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Ultra low noise, typical 9.5dBA

SS 772-11

  • Ultra low noise, typical 9.5dBA
  • The high sensitivity and low noise artificial ear is an ear simulator that simulates the way an earplug catheter is inserted into the ear canal or auricle, and simulates the coupling between the earphone and the human ear to measure the acoustic performance of the earphone. The SS 772-11 is a coupled cavity and preamplifier integrated non-detachable construction, it is a pre-polarized pressure field measurement microphone kit.

    With MegaSig PM 0083 IEPE signal conditioner to achieve the best test results;


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Description

Specifications


ParameterValue
Sound Field TypePressure field
Earphone Type入耳式
Coupler Volume1.26cc
Frequency Response20Hz – 8kHz ± 0.5dB 8kHz – 10kHz ± 1dB 10kHz – 16kHz ± 2dB 16kHz – 20kHz ± 3dB
Dynamic Range10dB(A) - 113dB
Noise Floor10dB(A)
Sensitivity250mV (-12.0dB) ± 2dB re 1V/Pa
Standard/
ConnectorBNC
Operating Temperature-20°C to 60°C
Relative Humidity10- 90% no condensation


Specifications


Types of Acoustic Fields

Pressure Field

Polarization voltages

0V(Prepolarized)

Frequency range

20Hz  -  4kHz ± 0.5dB   4kHz  -  10kHz ± 1dB   10kHz  - 16kHz ± 2dB   16kHz  - 20kHz ± 3dB

Dynamic range

10dB(A)- 113dB

Typical background noise

9.5dB(A) - 10dB(A)

Sensitivity  mV/Pa(dBV/Pa)

250mV (-2.0dB) ± 2dB

Maximum Output Voltage

5.6V

Output Impedance

<50Ω

Power Supply

2mA - 10mA(typical 4mA)

Pressure Equalization Method

Post-equalization

Connection

BNC

Temperature range, operation

-20℃ to 60℃

Temperature range, storage

Temperature:25℃±5℃,Humidity:50%±15%RH(Ensure the long-term stability of the sensor)

Humidity range non condensing20 - 90% without condensation

Humidity coefficient

<0.1dB