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Sound calibration
SC-2600/SC-2500A/SC-2120A

SC-2600
SC-2600
SC-2600
SC-2600
SC-2500A
SC-2500A
SC-2500A
SC-2500A
SC-2120A
SC-2120A

An acoustic calibrator is used for the unit calibration of measurement microphones and for verifying the readings of sound level meters.
Since sound pressure is affected by temperature and atmospheric pressure, it is important to use the acoustic calibrator before and after measurements to ensure accurate readings.
According to standards related to measurement methods, such as for measuring acoustic power levels, it is stipulated that microphones must be calibrated using an acoustic calibrator.
Additionally, JIS C 1509-1 and IEC 61672-1 specify that when using a class 1 sound level meter, a class 1 acoustic calibrator must be used.

Regarding the use of the acoustic calibration device.

  • Even with the same acoustic calibration device, the "calibration sound pressure level" may differ depending on the type of microphone.
    When calibrating, it is essential to check the "calibration sound pressure level" in the instruction manual.

  • When using a 'Class 1' sound level meter or microphone, it is recommended to use a 'Class 1' acoustic calibration device.

  • To ensure the performance of the acoustic calibration device, regular calibration is required.
    Our company offers three calibration services: "ASNITE calibration", "JCSS calibration", and "general calibration".
    See more→

Features

SC-2600

  • This is an acoustic calibration device that conforms to JIS C 1515:2020 Class 1, with a nominal sound pressure level of 94 dB. It generates stable sound by incorporating feedback control and built-in correction functions for static pressure and temperature.

  • To perform high-precision measurements using the Low Noise Microphone MI-1282M10＊, we recommend using this product.
    ＊Acoustic calibration of the low noise microphone requires an acoustic calibrator with a nominal sound pressure level of 94 dB.

SC-2500A

  • This is an acoustic calibration device that conforms to JIS C 1515:2020 Class 1, with a nominal sound pressure level of 114 dB. It generates stable sound by performing feedback control internally.

  • Due to the generation of a large sound pressure level of 114 dB, it is less likely to be affected by loud surrounding noises in environments such as factories or outdoors, allowing for calibration in the actual measurement environment.

SC-2120A

  • This is an acoustic calibration device that conforms to JIS C 1515:2004 Class 2, with a nominal sound pressure level of 94 dB. It can also be used for simple operational checks.

  • Adopting a dynamic speaker type, we have achieved a low price.

Specification

type SC-2600 SC-2500A SC-2120A
Applicable Standards JIS C 1515:2020 Class 1
IEC 60942:2017 Class 1
ANSI S1.40-2006 (R2011) Class 1		 JIS C 1515:2004 Class 2
IEC 60942:2003 Class 2
method speaker system
suitable product 1/2 inch microphone: MI-1235/MI-1271/MI-1433/MI-1271M12/MI-1282M10
1/4 inch microphone: MI-1531 *2
High-performance sound level meter: LA-7200/LA-7500/LA-7700
Integrating average sound level meter: LA-1411/LA-1441A/LA-4441A
Ultraminiature Microphone: MB-2200M10 *3		 1/2 inch microphone: MI-1235/MI-1271/MI-1281*1/MI-1433/MI-1271M12
1/4 inch microphone: MI-1531 *2
High-performance sound level meter: LA-7200/LA-7500/LA-7700
Integrating average sound level meter: LA-1411/LA-1441A/LA-4441A		 1/2 inch microphone: MI-1235/MI-1271/MI-1433/MI-1271M12/MI-1282M10
High-performance sound level meter: LA-7200
Integrating average sound level meter: LA-1411/LA-1441A
Ultraminiature Microphone: MB-2200M10 *3
sound pressure level Nominal sound pressure level: 94 dB
Sound pressure level deviation: within ±0.20 dB *4		 Nominal sound pressure level: 114 dB
Sound pressure level deviation: within ±0.20 dB *4		 Nominal sound pressure level: 94 dB
Sound pressure level deviation: within ±0.5 dB *4
total strain below 0.5% *4 below 0.5%
frequency Nominal frequency: 1000 Hz
Frequency deviation: within ±0.1 % *4		 Nominal frequency: 1000 Hz
Frequency deviation: within ±1 % *4
usage environment Ambient temperature: -10 to 50 °C (no condensation)
Static pressure: 65 to 108 kPa
Relative humidity: 25 to 90 % * Excluding ambient temperature and humidity exceeding dew point above 39 °C.
Power Supply 2 x AA batteries (LR6 or HR6) 1 x 9V flat battery (6F22 or 6LR61)
battery lifespan Continuous operation for over 10 hours (when using LR6 in standard conditions) Continuous use for over 20 hours (when using 6F22).
External dimensions (excluding protrusions) 84 (W) × 53 (H) × 76 (D) mm 52 (W) × 45 (H) × 130 (D) mm
Weight Approximately 220 g (including 2 dry batteries) Approximately 300 g (excluding dry batteries)
Accessories Instruction manual (Japanese/English/Chinese) × 1
AA batteries (LR6) × 2
Coupler protection cap × 1		 Instruction manual × 1
9 V rectangular battery (6F22) × 1
Price      

*1: Discontinued product
*2: The SC-0313 adapter with MI-3140 1/4 inch preamplifier is required
*3: The separately sold MB-0210 calibration adapter is required
*4: The marks are based on standard conditions (Standard environmental conditions: Ambient temperature 23 °C, Static pressure 101.325 kPa, Relative humidity 50 %)

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Outline Drawings

最終更新日:2026/1/14