Patents Assigned to Sparkomatic Corporation
  • Patent number: 4173941
    Abstract: A response tracer audio equalizer booster amplifier unit having graphic display of frequency response characteristics for variably boosting the power of output signals from an audio frequency signal source to speakers of a stereo sound system or the like, having a cabinet enclosing audio amplifier circuitry for variably boosting the audio signal at plural frequency bands in the audio spectrum, a manually adjustable slide control for each band adjustable along horizontal fore-and-aft paths for varying the signal boosting at the frequency bands, and a graphic display window having markings for the frequency bands and a continuous flexible curve indicator wire variably shaped to simulate a frequency response curve. Motion translating flexible coupling members are moved by the slide to shape the wire to indicate the frequency response curve.
    Type: Grant
    Filed: June 8, 1978
    Date of Patent: November 13, 1979
    Assignee: Sparkomatic Corporation
    Inventor: John F. Castagna