The Oberheim OB-Xa, launched in 1980, is one of the most iconic analog synthesizers of the decade. Known for its rich, powerful sounds, the OB-Xa marked the history of electronic music with its unique characteristics and influence on the musical genres of the 1980s.
Virtual OBERHEIM OB-Xa
Oberheim OB-Xa: The Iconic Polyphonic Analog Synthesizer
Overview of the Oberheim OB-Xa
The Oberheim OB-Xa, introduced in 1980, is a legendary polyphonic analog synthesizer that built upon the success of the OB-X. Known for its rich, warm tones and powerful modulation capabilities, the OB-Xa became a cornerstone in the world of analog synthesis and a favorite among musicians and producers.
Key Features of the Oberheim OB-Xa
- Synthesis: Analog subtractive synthesis
- Polyphony: 4, 6, or 8 voices (depending on the model)
- Oscillators: 2 voltage-controlled oscillators (VCOs) per voice
- Filter: 12dB/octave and 24dB/octave low-pass filter
- Envelope Generators: 2 ADSR envelope generators per voice
- LFO: 1 LFO with multiple waveforms
- Keyboard: 61-note keyboard
- Memory: 120 patch storage locations
- Modulation: Extensive modulation options including oscillator sync and cross-modulation
- Connectivity: CV/Gate inputs and outputs
Development and Innovation
The OB-Xa was developed by Tom Oberheim and his team to improve upon the OB-X by adding more voices and enhancing its sound-shaping capabilities. It was designed to compete with other polyphonic synthesizers of the time, such as the Sequential Circuits Prophet-5, and offered a more versatile and powerful sound engine.
Unique Aspects
- Enhanced Polyphony: Offered up to 8 voices of polyphony for richer, more complex sounds
- Dual Filter Modes: Included both 12dB/octave and 24dB/octave low-pass filters for greater tonal flexibility
- Programmable Presets: Allowed musicians to store and recall patches easily
Impact on Music Production
Applications in Music
- Electronic Music: Used for creating lush pads, powerful bass lines, and intricate leads
- Pop and Rock: Favored by many artists for its distinctive sound
- Film Scoring: Valued for its ability to create rich, atmospheric sounds
- Progressive Rock: Ideal for complex, evolving soundscapes
Legacy and Historical Significance
- Set a new standard for polyphonic synthesizers in the early 1980s
- Influenced the design of subsequent Oberheim synthesizers and other brands
- Continues to be sought after by vintage synth enthusiasts for its unique sound
Conclusion: The OB-Xa’s Place in Synthesizer History
The Oberheim OB-Xa stands as a significant instrument in the history of analog synthesizers. Its introduction of enhanced polyphony and dual filter modes was a groundbreaking innovation that influenced the design of future synthesizers. Known for its rich, warm sound and extensive modulation capabilities, the OB-Xa remains a beloved classic among musicians and producers. Its legacy continues to inspire new generations of synthesizer enthusiasts, ensuring its place in the pantheon of great synthesizers.