The Roland CR-78 is an electronic rhythm instrument featuring a micro-computer to generate infinite rhythm patterns. It includes 11 percussion instrument sources and 34 preset rhythm patterns, with additional capabilities for Add Voice, Metallic Beat, and various variation effects like Fill In, Rolling, and Break. The device supports tempo synchronization with external instruments via an External Clock In function.
The manual details the operation of the front and rear panels, including controls for volume, balance, accent, and tempo. It provides instructions for using the Programmer section to create and memorize custom rhythmic patterns using an optional manual switch (TS-1) or pedal switches (DP-1, DP-2). The instrument can store four rhythmic patterns, each consisting of two measures (96 counts), with four voices per pattern.
| Memory Capacity | Four rhythmic patterns, each of two measures (96 counts) |
|---|---|
| Instrument Sources | 11 kinds of percussion instruments |
| Preset Rhythm Patterns | 34 different preset rhythm patterns |
| External Clock Pulse Voltage | +5 - +1 |
| External Clock Pulse Frequency | 8 Hz — 100 Hz |
The power switch should be turned on for a twenty-four hour period at least once every six months to charge the memory backup battery.
The instrument can memorize four rhythmic patterns, with each pattern consisting of two measures (96 counts).
By connecting an external clock pulse to this jack, the tempo of the CR-78 can be controlled by an external instrument.