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Yamaha TX81Z

 

 

 

yamaha tx81z


audio demo Country: Japan
Weight: 3,4 kg
Dimensions: 480 (w) x 282 (h) x 45,2 (d) mm
audio demo trend price : 100€
manual factory patch demo video sample comments

Yamaha TX81Z (1987)
Multi Timbral FM tone generator


Rack module featuring a FM variation of traditional DX 6OP: a DX7 budget spin-off with different hardware and cheaper IC FM.

info The Tx81Z is still especially appreciated for the low price and a famous electro bass preset LATELY BASS

logo omb5
tx81z technical data

info RACKMOUNT one standard unit height.
Main panel features a 2 x 16 lines display and 11 push buttons.


Back panel terminal connectors:
- main outputs
- aux outputs
- Midi interface
- tape interface for data storage.


Front panel terminal connectors:
- headphones out.

 

 

 

edit TECH CPU HD63803XP Hitachi manages 8 voices polyphony- DAC is based on a IC YM3012. Main IC chip YM2414B features 4 OP + 8 combinations unlike previous DX7 synthesis based on a 6 operators system with just pure sinewave and 32 combinations algorithms.


algorithms algorithms

STRUCTURE The tx81z ROM contains 1 stored digital half sinewave on a lookup table that can be read in different way and speed (similar to PD synthesis concept) creating 7 extra harmonics sinewaves variations with partials overtones and fundamentals fixed settings.
edit NOTE: The module does not feature "more waveforms" (like subtractive synthesis) thus not more "powerful" than traditional DX7 as this trick just compensates the lacks of 2 more OP.






edit SYNTHESIS
there are 4 sinewave operators organized as algorithms, assigned as either carrier or modulator, linked between them on different pathways interacting on their harmonic contents depending on the varable feedback strength.
- carrier defines the amplitude and the spectral frequency
- modulator sets the sound timbre and the relative harmonic contents.


algorithn tx81z demo HEAR Harmoncs variations
scales SEE
PICTURE

 

ALGORITHM Tx81Z features several OP signalpaths combinations with frequency ratio or fixed frequency: the output is fed back to its input with 7 feedback levels, as general rule, high values feedback results in richer harmonic contents.
NOTE: the processor design reveals some limits and cannot layer some particular algorithm combinations.


 

edit PERFORMANCE the FM voices can be assigned to 8 parts each with independent settings:

tx81z tech - analog mix level
- Midi channel assign
- effect amount
- panning position
- stack mode Eg: 4 voices or 8 monophonic
- portamento with glide time
- analog out assignment.

 



lfo LFO
there are 2 delayed and retriggerable modulators (shapes: sawtooth, square, triangle and sample & hold, frequency range from 0.007 Hz to 50 Hz).

LFO

LFO DESTINATIONS:

- LFO1 to amplitude
- LFO2 to pitch.

demo LISTEN: all LFO shapes



adsr ENVELOPE 4 EGs: each OP features 1 amplitude EG (4-segments) + 1 general shift.
Very simple Key tracking scale less sophisticated than previous DX line.





effect EFFECTS
not a real DSP but 3 faked simulated by a Midi notes trick reducing polyphony.
- pan moving: stereophonic path with follow velocity or LFO from left to right or vice versa
- chords mode: handles up to 4 notes
- delay: with possible pitch shift and adjustable feedbackdemoHEAR FX delay




memroy MEMORY
:
- 128 ROM patches (preset list)
- 32 RAM patches
- 24 RAM performances
- 2 RAM microtuning tables for non-standard intonation
- 11 ROM microtuning preset e.g Equal, pure, major-minor, Vallotti and Werckmeister.
STORAGE
: No external storage but full Sysex dump and edit by Midi or tape dump; note that MIDI Sysex strings are NOT compatible with 6OP DX line.

tx81z motherboard

LEFT - BATTERY REPLACEMENT is quite easy but involves soldering a new lithium 3V CR-2032 on the mainboard( main motherboard

 

- click to magnify -


 

effectOS Midi response has some freezes with data flows (depends also on the OS EPROM official from 1.0 to 1.6). Download LATEST OS V1.6 BIN

os 1.6 bin

 



scales EDITOR
there are many computer-based editors:
- Ctrlr (PC free) PIC
- Midiquest (PC $$) PIC
- noize (PC$$) PIC
- TX81Z Programmer ($$) PIC
- YSEDITOR (ATARI ST) PIC
- Steinberg synthwork (ATARI ST) PIC
- Atari: caged 4 OP artist (ATARI ST) PIC
- MAX MSP yamaha tx81z editor PIC
- VSTizer TX81Z (PC $$) PIC BELOW

txz81z editor

 

