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

Leave a Reply




  • THE CAVE : Playlist

  • INSTAGRAM – ANALOG INDUSTRIAL ARTS

    • DUBROVNIK CROATIA OCEAN NAUTICAL SUNSET
    • OCEAN BEACH SURFACE CRYSTAL ART
    • FIRE COTTAGE FIREPLACE BLACK HEAT ART
    • AUTOBAHN HIGHWAY TRAVEL CARS LANDSCAPES DRIVING
    • YELLOW MAGIC ORCHESTRA SHINAGAWA TOKYO TRAIN STATION YMO
    • FORREST WOOD SCULPTURE CONTRAST
    • GLASS ARCHITECTURE CLOUD SKYLINE
    • SHAPES CEILING SELFIE ART DISTORTED
    • DUBROVNIK OLD TOWN
    • ROSTOCK SCANDLINES FERRY TRAVEL SUNRISE
    • ROCKS PEBBLES LAKE GOLD COLORS
    • RADAR DUBROVNIK CROATIA ANTENNA INDUSTRIAL COMMUNICATION
    • LIGHT ART MALM LIVE INDUSTRIAL AMBIENT
    • alexanderplatz berlin fehrnsehturm
    • ANIMALS FARMING COW LIVESTOCK FORREST BLACK AND WHITE
    • SNOWSTORM WINTER UFO PATTERN
    • LAKE WINTER FORREST
    • WALL ARCHITECTURE ART ABSTRACT INDUSTRIAL
Get Adobe Flash player