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

Yamaha TX-802

 

 

 

yamaha tx802

info Country: Japan
Weight: 5 Kg
Dimensions: 480 x 287 x 94,5 mm
audio demo trend price : 200€
manual factory patch demo video comments

Yamaha TX-802
FM Tone Generator (1988)

 

Yamaha DX-7 model II Rackmount module version adding great performance enhancements.

logo tx802
tx802 main edit

info RACKMOUT MODULE 2 rack height units.
The main panel features a 40 x 2 lines LCD with active matrix backlight, 28 buttons and a slot for memory cartridge.

Back panel terminal connectors:
- Midi interface
- main signal out
- 8 individual analog out

Front panel terminal connectors:
- headphones.






edit VOICE
 main core 8-bits Hitachi HD63C03YP manages 16 voices polyphony.
The IC YM2604 chip generates 6 sinewave digital oscillators with individual volume, tuning and scaling levels.

Fm key  Scaling Burr Brown PCM54HP D/A converter has been changed from classic Yamaha DX-7 / DX-5 previous BA922 for a clearer sound, especially on high frequencies.



acFM SYNTHESIS Tx802 6 sinewave digital oscillators operators (or OP) organized as algorithms, assigned as carrier or modulator linked between them on different pathways interacting on their harmonic contents depending on the varable feedback strength.

function - carrier: defines the amplitude and the spectral frequency
- modulator: sets the sound timbre and the relative harmonic contents.

 



ac ALGORITHMS
modules features 32 signal paths with frequency ratio or fixed frequency.
The output is fed back to its input with 7 different levels feedback, as rule of thumb: high values feedback results in richer harmonic contents.

function




edit PERFORMANCE
original DX7 II multitimbric feature has been improved with no less than 8 parts with individual settings and playmodes:

- volume / panning
- Midi channel
- stack voices unison
- voice assigment (a kind of voice rotate)
- Microtuning:11 Scales presets and 1 editable users
OP voice can be assigned to monophonic mode with variable portamento rate and variable random ptch fluctuation for a kind of analog feel.
interface



lfo LFO up to 2 modulators (shapes: sine, triangle, saw up/down, square and sample & hold) with adjustable start delay and sync retrigger:

LFO
- LFO PMD modulates pitch
- LFO AMD processes the amplitude





adsr ENVELOPE system is based on the YM3609 generates 7 EGs:

tone fm
- 1 EG pitch: 4 segments + 4 times
- 1 EG per OP (6 in total) 4 segments + 4 times
.
Another important function is the scaling level a very precise Key follower featuring 4 various linear or exponential curves with variable depth.




adsr MIDI implementation features full Sysex editing but just a few basic CC # like pitch bend, modulation, breath or aftertouch.TIP: A second TX unit can be linked for extra polyphony using the ODD-EVEN function.



adsr MEMORY
:
- 128 ROM voices
- 64 RAM voices
- 64 RAM performances, optional 16 Kb cartridge model RAM4 doubles vailable memory.
TIP TX-802 is compatible with DX-7 mk1 cartridges but different geometry requires a special adapter model ADP-1 to access to the vast library.

tx802 motherboard

- LEFT - battery replacement internal CR-2032 3V lithium battery soldered to the main board.

- click to enlarge pic -

 

 

resetOS is burnt on XB224- IC6 - a 27C256 eprom

OS 1.5

DOWNLOAD

LATEST OS BIN

 



lfo EDITOR
TX-802 has its own logic but still deep edit is not an easy task! fortunately there are a LOT of software editor for DX7 /DX7 MkII that cover 95% of functions:

Atari ST : Dx-android, Dx expert or caged ST (PIC)

PC-based: Soundiver, Midiquest, DX-manager, Synlib and others.

MSX: YRM 103-102 cartridge Voicing program / YRM304

IOS: Yamaha DX7/TX7/TX816 Editor (pic below).
tx802 motherboard

 



adsr RELATED FAMILY:


LINKS: TX802 - Tx816 - Tx7 - Sy99 - DX200 - DX5 -
dx7 family tree



 

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

  name price
dexed VST plugin -DEXED
-HEXTER
-MDA DX10
-OXE FM SYNTH
-VX7

free

dexed FM emulation


 

demo AUDIO DEMO

demo lounge organ
demo performance split
demo bright performance
demo 60 scifi
demo fake delay
demo atmosphere
demo feedback variation
demo dark sequence
demo electro arpegggio
demo church spirituality FM

 

 

video VIDEO SELECTION

Yamaha TX802 Demo pure TX802 Sound Demo YAMAHA TX802 Demo Track
Demo Sound Track


Company: Yamaha
Model: TX-802
Class: synth module
Rackmount: 2 units
Display: 40 x 2 lines
Dates: 1988
Synthesis: FM
Operators: 6 OP
Algorithms: 32 models
Polyphony: 16 voices
Multitimbric: 8 parts
LFO: 2 modulators
Memory: 128 slots
MIDI: IN / OUT / THRU
IC: YM2604
DAC:
BB PCM54HP
OS: latest is V1.5
Demo: 6

 

manualMANUAL

manual
SERVICE MANUAL


manual
FACTORY PATCH

reset

Factory Reset procedure

1) Power ON and hold [8] and [9] buttons.
2) Press [ENTER]
3) Press the [YES] then advance to Test #56.
4) Press [ENTER]
5) Press [YES]
6) When Test #57 displays, [YES]
7) Turn off and on
.

to know your Tx802 OS version , : hold down 8+9 when turning on"




manual
more demo


original scan
lfo original brochure



original scan
lfo original brochure



original scan
lfo original brochure

 

 

 


adsr

THE GEEK TEST

test

Second DX7 version offers some update and sounds a bit different, mainly for the different DAC with higher resolution. I made a little comparison test:

DX7 Vs DX7II

 

TX-802 for sale

Yamaha TX802 Demo
CHECK OUT OTHER EBAY OFFERS

 

 

EPROM os circuit memory tx802 motherboard
awardSPECIAL AWARDS:
award award
Bang for the Buck Nervous edit

comment

REVIEW "Tx-802 is pretty hard to edit especially if you're not an FM addict. But still fantastic sounds and great improved performances functions from classic dx7 - performance mode is simply one of the best! IMPORTANT: Reported faulty YM EG generator, give it a good try! "

manual manual

- FM
-edit interface
-multitimbric
- bulky
- separate outs  

 

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

Yamaha TX802 Yamaha TX802
70 out of 100 based on 1 user ratings
150 to 250 from 1 sellers Sellers:
...