Best Ambient Synth Shootout #99: Böhm Dynamic 4x9 - Song 3

Christian's Sonic Spaces

"This is the third song with the Boehm Dynamic 4x9. It's a German FM-synthesizer from mid-80s that were only available as DIY project. It uses 12(!) Yamaha ICs of the type YM2203, which were commonly used in home computers from NEC as well as in arcade games until the early 90s. Each of the ICs has 3 FM-voices for an overall 36 voices 4-part polyphony.

I used for the recording the following FX for the song:

DigiTech Obscura, Pigtronix Echolution 2 Deluxe, GFI System Specular Reverb 2.

Depending on the recorded track some FX are deactivated.The signal went through a Presonus StudioLive 16.0.2 into the PC for recording. To create the complete song I recorded consecutively several stereo tracks. The final song was then mastered with a bit EQ and compression on some tracks and some limiting on the master track."

Christian's Sonic Spaces Böhm demos

Best Ambient Synth Shootout #81: Böhm Dynamic 4x9 - Song 2

Published on Mar 1, 2020 Christian's Sonic Spaces

"This is the second song with the Boehm Dynamic 4x9. It's a German FM-synthesizer from mid-80s that were only available as DIY project. It uses 12(!) Yamaha ICs of the type YM2203, which were commonly used in home computers from NEC as well as in arcade games until the early 90s. Each of the ICs has 3 FM-voices for an overall 36 voices 4-part polyphony.

I used for the recording the following FX for the song:

T-Rex Twister, DigiTech Obscura, Alesis Ampliton, Pigtronix Echolution 2 Deluxe, GFI System Specular Reverb 2.

Depending on the recorded track some FX are deactivated.The signal went through a Presonus StudioLive 16.0.2 into the PC for recording. To create the complete song I recorded consecutively several stereo tracks. The final song was then mastered with a bit EQ and compression on some tracks and some limiting on the master track."

Additional Böhm Dynamic 4x9 posts

Best Ambient Synth Shootout #73: Boehm Dynamic 4x9 - Song 1

Published on Jul 8, 2019 Christian's Sonic Spaces

"This is the first song with the Boehm Dynamic 4x9. It's a German FM-synthesizer from mid-80s that were only available as DIY project. It uses 12(!) Yamaha ICs of the type YM2203, which were commonly used in home computers from NEC as well as in arcade games until the early 90s. Each of the ICs has 3 FM-voices for an overall 36 voices 4-part polyphony.

I used for the recording the following FX for the song:
Sony DPS-V77 (for chorus only), Pigtronix Echolution 2 Deluxe, GFI System Specular Reverb 2. Depending on the recorded track some FX are deactivated.

The signal went through a Presonus StudioLive 16.0.2 into the PC via USB for recording. To create the complete song I recorded consecutively several stereo tracks. The final song was then mastered with a bit EQ and compression on some tracks and some limiting on the master track."

Boehm Dynamic 4x9 FM-Synthesizer - Two Demosongs & Realtime editing

Published on Feb 13, 2019 Stereoping

Neve seen one of these before.

"The Boehm Dynamic 4x9 is a fully editable 4 OP FM-Synthesizer similar to Yamaha's FB-01. It's got 4 'blocks' each supplying 9 voices from rough Yamaha YM2203 FM-chips.The Boehm is always in Multimode making it easy and funny building layersounds or multitrack arrangements. It also houses 2 different analogue BBD-effects called 'Phasing' and 'Ensemble' bringing some sound-modulation and Solina-feeling to the cold FM-world.

The video contains 2 little arrangements making use of several presets. 1st one is pure Boehm Dynamic 4x9 with a bit of reverb, no other gear used. Some photos show the inside of the unit.

The second song - starting with 'german volksmusik' and ending quite jazzy - uses drums from the Nord Drum 2 and displays the midi activity of the 4 blocks together with the Fruity Loops arrangement.

There is also a followup video showing realtime editing of the unit with a Midi-Controller."

Boehm Dynamic 4x9 - Realtime editing

Published on Feb 13, 2019

"Demo for realtime editing of the Böhm Dynamic 4x9 FM-Synthesizer. Session one scrambles a Strings preset. Second session starts with the sound of an E-Tom. The color of the LED dispays which parameters are currently changed. Switching the BBD-effects around 2:24 & 2:45 (should have made that first on the unchanged string preset, i know).
Caution! The sound is partly distorted and aggressive, you might want to turn the volume down before starting the video."