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Yamaha TG-55




Yamaha Tg55

info Country: Japan
Weight: 4,2 Kg
Dimensions: 480 (w) x 44 (h) x 330 (d) mm
audio demo trend price : 100€
manual demo video comments

Yamaha TG-55
Tone Generator (1990)


Yamaha SY-55 synthesizer rackmount expander version minus the internal sequencer

The Tg55 is a module based on internal samples with resonant filters and a true synth structure for edit.

edi tmode
edi tmode

info RACKMOUNT single rack unit.
Main panel features a 16 X 2 lines display, 18 buttons and a data encoder.

Rear panel terminal connectors:
- Midi interface
- main signal out
- AUX analog out

Front panel terminal connectors:
- headphones
- PCM card slot (see expansion)
- data card slot.


edit TECH main CPU based on H8/523 manages up to 16 voices polyphony based on 16-bits AW2 Advanced Wave Memory 2 synthesis (IC YM7119 also filter) - the TG DAC is analog device AD1856N.

sy55 architecture  

STRUCTURE the patch main architecture is composed by 1, 2 or 4 samples or ELEMENTS.
Each ELEMENT is a sample from the wavetable and features independent parameters:
- volume mix
- pitch tuning
- effect amount
- keyboard zone.
Special drum kit mode assigns 61 PCM in a single patch.



WAVETABLE internal 2 MB ROM contains 74 PCM waveforms sampled at 32 / 48 kHz organized 3 categories: acoustic, digital and drums. FULL INTERNAL PCM LIST

wavetable - 50 PCM acoustics e.g piano, organs, guitar, brass ... demo piano
- 8 PCM basic digital e.g sawtooth, square, pulse ... demo square
- 16 PCM acoustic drums and percussions

edit EXPANSION a collection of set of DATA / DATA +PCM cards were available.
AI2 PCM cards are compatible, so you can use SY-99 cards , TG77 RY30 on all 55 series.
->This list is not complete.

NAME n.cards model pic
Analog synthesizer sound by M. Shinoda 1 data VC5501W edit
Brass 1 data + 1 PCM S5504  
Digi synthesizer sound by M.Shinoda 1 data VC5502W edit
Drums 1 1 data + 1 PCM S5502 edit
Modern Artist Soudscape 1 data TG-502 edit
Modern Artist Soundsource 1 data - edit
Modern Rock classic Soundsource 1 data - edit
Rock Pop 1 data + 1 PCM S5551 edit
Sax 1 1 data + 1 PCM S5501 edit
Synth goes live 1 data EMS55-R002 edit
Synwave 1 1 data + 1 PCM S5531 edit



edit FILTER 2 digital resonant filters in cascade - they do both feature a -12dB slope based on custom programmable IC YM7119.
TIP: Cutoff can be controller by LFO or dedicated EG, but not both at the same time.

filter 55 - Filter 1 mode is both lowpass and highpass
- Filter 2 mode can be set only to lowpass demo HEAR

LFO single delayed digital modulator (shapes: saw up, saw down, triangle, sinewave, square, triangle and sample& hold) for each ELEMENT and 3 destinations.
TIP: Frequency is the same for all destinations but depth amount is individual.

filter 55 - AMOD: LFO to amplitude
- PMOD: LFO to pitch
- CUTOFFMOD : LFO to filter cutoff demo HEAR

edit ENVELOPE 3 EGs families per element:
- AEG amplitude : 4 segments + 5 levels and octave scaling setting
- PEG pitch: 4 segments + 5 levels and octave scaling setting
- CEG1 filter: 6 segments + 5 levels and octave scaling with breakpoints
- CEG2 filter: same as the CEG1.
tg55 elemetns


edit PERFORMANCE system manages up to 16 parts each with assigned reserved polyphony, tuning, stereo panning position, volume and effect level. The global pitch amount can be assigned to aftertouch or randomized for each note.

tg55 elemetns


the custom DSP YM 3413 handles 34 fully editable effects including: reverb (x8), delay, stereo panning delay, gate and distortion.

sequencer demo HEAR distortion + reverb

edit MIDI special CONTROLLER section (in utility mode) allows to assign some parameters like filter cutoff, volume, modulations to any control change on the Midi list.
NOTE: Full sysex implementation is supported.

- 64 ROM patches (PRESET LIST)
- 64 RAM patches
- 16 ROM performances
- 16 RAM performances.
RAM is doubled using memory cards model MCD-32 or MCD-64.


