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Roland CR-78

 

 

 

roland cr78

info Country: Japan
Weight: 5,3 Kg
Dimensions: n/a
audio demo trend price : 700€
manual schematics demo video sample download comments
Roland CR-78
Compurhythm (1979)

 

The first programmable compurhythm series machine ever created: CR-78 has very famous sounds heard in many 80' hits such has Ultravox or OMD tunes.

CR78 exists in 2 design colors: wood and black

logo
edit drum

info DRUM MACHINE main panel features 5 sliders, 31 buttons, 5 switches and 5 knobs.


Back panel terminal connectors:
- main out at low impedance
- main out at high impedance
- trigger out signal +5V pulses for sync out
- trigger input (for clock sync)
- pedalswitch input for variation function
- pedalswitch input for start/stop
- TS-1 write is an input for custom Roland programmer model WS-1.

 


info SOUND mainCPU is a custom 8 bits NEC D8048-C015 with MROM mask.
The CR-78 features 4 channels and generates 14 analog percussions: kick, snare, rimshot, hihat, cymbal, maracas, claves, cowbell, metal beat, bongo (x2), guiro, tambourine and conga (x2).
Basically the drum machine can be played in 2 modes:
- arranger with preset patterns (1)
- sequencer with custom programming (2).

 

inside cr78 circuit


info ARRANGER up to 34 preset patterns with some possible real-time variations:
- cancel mutes instruments
- 8 different FILL-IN
- pattern variations like conga roll
- balance is simple lowpass filter
- fade in/out smoothes the sequences on both intro or outro
- accent amount
- pattern A/B alternate mode.
TIP: Patterns can be combined together.
LIST: rock (x4), swing, samba, enka, disco (x2), foxtrot, mabo, waltz, tango, chacha, shuffle, boogie, beguine, slow rock, bossanova and rhumba.


exemple


info SEQUENCER this special function requires the optional programmer model WS-1.
Entry notes is with step programming type like note or pause (like Boss DR-55 or Stix ST-305) a bit machine-like method.
SYNC uncommon bi-directional sync at uncommon 12 PPQ resolution.


seqeuncer



info MEMORY
:
- 4 programmable patterns
Battery model 3.6V NiCad, leaks after many years- check it soon or later.

inside cr78 circuit



info RELATED FAMILY:

cr68

CR-68 same presets and same sounds, but it is NOT programmable and it lacks the FADE IN-OUT option. Cr-68 is much more common on the Market and thus less valuable VIDEO

 

Roland Cr800

CR-800 very rare: an hybrid between Cr78 and cr68 with internal speaker.


(picture from EBAY auction)

 

Roland Cr800

CR-8000 successive Compurhythm model

ws1 Ws-1 programmer

 


demo
AUDIO DEMO

demo pattern demo 1
demo pattern demo 2
demo pattern demo 3


 

effet VST PLUGIN / SAMPLED VERSION there are some free and commercial samples set:

  name price demo
Waveshapper

-boxedear

-logic cafe

FREE
samples
demo



video VIDEO CLIP SELECTION

Roland CR-78 High Quality Roland CR 78 - Jupiter 4 Phil Collins demonstrates Roland CR-78
demo1 with Jupiter 4 Phil Collins demonstration

 



Company: Roland
Model: CR-78
Class: Drum machine
Dates: 1979
Price: 700€
Synthesis: analog
Polyphony: 4 voices
Sounds: 14 percussions
Preset: 34 rhythms
Sync: 12 ppq

Demo: 4

 

manual
MANUAL


manual
service manual

 

cr78

 

original scan
info original brochure

 

original scan
info original brochure

 

original scan
info original brochure

 

original scan
info original brochure

original scan
infoinfo mug-o-78



enola gay
video Cr78 rhythm: OMD ENOLA GAY


John FOXX underpass
videoCr78 rhythm: John FOXX underpass

 


Roland CR-78 FOR SALE

cr78 for sale
CHECK OUT EBAY OFFERS


 

motherboard cmos capacitor NEC D8048-C015
Click to zoom


Dates: 1979
Price: 700€
Synthesis: analog
Polyphony: 4 voices
Sounds: 14 percussions
Preset: 34 rhythms

Sync: 12 ppq


comment


REVIEW "A chesy classic! for this reason it is considered as collector item and now it is quite pricey"

manual manual
- classic collectible - expensive
- pure analog breed
- 12 PPQ sync


COMMENTS

 

 

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all snapshots*, sounds, texts copyright Polynominal.com / Eric Pochesci
*CR800 picture on EBAY

polynominal.com is not associated or affiliated with Roland in any manner.

roland cr78 4.0 out of 5 based on 15 ratings. price €500