Yamaha TX81Z


Yet another FM synthesizer from Yamaha, this one comes in a compact, multitimbral, 1-unit rackmount module and is basically a key-less version of the DX-11. It has far more professional features than its relative, the FB-01. The TX81Z features great FM type synth sounds similar also to the DX-21 and DX-27. It's still not as good as the classic DX-7, but it's an inexpensive source of those sounds with lots of programmability. Eight voice polyphony, 128 preset sounds, 32 user and lots of functions hidden behind 11 push buttons.
The TX81Z features a new ability to use waveforms other than just a sine wave. There are eight voices that can be split, layered and detuned. Also onboard are pseudo-effects including delay and reverb. These features can be stored as performance setups. The effects are simply envelope and re-triggering effects. The TX81Z works great as a sound-module for any live or studio production. It's got a wider range of sounds than the DX-7, may not be quite as warm or 'classic' sounding, but at its low price and with the excellent MIDI implementation it makes a great alternative or backup synth for percussive, punchy FM synth sounds. It's used by Fluke, Roni Size, Astral Projection, Squarepusher, Jimmy Edgar, Future Sound of London, and Josh Wink.
- Specifications
- Polyphony - 8 notes
- Oscillators - 4-Operator Digital FM synthesizer
- #Instruments - 8 parts
- Filter - None
- Effects - Built-In Pseudo-Effects: Reverb by envelope modulation, Delay by re-triggering on free voices
- Keyboard - None
- Memory - 128 patches, 32 user, 24 performance setups
- Control - MIDI (w/ Velocity and Aftertouch)
- Date Produced - 1987
- Websites of Interest
Yamaha Synthesisers Lots of history, info and links.
- Resources & Credits
Images from Perfect Circuit Audio.
Errors or Corrections? Send them here.

A couple tricks:
-CC#2 (breath control) can be set to modify the amplitude of a set of operators. Handy for instant LPF-cutoff-like control over spectral content.
-Fixed mode operator frequencies go as low as 8hz. Depending on the algorithm, such an operator can serve as an LFO. Handy, since there's 1 LFO per patch maximum and 3 total in performance mode.
-Depending on waveform, slight frequency (and thus phase) differences between 2 operators can create a beat which can also serve as an LFO.
I would like a DX21
Whith ATARI 520 or 1024 + Prg TX81Z you can build sound design but like DX7 it's very hard...
I use TX81Z like bass sequences and metal drums maybe FX & strings brass...
It's like ADSR but complcated = ADSR1 & 2 &3 &4 & mixer=new sound...
Ok good job ...Try it ! Very funy !
TX81Z very standart DX sounds...
Sorry for my bad english! Bye!