencer, the MC-4 will accept data entered either
from its numerical keyboard or from the CV signals from
a keyboard synthesizer in real time.
Real time input is possible using either CV plus gate or
data may be entered separately by loading the pitch information first
and using the Gate Rewrite function to later enter the rhythm.
It is possible to listen to previously inputted data while entering
Each channel has two independent CV outputs. These outputs
are available for the control of nearly any control voltage function
on a synthesizer. When the note values (Gates) remain the same, one
channel may be used to voice two note chords.
A Multiplexing function is also included on each channel.
This can be used to control portamento, vibrato, or similar synthesizer
A wide variety of editing functions simplify composition on the
MC-4 including; Copy, Insert, Delete, Forward Step, and Back Step.
Repeat commands can be used on each channel to specify repeat
times and can also be used for easier data entry and for more economical
use of memory.
CV and other data can be transposed on each channel. Data
can also be copied with transposition. These functions are very helpful
when inputting arpeggio and bass patterns.
MC 4 - back panel
Step and gate time data can be preset. Once frequently used step
and gate time values are preset, data can be entered simply by modifying
Tempo can be entered by using a corresponding numerical value.
The Tempo is then variable by -50% to a +100%.
Total playing time can be displayed and tempo can be accurately
set to any pre-determined playing time by adjusting the Tempo Control
while monitoring the time value.
Remaining memory capacity can be indicated on the display as a
Data can be stored on cassette tapes. A data number is assigned
when information is stored on tape and the data number is then used
during loading, search and read procedures. Whenever a data number is
not used during loading, the cued data is used in its place.
Input and output synchronization jacks using an FSK code allow
tape synchronization with a multi-track tape recorder. Synchronized
input and output pulses can be used for parallel playing of the MC-4.
Sync In/Out DIN jacks are also provided and can be used to synchronize
the performance of rhythm machines and other machines. They can also
be used to synchronize two or more MC-4's.
The Tempo CV input controls tempo by means of an external voltage.
Tempo can also be changed via CV data by connecting a CV input with
any CV output. By doing this, total playing time can be determined by
the controlling tempo.
The EXT START and EXT STOP/CONT PLAY jacks allow the user to control
the start/stop performance of the MC-4 by means of an external foot
pedal or an external voltage.
Memory capacity: 11,500 notes (48 K byte)
Output: 4 channels (CV-1: 0 ' 10.42 V, 125 steps 83.3 mV/step,
CV-2: same as the CV-1 , Gate: Off=OV,On= 12 V, MPX: Off=O V, On= 12V)
Keys: Numeric (0 - 9), Enter/start, Measure end/stop/continue,
Back step/total time/+, Forward step/step error/-, shift, Insert, Delete,
Copy (trans-pose), Repeat, Cursor (E-,->)
EXT input: CV (0 ~ 10.42 V), Gate (threshold +2.5 V), Calibration
knob *Shift map: 0/available memory (%),1 /CV-1, 2/step time, 3/gate
time, 4/CV-2, 5/MPX, 7/CV-1 + gate, 8/gate rewrite, 9/tune
Mode: Selector (edit/play/CMT)
Total tune: Control knob (±100 cents)
Tempo: Tempo knob (-50%' +100%), Tempo CV input (0 ~ 10.42 V)
SYNC: select switch (DIN/INT/tape, EXT)
DIN SYNC: DIN jack, Select switch (input/ output)
EXT SYNC: Input (threshold +2.5 V), Output (0 ~ 5 V)
CMT/tape SYNC: Input, Output EXT control: Start, Stop
Dimensions: 471(W) x 124(H) x 348(D) mm (18.6" x 13.7"
Weight: 6.3 kg (13.9 lb.)
Accessory: MTR-100 connection cord
When connected with the MC-4, the MTR-100 allows you to transfer data
in both directions between the two units, with operation controlled
by the MC-4 keys.
Memory capacity: 250 K byte Dimensions: 218(W) x 118(H)
x 348(D) mm (8.6" x 4.65" x 13.7") Weight: 3.4
kg (7.48 lb.)