3-inch full range unit from French AUDAX. Since it's a 3-inch unit, I can't expect much in the low frequencies, but I was able to hear sharp, clear sounds in the mid to high frequencies. The exterior is slightly dull. Serial 102426A 102426A (Takahashi Nobuyuki)
Maintenance information: 2022.12.9 operation confirmed (good sweep test)
Accessories: original box
Main specifications: minimum resonance frequency 141 Hz efficiency 82.6 dB diameter 91 mm thickness 56 mm weight 292 g (actual measurement)