30-Band Portable Audio Analyzer (with MK8A Microphone)


Goldline's DSP30 is a portable 30-channel digital 1/3 octave analyzer which uses ANSI class-0 and ANSI class 1 triple tuned style. Filters maintain 1/4dB accuracy over an 85dB range. Comes with Windows interface and 60 non-volatile memories. A serial port plus USB adapter is supplied.


  • DSP30 microphone measurement range is 27dB to 125dB.
  • Captures full 85dB window with scales from 1/4dB to 5dB.
  • Filters exceed ANSI specs.
  • Comes with RS232 computer interface
  • Model MK8A - 600 ohm omni-directional electret condenser instrument microphone included
  • An 85dB window not limited by the display.
  • Automatic Sum; Average function to normalize readings and stabilize pink noise.
  • 60 active memories.
  • IEC Flat, A, C or User designated curves.
  • A Sum mode to sum and average response curves.
  • A Subtract mode to subtract one memory from another.
  • Keypad selectable filters: ANSI triple tuned or sharper for notching applications.
  • Scales from 1/4dB to 5dB.
  • Multiple plot function.
  • Export file function.


  • Measurement Range: Microphone input: 27dB to 125dB SPL, Line input: -88dBu to +14dBu (.031mV to 3.88V rms), Measurement window: 85dB
  • Inputs: Microphone: Balanced, XLR 3-pin receptacle, Line: Unbalanced 1/4" phone jack. 15k ohm impedance
  • Outputs: None (standard); Printer port: DB25F (optional), RS232 port: DB25M (optional), Standard on DSP30B/B
  • Center Frequencies: ISO 1/3 octave between 25Hz - 20kHz
  • Center Frequency Accuracy: typically ±1%.
  • Relative Flatness Channel to Channel: 1/4dB
  • Displays: Audio Spectrum, 30 channel, 10 LEDs per channel, all channels scalable in 1/4, 1/2, 1, 2, 3, 4, or 5dB SPL. SPL & Reference readings are 3 digit via 7 segment LED readout
  • Filters: ANSI standard (triple tuned) sharper than standard for notching applications
  • Weighting: IEC A, C, Flat or USER defined
  • Decay Rate: Fast =34.7dB/s, Medium = 8.7dB/s, Slow = 4.3dB/s
  • Function Control: 16-button keypad
  • Power Requirements:
    - Batteries: Eight "AA" alkaline or Ni-Cad
    - External: 12Vdc @ 500mA via 2.1mm jack
  • Case Material: High Impact ABS.
  • Dimensions: 10" W x 10.25" H x 2.5" D
  • Weight: 2 lbs.

WARNING: Cancer and Reproductive Harm -

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