Specifications:
a) Helmholtz resonator on stand
Speaker and microphone
arrangement directed into container
Frequency response: 20 Hz to 16 KHz
Volume: 250 ml
b) Digital tuning fork
Alternate to manual tunning fork,
Frequency: Variable
Amplitude: Fixed
Output: fed to speaker, up to 85 dB
Rated Input: 220 V/50 Hz
or 110 V/60 Hz
Power consumption: <30 W
c) Relative sound intensity meter
Input: From the microphone
Built-in amplifier for
conditioning microphone current
Output: Display of relative
sound intensity
