I built an analog synth from 1979!

David Hilowitz Music2 minutes read

The text discusses the assembly process of a rare synthesizer kit from 1979, highlighting challenges in assembling the main circuit board without instructions or labeled wires. By experimenting with wire combinations, specific functions such as keyboard, volume control, and vibrato are identified, with the synthesizer eventually producing unique sounds with features like a volume slider acting as a filter.

Insights

  • The 1979 synthesizer kit, despite its rarity, presents a challenge due to missing parts and lack of instructions, requiring trial and error in wiring connections on the circuit board for sound production.
  • The synthesizer's unique construction involves a keyboard made of fixed resistors for pitch variation, with tuning to a 440 Hertz key, and innovative features like using a volume slider as a filter, enhancing the dry sounds produced by the device.

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Recent questions

  • How do you assemble a synthesizer kit?

    The synthesizer kit from 1979 is rare and lacks instructions, missing parts like ICs and transistors. The main circuit board is assembled by inserting components like capacitors and resistors following a repetitive process. The challenge arises in connecting wires to the circuit board without labels, requiring trial and error.

  • What components are needed for a synthesizer?

    The synthesizer kit requires components like capacitors, resistors, ICs, and transistors. These parts are essential for assembling the main circuit board and connecting wires to achieve sound output.

  • How is sound achieved in a synthesizer?

    By experimenting with wire combinations, sound is achieved in the synthesizer. Specific wires are identified for keyboard, volume control, power switch, and vibrato. The keyboard is constructed using fixed resistors for different pitches, with tuning done to match a 440 Hertz key.

  • What are the unique features of the synthesizer?

    The synthesizer showcases unique features like a volume slider acting as a filter. After adding front panel controls and adjusting volume, the synthesizer produces dry sounds improved with reverb, highlighting its distinct capabilities.

  • How do you tune a synthesizer?

    Tuning a synthesizer involves adjusting the fixed resistors on the keyboard to match a 440 Hertz key. This process ensures that the pitches produced by the synthesizer are in harmony with standard musical frequencies.

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Summary

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1979 synthesizer kit: rare, challenging, unique sounds

  • The synthesizer kit from 1979 is rare and lacks instructions, missing parts like ICs and transistors.
  • The main circuit board is assembled by inserting components like capacitors and resistors following a repetitive process.
  • The challenge arises in connecting wires to the circuit board without labels, requiring trial and error.
  • By experimenting with wire combinations, sound is achieved, with specific wires identified for keyboard, volume control, power switch, and vibrato.
  • The keyboard is constructed using fixed resistors for different pitches, with tuning done to match a 440 Hertz key.
  • After adding front panel controls and adjusting volume, the synthesizer produces dry sounds improved with reverb, showcasing unique features like volume slider acting as a filter.
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