AS-1 AudioStrobe Woofer Analyzer Stroboscope 1-665Hz

Quick Overview

The Dayton Audio AS-1 Stroboscope was specifically designed with the loudspeaker enthusiast and professionals in mind. The typical frequency response of a loudspeakers contains peaks, nulls and/or resonances which are undesirable. The causes of such irregularities are difficult to see however by synchronizing the flashes per second at or near the frequency of the inputted sine wave to the loudspeaker, the loudspeaker seems motionless or in slow motion. This allows the loudspeaker behavior to be observed even in well-lit rooms thanks to 36 super bright LEDs with total output of 1000 lumens.

Product Highlights

  • A " Must Have" tool for the speaker enthusiast or professional
  • Glow-in-the-Dark Buttons for use in dark environments
  • Large LCD with backlight for easy viewing
  • Super bright LED strobe (1000 lumens) is visible even in well-lit rooms
  • Single-step or continuous frequency tuning adjustment
  • Ergonomic ABS Plastic shell is solid and comfortable to operate
  • Memory storage for up to 10 sets of flash frequencies

Product Manuals / Spec Sheets / Downloads

AS-1 Instruction Manual

Buying Options

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Dayton Audio AS-1 Stroboscope Woofer Analyzer

See what you've been hearing!

By utilizing the phenomenon of persistence of vision, the Dayton Audio AS-1 can often help identify the cause of response defects and other useful information about individual drivers as well as complete loudspeaker systems by slowing down a driver's movement to see its performance in motion.

Hand-Held Diagnosis


The Dayton Audio AS-1 can help identify the cause of response defects and other useful information of individual drivers. These include, but are not limited to:

  • Non-linearity e.g, rocking motions of the cone
  • Cone, Surround and dust cap deformations
  • Resonance modes in spider and tinsel leads
  • Lead deformation
  • Spider deformation
  • Phase relationships in multi-speaker systems
  • Tuning frequency and behavior of passive radiators
  • Excursion limits of active and passive drivers



Large Readout

The illuminated screen lets you see important information while using the AS-1 in the dark.

Glow-in-the-dark Buttons

Glowing buttons allow you to make changes to the output while using the AS-1 in the dark.

Ultra-Bright LEDs

Ultra-Bright LEDs illuminate the object in motion so the visual effect of the AS-1 is reliable


Slow Motion


Dayton Audio’s AS-1 provides intermittent illumination of an object for visual analysis. By adjusting the frequency of illumination, objects in vibrational or rotational movement can appear stationary or in slow motion. This optical illusion called visual persistence allows for a non-contact inspection and status of moving object surfaces well beyond the ability of the naked eye.


Model Number AS-1
Unit of Measure Each
UPC 848791008139
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Product Shipping Weight (lbs.) 1.3
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