VOLTAGE CONTROLLED AMPLIFIER / BALANCED MODULATOR
MODULE 9017

VCA FEATURES:

  • LOW NOISE , LOW DISTORTION AND HIGH SLEW RATE
  • LED CONTROL MONITOR ASSISTS IN MIXING CONTROL SIGNALS
  • ATTENUATED INVERTING AND NON INVERTING INPUTS
  • ADDITIONAL 1/4" 2V P-P OUTPUT
  • LINEAR CONTROL INVERTER BUILT IN
  • LOW D.C. OFFSET AND CV FEEDTHROUGH FOR "THUMP FREE" OPERATION
  • SENSITIVE EXPONENTIAL CONTROL PRODUCES PERCUSSIVE EFFECTS
  • ACCURATELY PROCESSES CONTROL VOLTAGES

BALANCED MODULATOR FEATURES:

  • LOW NOISE , LOW DISTORTION AND HIGH SLEW RATE
  • SELECTABLE COUPLING ON EACH INPUT
  • CAN BE USED AS A SECOND VCA

CONSTRUCTION:

  • HIGH QUALITY ELECTRONIC COMPONENTS, HAND ASSEMBLED AND TESTED
  • MILITARY GRADE HARDWARE, POTENTIOMETERS, JACKS, KNOBS
  • HI RESOLUTION, BRUSHED, BLACK ANODIZED FRONT PANEL
  • HAND SELECTED, LOW NOISE. LARGE GEOMETRY TRANSISTORS

C.M.S. MODULE 9017 CONTAINS A PROFESSIONAL VOLTAGE CONTROLLED AMPLIFIER AND A HIGH ACCURACY BALANCED MODULATOR DESIGNED SPECIFICALLY FOR USE IN THE C.M.S. MR-2 MODULAR SYNTHESIZER.

THESE UNITS EXHIBIT LOW DISTORTION AND FULL FREQUENCY RESPONSE FROM DC CONTROL VOLTAGES TO 40KHz.

THE VCA HAS TWO ATTENUATED INPUTS, INVERTING AND NON INVERTING, THAT WILL ACCEPT BOTH AUDIO AND CONTROL VOLTAGES FOR AMPLITUDE PROCESSING. THE VCA ALSO HAS SEPARATE, VARIABLE LINEAR AND EXPONENTIAL CONTROL INPUTS AVAILABLE SIMULTANEOUSLY. A LED CONTROL MONITOR PROVIDES VISUAL FEEDBACK ON EACH CONTROL LEVEL THIS ENABLES THE PRECISE MIXING OF 2 ENVELOPES AND IS ESPECIALLY USEFUL FOR PERCUSSIVE, PUNCHY ENVELOPES. AN "INITIAL GAIN" CONTROL ADJUSTS THE AMPLITUDE DIRECTLY FROM THE FRONT PANEL. THE VCA HAS AN INTEGRATED INVERTER SWITCH THAT INVERTS THE LINEAR CONTROL.

THE BALANCED MODULATOR IS A HIGH ACCURACY, DISCRETE MULTIPLIER EMPLOYING DOUBLE WILSON CURRENT MIRRORS. IT HAS 2 ATTENUATED INPUTS, CARRIER AND MODULATON. EACH INPUT IS PROVIDED WITH SWITCHES PROVIDING AC OR DC COUPLING . THIS PROVIDES MORE OPTIONS ON PROCESSING AUDIO SIGNALS AS WELL AS PROVIDING A STANDARD VCA FUNCTION.

THE BALANCED MODULATOR CAN ALSO BE USED AS A SECOND VCA. AUDIO IS INSERTED IN THE CARRIER INPUT SET TO AC COUPLING. AND THE CONTROLLING VOLTAGE IS INSERTED IN THE MODULATON INPUT SET TO DC COUPLING.

ELECTRICAL SPECIFICATIONS:

OUTPUTS:

  • FREQUENCY RESPONSE: +1Db,D.C. - 40KHZ
  • GAIN: UNITY
  • NOMINAL LEVEL:10V P-P, +/-10V MAXIMUM
  • ALL IMPEDANCES: 1K OHM

INPUTS:

  • AMPLITUDE MODULATION: EXPONENTIAL - 1DB PER VOLT
  • AMPLITUDE MODULATION: LINEAR - eout=einecontrol/10
  • NOMINAL AUDIO INPUT: 10 V P-P, +/-10V MAXIMUM
  • AUDIO INPUT IMPEDANCE: 100K OHM
  • CONTROL INPUT IMPEDANCE: 100K OHM

 

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Phone: 912-727-2195
©2004 Phil Cirocco