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Kawai K4R

 

 

 

kawai k4r

info Country: Japan
Weight: 2,8 kg
Dimensions: 1020 x 310,8 x 88,5 mm
audio demo trend price : 150€
manual   factory sounds demo video comments

Kawai K4R
Digital Synthesizer Module (1989)

 

Rackmount module version of Kawai K4 synthesizer with cycled waveform wavetable and resonant filters.

kawai k4r logo
edit k4r

info RACKMOUNT the main panel features a 16 x 2 lines display, 32 buttons and a data slider.

Back panel terminal connectors:
- Midi Interface
- main out
- 6 assignable analog outputs.


ac Power supply PSU 12V at least 500 mA polarity negative center - original model is PS-121G.





editTECH CPU 8-bits UPD 78310G manages 16 voices based on samples synthesis
called "DMS tone generation" DAC is a Burr-Bown PCM66P.

STRUCTURE: a basic K4 patch is composed 1 or 2 PCM samples or sources that can be set and routed to filter in 3 different modes:
- Normal
- Twin
- Double.


structure



edit RINGMODULATOR matched pair of oscilaltors sources can be ringmodulated by DIGITAL AM PROCESS in 2 different manners:
- source 1 modulates source 2
- source 3 modulates source 4.

 

structure


edit
WAVETABLE internal 16 bits ROM contains 256 PCM waves organized into 2 categories:
-96 PCM DC digital cyclic: mathematically precalculated fundamental and basic waveforms like sinusoidal, analog square, voice formants, organ additive and some short transients.
- 160 PCM acoustic samples categorized into 4 subgroups: drums, multi, block and reverse & loop.


lfo


filter PERFORMANCE system manages up to 8 parts all variable settings:
- split zone
- volume
- transpose
- Midi channel
- velocity thresholds.

cpu

 

filter FILTER IC K008-FP handles 2 digital resonant filters featuring a -12 dB slope each.
Filters can be chained in serial or parallel mode and scream at high resonance value, which is by the way quantized into 7 scaled steps. Another useful function is the Key tracking mode at 50% cutoff value to lower or higher octaves.

 

cuoff



adsr ENVELOPE
6 EGs:
- 1 EG FILTER 1: 3 segments + 1 time level
- 1 EG FILTER 2: 3 segments + 1 time level
- 1 EG (for each SOURCE) amplitude: a 3-segments + 2 time levels.
TIP: The sounds can be played according to 8 different non-editable velocity curves.


adsr

 


lfo LFO
single delayed main modulator (shapes: triangle, saw, square and random) and 3 destinations:
- LFO to pitch
- LFO to filter 1
- LFO to filter 2.
A simplified second LFO acts as a vibrato sharing same LFO1 waverform.

LFO


 

memory MEMORY:
- 64 RAM slots for patches
- 64 RAM performances
Sounds and setting may be saved to standard Midi sysex dump or recorded to Kawai RAM cards model DC-16 or DC-32
Battery replacement: simple CR2032 in a holder, so soldering is involved (PIC below)

mode

 



memory OS UPGRADE
Internal EPROM 27C512 64 kb (P207 for K4r / P206 for K4) latest should be 1.4.
DOWNLOAD BINARY (thanks to Alfred Semper).


eprom os K4r



family EDIT
there are many programmers for computer like
- Soundquest (commercial PC/MAC) PIC
- Sounddiver (out of business)
- K4 WIN (shareware old PC) PIC
- K4 patch editor (freeware old PC) PIC
- K4 editor (freeware ATARI ST) PIC
- Musicode K4 Voice Development System (? ATARI ST)
- K4 editor (shareware Commodore AMIGA) PIC
- K4/K4R Ipad editor (commercial IOS) PIC BELOW


ipad editor



family K4R RELATED FAMILY

k4

K4 61 keys keyboard version, same but it features an effect DSP, but lacks extra analog outs.

xd5 XD5 similar to K4r, but different wavetable. XD5 is aimed to percussions and drums sounds.


 

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

  name price  
virtual VST

VIRTUAL K4

DOWNLOAD

A kind of emulation based on samples.
However 2 major problems:
- It needs an old AWE32 soundcard for DCF filter emulation
- It does not seem to work from Windows XP to higher.
demo


 

demo AUDIO DEMO

demo favourite: indastria pad
demo favourite: resonance trick
demo favourite: on the run
demo favourite: choir
demo favourite: DC cycle
demo favourite: resonance pad
demo favourite: 8 bits NES
demo favourite: ambient bells
demo piano: yes lofi
demo piano: creepy
demo organ: sixty
demo organ: B3?
demo choir: mixed
demo choir: mixed 2
demo bass: performance
demo bass: quick arpeggio
demo bass: resonance 100%
demo bass: demo with korg ER1
demo Drum: the kit
demo Drum: morphing tr808
demo Drum: looping
demo pad: with LFO
demo pad: texture
demo pad: performance
demo pad: resonant
demo pad: eerie
demo synth: brass filtered
demo synth: quite clavinet
demo synth: early digital
demo synth: sid beret
demo synth: sequenced
demo synth: bellish
demo synth: ppg?
demo synth: commodore64
demo synth: bellish2
demo synth: LFO DCF
demo synth: tremoled
demo synth: roland tb303
demo synth: lounge chord
demo synth: k4r fake delay
demo synth: square pulse
demo  
demo FX: LFO DCO
demo FX: chaos
demo FX: 4 bits aliased
demo FX: LFO galore
demo FX: harsh
demo FX: morse sine
demo FX: click pops
demo FX: fixed
demo FX : experimental
demo FX: harsher
demo BENDING! 1
demo BENDING! 2
demo BENDING! 3
demo BENDING! 4
demo BENDING! 5
demo BENDING! 6
demo BENDING! 7
demo BENDING! 8
demo BENDING! 9
demo BENDING! 10
demo BENDING! 11

 



video VIDEO SELECTION

DEMO Presets Synth Kawai K4r Kawai K4 - examples of sound Kawai K4r 16 bit Digital Synthesizer Module - High Quality Sound
Presets Synth one hour of sounds High Quality Sound

 



Company: Kawai
Model: K4R
Class: Module synthesizer
Dates: 1989
Price: 150€
Synthesis: PCM rompler
N.Wave: 256
Polyphony: 16 voices
Multitimbric: 8 parts
Filter: 2 digital lowpass
LFO: 1
Effect: 32
Memory: 64 RAM slots
Demo: 63

 

 

hires thumb

 

 

manual
MANUAL

manual
SERVICE MANUAL


manual
K4R FACTORY SET

manual
-FREE samples collection

 

logo

kawai k4 brochure
wavetable original brochure

 

 

 

16 bits digital synthesizer
wavetable original brochure

 

 


original scan
wavetable original brochure

 

 

 

kawai k4 borchure
wavetable original brochure


Kawai K4 16bit DIGITAL SYNTHESIZER - High Quality Sound-
videoeffet k4 player!

 

logo

KAWAI K4R FOR SALE

KAWAI K4R FOR SALE
CHECK OUT EBAY OFFERS

 

 

logo

burr brown PCM 66p kawai IC Eprom IC OS
awardSPECIAL AWARD:

solid
CHEAP as HELL


comment

REVIEW"Compact version of classic K4 minus effects Good for 90' pads and noisy sounds"

manual manual
- resonant filters -sound edit
-cheap
-misses k4 fx
-good pad/sweeps - outdated samples

 

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kawai k4r 4.0 out of 5 based on 96 ratings. price €150