 

scales RELATED FAMILY 4 OP:

yamaha dx9 yamaha dx21
dx100 dx27
DX-9 (1983) first 4 OP incompatible with other 4 Op DX line VIDEO

DX-21 (1985) bitimbric layer with chorus and pitch EG

DX-100 (1985) same as dx21 with minikeyss VIDEO DX-27 (1985) simplier DX 21 version - also a "S" with speakers VIDEO
       
fb01

yamaha dx11

yamaha ys200 yamaha-v50
Fb-01 (1986) simple 4OP module- also TQ5 module with sequencer VIDEO

DX-11 (1986) a Tx81z version with 8 waves VIDEO

YS-200 (1988) consumer 4 Op version with sequencer VIDEO V-50 (1989) top 4 op series with sequencer + drum machine VIDEO


 

effet VST PLUGIN / SAMPLED VERSION no official VST emulation, but some FM emulator (6 or 4 OP)

  name price
sample download

polynominal

effet

free sample pack!

65 mb free samples:

- FM FARFISA
- DX TINES
- MELLOW SQUARE -LATELY BASS

Free donation:

effet

dexed VST plugin -DEXED
-MDA DX10

-OXE FM SYNTH
-VX7
-HEXTER
free VST


 

demoAUDIO DEMO

demo You spinme round, 100% tx81z
demo Mix techno1 (+sampled drums)
demo Mix techno2 (+sampled drums)
demo Mix techno3 (+sampled drums)
demo Mix techno4 (+sampled drums)
demo Mix techno5 (+sampled drums)
demo EP: tines rhodes
demo EP: celesta
demo EP: Wurlitzer
demo Organ: hammond Blues
demo Organ: sixties Farfisa
demo Organ: light my VOX
demo Brass: 1
demo Bell: dx like
demo PlucK: banjo
demo Synth: trill
demo Synth: smalltown
demo Synth: pacman
demo Synth: modulator
demo Synth: light
demo Synth: lucy sky
demo Synth: minimoog FM
demo Synth: abused LFO
demo Synth: very soft
demo Synth: granular weird
demo Synth: 8 bits
demo Bass: like a Sh101
demo Bass: liner
demo Bass: saturnay niigghhttt
demo Bass: short bass liner
demo Bass: EBM
demo String: FM 4OP
demo Pad: metal pound
demo Pad: Arrakis
demo Pad: Darkvoice
demo Pad: sounds like a 90 games
demo Drums: tablas feedback variations
demo Drums: old cheesy drum machine
demo FX: robot talk
demo FX: atmos
demo FX: burning
demo FX: chaos
demo FX: frequency
demo FX: grany
demo FX: reverse sounding
 
demo XP: all harmonic variationswaves
demo XP: all LFO shapes
demo XP: stereo panning LFO
demo XP: portamento glide
demo XP: FX delay
demo XP: FX reverb

video VIDEO SELECTION

TX81Z Trackdriver Presets Yamaha TX81z Yamaha TX81Z Performance Mode
You spin me round demo, all made on TX81z ! dedicated to Pete Burns (RIP). demo1 Performance Mode


Company: Yamaha
Model: TX81Z
Class: Synthesizer Module
Rack : 1 unit
Dates: 1987
Synthesis: FM
FM chip: YM2414B
Algorithms: 8 models
Polyphony: 8 voices
Multitimbric: 8 parts
Oscillator: 4 OP
LFO: 2 modulators
Filter: none
Microtuning: 13 presets
Effects delay
Memory: 32 RAM slots
Midi: IN / OUT / THRU
CPU: HD63803XP
DAC: YM3012
OS: latest is 1.6V
Demo: 52

 

yamaha tx81z

 

manual
MANUAL

manual
SERVICE MANUAL

manual
GET FACTORY SET

1


tx81z demo


 

 

original scan
scales Original advert

 

original scan
scales Original Brochure

 


RELATED LINK

TX81ZT project

TX81ZT project

 


RELATED LINK

lately bass

LATELY BASS PAGE

 


RELATED LINK

opl3

4OP ADLIB
PC soundcards.


 

TX81z for sale

Yamaha TX81z for sale
CHECK OUT EBAY OFFERS

 

tx81z demo

left side yamaha tx81z panel logo printed
awardSPECIAL AWARDS:
solid
solid
Solid as a tank! Cheap as Hell!
comment

REVIEW " Aggressive digital sound at low price! needs a lot of time for programming but--- Power for few bucks! "

 

manual manual
- sinewave variations - poor edit interface
-cheap
-midi buffer
-reliable -polyphony

tx81z
-->THANKS TO ALL THOSE GUYS WHO RIPPED MY PICTURE (ABOVE) DURING YEARS. F%%! YOU <---
yamaha tx81z


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Yamaha TX81Z Yamaha TX81Z FM Tone Generator
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