DMS4008-10

RYD DMS4008-10 Low-Frequency Calibration Audio Unit for Medical Audiometry and Test Equipment. This specialized 8±15%Ω receiver delivers 98±3dB SPL (0.1W, 0.1m, averaged at 0.8/1.0/1.2/1.5kHz) with resonance frequency 200±20%Hz. Frequency range F0–3kHz with PET cone and ABS housing. Rated power 0.1W (max 0.2W), weight 9±5%g. Operating temperature -20℃ to +50℃, storage -25℃ to +60℃. Tested under simulated ear conditions for metrological consistency. The linear low-frequency output and controlled resonance characteristics suit audiometer calibration, hearing threshold testing, acoustic reference measurements, and laboratory test fixtures requiring repeatable low-frequency sound generation.