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A standard Sound source that Generates a constant sound pressure of 114 dB at 250Hz
Pistonphone
Model:
NC-72B
Maker:
RION CO.,LTD.
Carefully insert a microphone all the way into the coupler. Then simply turn the power on to apply a constant sound pressure level to the diaphragm of the microphone. To use a 1/2-inch or 1/4-inch microphone, install the supplied adapter into the coupler. Turn the power switch on and ensure that the battery voltage monitor (LED) is lit during use.
Applicable standards | IEC 60942:2017 class LS/M, class 1/M ANSI/ASA S1.40-2006 (R2016) class LS/C, class 1/C JIS C 1515:2020 class LS/M, class 1/M CE marking, WEEE Directive, Chinese RoHS |
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Specified microphones | Microphones made by RION as well as microphones made by other manufacturers that meet the IEC 61094-1, IEC 61094-4 size specifications 1-inch microphones 1/2-inch microphones (supplied adapter used) 1/4-inch microphones (supplied adapter used) |
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Sound pressure level | Nominal sound pressure level | 114 dB |
Specified sound pressure level | 114.0 dB ±0.2 dB(As noted on supplied calibration chart) | |
Specified sound pressure level tolerance | ±0.10 dB (Using specified sound pressure level on supplied calibration chart as reference) | |
Frequency | Nominal frequency | 250 Hz |
Specified frequency | 251.19 Hz ±0.10 Hz(As noted on supplied calibration chart) | |
Specified frequency tolerance | ±0.1 % (Using specified frequency on supplied calibration chart as reference) | |
THD + noise rating of generated sound | 2.0 % max. (22.4 Hz to 22.4 kHz) | |
Ambient conditions for operation | Static pressure | 65 kPa to 108 kPa |
Ambient temperature | −10°C to +55°C | |
Relative humidity | 10 % to 90 % RH (no condensation) | |
Power supply | Six AA batteries Alkaline batteries LR6, Manganese batteries R6P, NiMH rechargeable batteries HR6 (Set the battery switch to the type of battery used) |
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Battery life | 15 hours or more (when in continuous use with six LR6 batteries) 4 hours or more (when in continuous use with six R6P batteries) 13 hours or more (when in continuous use with six HR6 batteries) |
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Dimensions and weight | Approx. 62 mm (H) × 44 mm (W) × 170 mm (D), Approx. 750 g (including batteries) |
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Supplied accessories | Carrying case ×1 1/2-inch adapter ×1 1/4-inch adapter ×1 Barometer ×1 Alkaline batteries (LR6) ×6 Calibration chart ×1 |
*Standard environmental conditions: static pressure of 101.325 kPa, ambient temperature 23°C, relative humidity 50 %