Roland Compurhythm CR-78 User Manual

ISS Roland
COMPURHYTHM
CR-78
OWNER’S MANUAL
•An infinite number of rhythm patterns are yours be¬
cause of the adoption of a micro-computer in this
instrument.
•With 11 kinds of percussion instruments as the sound
source, there are 34 different preset rhythm patterns.
Along with this, 2 kinds of ADD VOICE and METAL¬
LIC BEAT, plus CANCEL VOICE which cancels out
different instrument sounds of each pre-set rhythms
offers many variations on the rhythm patterns.
•FILL IN, ROLLING and BREAK produce variations in
rhythmic progression.
•LONG and SHORT FADE IN and FADE OUT are pos¬
sible.
•With the importance of rhythm flow in mind, the
rhythm pattern will change from the next measure.
•ACCENT makes the rhythms musical.
•With the TRIGGER OUT and EXTERNAL CLOCK IN
functions, tempo synchronization with externa! in¬
struments such as a sequencer is made possible.
«CAUTiON»
Turn on the power switch for a twenty four
hour period at least once every six months
in order to charge the memory backup bat¬
tery when this machine is not in regular use.
This unit uses a battery backup to protect the
user-loaded memory data when the power switch
is off. If the battery loses its charge, the memory
will be lost.
If it is not charged for a long period of time,
the battery may swell and leak gas which
may damage this unit.
Plugging or unplugging the cord while the power
switch is on might cause the built-in computer to
malfunction. Therefore always plug in the cord
before turning on the power.
(If malfunction of the computer occurs, turn off
the power switch and 5 seconds later turn it on
again !

Roland Compurhythm CR-78 Specifications

Power

trigger pulse out	OFF: 0V/ ON:+15V pulse
sound source ext. clock	OFF:0V/ ON: +5 - +15V pulse, min. 5ms width
power consumption	13W

Weight and Dimensions

dimensions	300(W) X 280(D) X 205(H)mm
dimensions (inches)	11.8"(W) X 11.0”(D) x 8.1 "(H)
net weight	5.5 kg

Summary

Names and Functions of the Components

Front Panel Controls

Details the various knobs, buttons, and switches on the front panel of the CR-78, including volume, tempo, and rhythm selection.

Rear Panel Connections and Controls

Explains the function of rear panel jacks for output, input, and programming, as well as switches for trigger pulse selection.

Programmer Section Operation

Programming New Rhythms

Step-by-step guide on how to create and memorize custom rhythmic patterns using the CR-78's programmer.

Playing Back Memorized Patterns

Instructions on how to recall and play previously programmed rhythmic patterns.

Memory Clear Function

Procedures for erasing individual voices or entire programmed rhythm patterns.

Operation Instructions

Automatic Rhythm Control

How to set up and use the CR-78 for automatic rhythm variations using the AUTO/MANUAL switch.

Manual Rhythm Control

Instructions for manually inserting rhythm variations using the MANUAL button and MEASURE SELECTOR.

Tempo Control with Clock Signal

Guidance on synchronizing the CR-78's tempo with an external clock signal.

Specifications and Precautions

Technical Specifications

Detailed list of the CR-78's technical attributes, including sound sources, controls, dimensions, and power consumption.

Operational Precautions

Important warnings and advice for safe and optimal operation, covering electrical interference and maintenance.