polynominal logo
Synthesizers Drum machines Samplers Effects 8-16bits+ toys HOME

Kawai K4

 

 

 

kawai k4 synthesizer

info Country: Japan
Weight: 7,3 kg
Dimensions: 1020 x 310,8 x 88,5 mm
audio demo trend price : 150€
manual factory patch demo video comments

Kawai K4 (1989)
16 Bit Digital Synthesizer

 

A major upgrade from previous model KAWAI K1 adding resonant filters and a clearer DAC PCM wavetable.

kawai k4 logo
kawai k4 logo

info KEYBOARD 61 keys with velocity and aftertouch.
The main panel features a 16 X 2 lines display, 28 buttons a data slider. On left side 2 wheels for pitch bending plus a modulation assignable to LFO rate/ filter or filter cutoff.

Back panel terminal connectors:
- Midi interface
- headphones out
- main out
- damper pedalswitch input.

ac Power supply PSU - 12V 500 mA+ (original model Kawai PS-121G).





edit TECH
CPU 8-bits UPD 78310G manages 16 voices polyphony based on samples synthesis DMS tone generation. DAC is a Burr Brown 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 possible modes:
- normal
- twin
- double.

structure

 




edit RINGMODULATOR matched pair of oscilaltors sources can be ringmodulated by DIGITAL AM PROCESS in 2 ways:
A- source 1 -> source 2
B- source 3 -> source 4.


structure


edit
PCM WAVETABLE internal 16 bits ROM contains 256 waves split into 2 categories:

- 96 PCM DC digital cyclic: mathematically precalculated fundamental and basic waveforms e.g 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.
Full PCM list HERE


lfo




filter PERFORMANCE
the 16 voice polyphony structure can be assigned to 8 parts each with individual settings:
- split zone
- volume gain
- shift / transpose
- Midi channel
- velocity thresholds.

 

k4 tec



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

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 following 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



fx EFFECT
the internal DSP features 32 patches combinations e.g. reverb, delay, chorus, flanger and distortion/overdrive.



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 Kawai DC-16 and DC-32.

k4 chips
k4 internal

 

 

family EDIT there are many programmers for computer :
- 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

 

 

memory K4 MODIFICATION It is possible to circuitbent the k4 for some experimental glitches effect... if you're into digital textures or noises.
demo Some random bending noises HEAR.


kawai k4 bending


family RELATED FAMILY

k4r K4R rackmount version. More analog outs, but lacks the FX DSP.

 

 

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

  name price pic
virtual VST VIRTUAL K4 VIRTUAL K4 offers a kind of emulation based on samples.
However 2 major problems: It needs an old AWE32 soundcard for DCF filter emulation and It does not seem to work from Windows XP to higher.
PICTURE

 

 

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

Kawai K4 16bit DIGITAL SYNTHESIZER - High Quality Sound- K4 custom sounds Kawai K4 synthesizer sound demo
High Quality Sound custom sounds sound demo


 

 

 

Company: Kawai
Model: K4
Class: synthesizer
Keys: 61
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

 

manual
MANUAL

 

manual
SERVICE MANUAL


manual
FACTORY PATCHES

 

manual
-OS DUMP
-FREE samples collection

 

 

logo

 

 

original scan
wavetable original brochure

 

original scan
wavetable original brochure

 

original scan
wavetable original brochure


original scan
wavetable original brochure

 

original scan
wavetable original advert

 

 

 

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

 

 

logo

 

 

 

KAWAI K4 FOR SALE

KAWAI K4 FOR SALE
CHECK OUT EBAY OFFERS

 

 

 

 

logo

source edit model
awardSPECIAL AWARD:

solid
CHEAP as HELL



comment

REVIEW"Surprising old rompler with nice filter. Good for 90' pads and noisy sounds, anything else is obsolete."

manual manual
- resonant filters -sound edit
-cheap
-plastic cheap built
-good pad/sweeps - outdated samples


Add Comment or Review

 

 

polynominal logo
      For sale Comment Contact
Synthesizers Drum machines Samplers Effects 8-16bits+ toys HOME

all snapshots, sounds, texts copyright Polynominal.com / Eric Pochesci
polynominal.com is not associated or affiliated with Kawai in any manner.

kawai k4 4.0 out of 5 based on 92 ratings. price €150