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Ultra-low distortion, New generation

AM 581 Mouth Simulator

  • Ultra-low distortion, New generation

  • The AM 581 mouth simulator is used to accurately simulate the sound source near the human mouth, and is suitable for testing acoustic parameters such as frequency response and distortion of telephone transmitters and microphones.


    The AM 581 has extremely high sensitivity and wideband transduction efficiency, ensuring extremely low distortion even at a working distance of 10cm at a sound pressure level of 94dB; Under typical 8cm MRP distance and 94dB sound pressure level working conditions, the distortion energy between 200Hz and 10kHz is less than 1%.


    Cooperating with Megvii PM 0083 preamplifier amplifier, with excellent specifications, suitable for research and development testing or production testing of high-end audio products.

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  • Description
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Description

Specifications

ParameterValue
THD200Hz – 10kHz：test standard is less than 1% （94dB SPL@80mm reference point）
Frequency ResponseAfter compensation, output sound pressure is 94dB ± 0.1dB （100Hz - 10kHz） at 80 mm reference point distance
Weight1276g
Impedance4ohm
Mouth RingOuter diameter: Φ48mm, Height: 11mm
Continuous Maximum Power10W (@ 1kHz, 8V output)
Sound Outlet DiameterΦ20mm
DiameterΦ104mm
Height100mm
ConnectorBNC

Frequency response

Typical sound pressure curve before compensation

补偿前.png

Compensated 94 dB Sound Pressure Frequency Response Curve (80 mm MRP) 

补偿后.png

Compensated 94 dB Typical Distortion Curve (80 mm MRP) 

补偿后的THD.png

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