The Dayton Audio AS-1 AudioStrobe Woofer Analyzer 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.