- LEFT - Battery replacement: a CR-2032 lithium battery soldered to the main board (pic below) Tg55 motherboard

- click for high res picture -


edit EDIT many external editors gives relief for this purpose:
- Midiquest (PC-MAC $$$) PIC
- MET-55 for (Atari ST) PIC
- Sound diver (out of business)
- TG55 editor (OLD PC win 3.11)
- TG-55 (linux)
- CTRLR controller



edit MODDING: we did circuit bent a poor Sy55 (tg55) for your pleasure.
Some rich digital textures and glitched noises are at fingertips. Check out some DEMO below.

circuit bent




Yamaha Sy55

SY-55 - same synth engine. The SY is a workstation and includes an internal sequencer but it lacks extra AUX outputs from tg55

yamaha tg33 TG-33 (1990) a mix of FM and PCM samples with vector mix. The keyboard version is Sy-22 then upgraded to SY-35.
yamaha tg77 TG-77 (1990) based on RCM synthesis.
The keyboard version is Sy77 then upgraded to SY-99
yamaha tg500 TG-500 (1992) plain PCM rompler with sample import option. Keyboard version is SY-85
yamaha tg100 Tg-100 GS budget module
yamaha tg300 Tg-300 another GS XG rompler


effet VST PLUGIN / SAMPLED VERSION there are some free and commercial samples set but no official VST plugin: :

  name price
FREE freewavesamples some free basic samples




demo factory song 1
demo factory song 2
demo factory song 3
demo sy55+WX controller *
demo piano: l'après MIDI
demo piano: TINES DX
demo organ: B3
demo organ: pipe + string layer + vcf
demo brass: 90
demo bass: analog
demo bass: wet
demo Synth: vectorial wavestation
demo Synth: delay melody
demo Synth: square from 1972
demo Synth: sample and hold
demo Synth: square from 1982
demo Synth: distortion
demo Synth: saw reverb
demo Pad: oldschool chill out
demo Pad: chorused
demo Pad: filter AWM
demo Pad: speaking cymbal
demo Pad: modulated
demo Pad: mellow cherry
demo Pad: detuned saw
demo Pad: galway like saw
demo Choir 1 short stack
demo Choir 2 slow heaven
demo Choir 3 EG VCF
demo Choir 4 harmonic
demo Ambient: space hulk
demo Ambient: insane
demo Ambient: lunatic
demo Ambient: reverse bubble
demo Ambient: rumble resonance
demo Ambient: sparkling
demo Ambient: put lotion in the basket
demo FX: driller

*thanks to A. Migs*


tg55 + qx3 sequencer Yamaha SY55 original song Yamaha SY55 Sound Demo
+ qx3 sequencer original song SY55 Sound Demo




Company: Yamaha
Model: TG-55
Class: Synth Module
Rack: 1 unit
Dates: 1990
Display: 16 X 2 lines
Synthesis: PCM rompler
Resolution: 16 bits
S. Frequency: 32 - 48 kHz
N. Samples: 74 PCM
Polyphony: 16 voices
Multitimbral: 8 parts
Oscillator: 4 PCM
Filter: Digital Low pass
LFO: 1 modulator
Envelope: 3 EGs
Effect: 34 models
DAC: AD1856N
CPU: H8/523
Demo: 42



DOWNLOAD 400 free SY55 patches !

free korg m3r patches


factory reset procedure
To reset to FACTORY SETTINGS, press the [EXIT] switch, which will execute test 31 – Factory Settings. Test mode will then exit

2.While pressing the [SELECT] switch, press and hold [EXIT] switch, then [Utility] .

- More DEMOS
- Free sample set



brochure sy55
wavetable original advert

brochure sy55
wavetable original brochure

brochure sy55
wavetable original brochure

brochure tg55
wavetable original brochure

brochure sy55
wavetable original brochure

brochure sy55
wavetable original brochure

brochure sy55
wavetable original brochure


yamaha sy55 motherboard

Yamaha TG-55 FOR SALE

Yamaha TG-55 FOR SALE




cpu ROm motherboard
pad machine



REVIEW "double resonant filters are very cool for digital cutting sweeping pads with complex EGs! of course no use for modern acoustic instruments. Very very cheap now, give it a try.""

manual manual
-filters -polyphony
-sweep pads
-few interesting waves

"Your TG-55 Tone Generator represents the state-of-the-art in digital tone generation technology. In addition to superior sound, the TG55 revives the fine arts of musical control and creativity with a voice architecture that allows extensive sample layering and programmable
dynamic timbre variation"
- Yamaha Manual


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