Roland CR68 Compurhythm

Roland Cr-68

Compurhythm (1979)

A cut-downd version of iconic Roland Cr-78 with same rhytms but not programmable and it lacks some features

OVERVIEW main panel features 21 buttons, 2 switches and 5 knobs.
CR68 exists in 2 design colors: wood and black

RELATED MODELS:
- Roland Cr78: very similar with programming and more features, but same sound.
- Roland CR-800 very rare: an hybrid between Cr78 and cr68 with internal speaker.
- Roland CR-8000 successive Compurhythm model

Terminal connectors:

- main out at low impedance

- main out at high impedance

- pedalswitch input for variation function

- pedalswitch input for start/stop
- Clock trigger out

OSCILLATORS CPu uPD8048 is an 8-bit parallel computer fabricated on a single sillicon chip. The 8048 contains a 1k x 8

ROM program memory, a 64 x 8 RAM memory. Basically the drum machine can be played only pushing preset patterns (and combos), it does not features programmation / Midi / trigger.

SOUNDS the CR-68 features 4 channels and generates 12 percussion: Bass Drum, Snare Drum, Rim Shot, Hi-hat, Cymbal, Maracas, Claves, Cow Bell, High Bongo, Low Bongo, and Low Conga

ARRANGER it features 34 different preset rhythms, 17 buttons, plus a toggle switch choosing from bank A and B. There is a knob to select between 5 "variations", as well as controls for volume, tempo sound balance and drum accent.

LIST: rock (x4), swing, samba, enka, disco (x2), foxtrot, mambo, waltz, tango, chacha, shuffle, boogie, beguine, slow rock, bossanova and rhumba.

Roland CR68 Specifications

Company: Roland

Model: CR-68

Class: Drum machine

Dates: 1979

Price: 500€

Synthesis: analog

Polyphony: 4 voices

Preset: 34 rhythms

Sync: 12 ppq

• RHYTHM SELECTION BUTTON

ROCK 14. DISCO 1.2, WALTZ. SHUFFLE, SLOW

ROCK, SWING, FOX TROT, TANGO. BOOGIE, ENKA

(a genre in Japanese music), BOSSANOVA.SAMBA.

MAMBO. CHA CHA, BEGUINE, RHUMBA

• SOUND SOURCE

BASS DRUM, SNARE DRUM, RIM SHOT. HI-HAT.

CYMBAL, MARACAS, CLAVES, COW BELL, HIGH

BONGO, LOW BONGO. LOW CONGA

• VARIATION SELECTOR

FILL IN 1-7, BREAK, RHYTHM IA-B). ROLLING- HB. SD

• MEASURE SELECTOR.

• CONTROL KNOB LEVEL, BALANCE. ACCENT. TEMPO

• SWITCH (BUTTON) :5

START/STOP. RHYTHM PATTERN SELECTOR.

AUTO/MANUAL SELECTOR, MANUAL. POWER

• JACK OUTPUT

HI: 220Kohm LOW: 10Kohm max. OdBm

FOOT SWITCH

START/STOP. VARIATION (DP.I)

TRIGGER PULSE OUT

OFF:OV : ON:+ 15V pulse

• TRIGGER PULSE SELECTION SWITCH

8 beat, 16 beat, combination

INDICATOR

TEMPO (also used as power switch pilot lamp)

• POWER SUPPLY VOLTAGE

• POWER REQUIREMENTS

100V, 50/60 Hz

Weight: 4,5 Kg

Dimensions: 78 × 28,6 × 8,8 cm

Roland Cr-68

Compurhythm (1979)

Overview

Sound

Rhtyhm Arranger

Roland CR68 Specifications

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Roland Cr-68

Compurhythm (1979)

Overview

Sound

Rhtyhm Arranger

Roland CR68 Specifications

Leave a comment

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