Test – Leader LFM 39 A Wow and Flutter meter

The Leader LFM-39A Wow and Flutter Meter is a valuable instrument designed for measuring the Wow, Flutter, and Drift characteristics of various audio playback and recording equipment. Let’s explore its features and usage:

1. Purpose and Functionality:

   • The LFM-39A provides direct reading measurements for Wow, Flutter, and Drift.
   • It quantifies the amount of “frequency wobble” caused by speed fluctuations in analog recording and reproduction devices.
   • The instrument ensures accurate assessment of audio playback quality.

2. Key Features:

   • Oscillator with Excellent Frequency Accuracy:
     • The LFM-39A contains an oscillator with precise frequency accuracy.
     • This oscillator is used for calibrating the drift meter and supplying a recording signal.
   • TO SCOPE Terminal:
     • The instrument features a TO SCOPE terminal for analyzing Wow and Flutter components.
   • RECORDER Terminal:
     • The RECORDER terminal allows Wow and Flutter recording.

3. Calibration:

   • To maintain accuracy, a Calibration CD with special tracks according to the calibration instructions is required.
   • You can download these calibration tracks in WAV audio format here.

4. Applications:

   • The LFM-39A is used for assessing the performance of tape recorders, record players, and other playback/recording equipment.
   • It provides effective values, peak-to-peak values, and center frequency (typically 3 kHz or 3.15 kHz) of Wow and Flutter.

Remember that the Leader LFM-39A Wow and Flutter Meter plays a crucial role in maintaining audio quality and ensuring accurate playback and recording. 🎧🌟

For more detailed information, you can refer to the Leader LFM-39 Wow and Flutter Meter Manual or the official instruction manual.¹²³