Yamaha DX9

{{Short description|Synthesizer}}

{{Infobox synthesizer

| synth_name = Yamaha DX9

| synth_manufacturer = Yamaha

| image =

| image_caption =

| dates = 1983{{Cite web|url=https://www.sequencer.de/syns/yamaha/DX9.html|title=Yamaha DX9 Digital Synthesizer|last=Moogulator|first=Mic Irmer|website=www.sequencer.de|access-date=2018-08-10}}

| price = £899{{Cite web|url=http://www.muzines.co.uk/articles/roland-106-vs-yamaha-dx9/3313|title=Roland 106 vs Yamaha DX9 (ES May 84)|website=www.muzines.co.uk|access-date=2018-08-10}} GBP
$1395{{Cite web|url=http://retrosynthads.blogspot.com/2012/06/yamaha-dx9-performance-is-about-to.html|title=Retro Synth Ads: Yamaha DX9 "The performance is about to begin" introductory ad, Keyboard 1983|last=Retrosynthads|date=2012-06-11|website=Retro Synth Ads|access-date=2018-08-10}} US

| measurements = 40" x 4" x 13" in / 101.8 x 10.2 x 32.9 cm

| polyphony = 16 notes

| timbrality = monotimbral

| oscillator = 4{{Cite web|url=https://encyclotronic.com/synthesizers/yamaha/dx9-r21/|title=Yamaha DX9 Digital Programmable Algorithm Synthesizer|website=Encyclotronic|language=en-US|access-date=2018-08-10}} (Sine), 8 algorithms

| lfo = 1 Saw Up, Saw Down, Sine, Square, Triangle, Delay, Key Sync Sample & Hold

| synthesis_type = Digital FM

| filter = None

| attenuator =

| aftertouch =

| velocity =

| memory = 20-Voice internal memory

| fx =

| synth_hardware =

| keyboard = 61 non-weighted keys

| left_control = Modulation wheel, pitch wheel

| ext_control = Breath controller, MIDI in, out, thru,{{Cite web|url=http://www.synthark.org/Yamaha/DX9.html|title=DX9|last=SynthArk|first=Designed by www.1234.info / Modified|website=www.synthark.org|language=en|access-date=2018-08-10}} Footswitch (portamento and sustain), Foot controller (volume)

}}

The Yamaha DX9 is a spin off synthesizer of the family of the DX7 built by Yamaha. It uses FM synthesis{{Cite web|url=https://www.sequencer.de/syns/yamaha/DX9.html|title=Yamaha DX9 Digital Synthesizer|last=Moogulator|first=Mic Irmer|website=www.sequencer.de|access-date=2018-08-10}} and has 16 note polyphony; however, it only has four FM operators for sound generation compared with six on the DX7 (without alternative firmware ROM).{{Citation |last=Anthony |title=ajxs/yamaha_dx97 |date=2024-09-24 |url=https://github.com/ajxs/yamaha_dx97 |access-date=2024-09-24}} It is the least complex of the DX range of synthesizers and has only 20 on board memory locations.{{Cite web|url=https://soundprogramming.net/synthesizers/yamaha/yamaha-dx9/|title=Yamaha DX9 {{!}} Sound Programming|website=soundprogramming.net|language=en|access-date=2018-08-10}}