Listen to the sounds of Oberheim OB-Xa

November 25, 2013 · Posted in Uncategorized 

All synthesizer sounds: Oberheim OB-Xa Analog Synthesizer (1981)
drums: Roland TR-808
recording: multi-tracking
fx: reverb and delay

The Oberheim OB-Xa was Oberheim’s overhaul of their first compact synthesizer, the OB-X. The OB-Xa was released in December 1980, a year after the OB-X was released. Instead of discrete circuits for oscillators and filters, the OB-Xa (and the Oberheim synths to follow) switched to Curtis integrated circuits. This made the inside of the synth less cluttered, reducing the labor required to replace bad parts, and reducing the cost of manufacture. However, today it’s much easier to fix an OB-X than an OB-Xa, as Curtis parts are getting scarcer, whereas discrete parts used in the OB-X are almost always readily available.

Aside from hardware changes, the OB-Xa had better interface features than the OB-X. These included being able to split the keyboard into two halves with different voices and the ability to layer voices to create thicker sound (essentially making two notes sound for every key pressed). Polyphony stayed the same – again 4,6 and 8-voice models were offered.

One function that did disappear from the OB-X voice architecture was cross modulation, or frequency modulation of the first VCO with the second VCO. When done with analogue circuits, it’s a unique sound made famous by the Sequential Circuits Prophet 5 and its poly-mod section. The lack of this feature somewhat reduced the range of sounds possible on the OB-Xa.

Comments

Comments are closed.

  • THE CAVE : Playlist

  • INSTAGRAM – ANALOG INDUSTRIAL ARTS

    • ARCHITECTURE DOWNTOWN STHLM INDUSTRIAL SHAPES SYMMETRY
    • INSTALLATION ARCHITECTURE FACTORY INDUSTRIAL STEEL
    • ARCHITECTURE OFFICE INDUSTRIAL GEOMETRY CONTRAST
    • ARCHITECTURE ARTY DESIGN INDUSTRY STREETART
    • ABSTRACT INDUSTRIAL ART COMPOSITION AMBIENT ELECTRONIC REDUCTION
    • WINDOWS INDUSTRIAL SQUARES ROUGH SHAPES DESTRUCTIVE
    • ART DESIGN LEONARDODAVINCI CULTURE CONCEPT STOCKHOLM INDUSTRIAL 3D
    • ARCHITECTURE OFFICE DESIGN INDUSTRIAL PATTERN GLASS
    • ATTENTION ELECTRO INDUSTRIAL INSTALLATION EXPERIMENTAL
    • DUVED RE CABIN WINTER SNOW
    • DOTS LIGHTS PATTERN GLOWING ART AMBIENT
    • ILLUMINATION TRIAD ARCHITECTURE DESIGN 1950 LAMPS
Get Adobe Flash player