FEATURES
    ¤ Complies with IEEE 269 and CCITT Rec. P.51
    ¤ Response can be compressed or equalized to obtain a flat acoustic output
    ¤ Accuration simulation of human voice field
USES
    ¤ An acoustic soure for near-flied measurements of microphones
    ¤ Quality control testing of frequency response and distortion of telephone transmitters and
        closetalking microphones
Speciations
PERFORMANCE SPECIFICATIONS
    Normal Sound Pressure Level: 94 dB         Frequency Range: 100 Hz~10000Hz
    Frequency Response: ±1.0 dB Loudspeaker Impedance: 6 Ω
    Max. Output Sound Pressure Level: 114 dB (at 25 mm from lip ring)
    Distortion(THD): < 10 % (at 114dB) Max. Input Electric Power: 15 W
ENVIRONMENTAL
    Operating Temperature: -10°C ~ +50°C Humidity: 25% ~ 90%(RH)
    Atmospheric Pressure: 65 kPa ~ 108 kPa
PHYSICAL
    Dimensions(mm): Φ98 × 95         Weight: appro. 1 kg
ACCESSORIES:
    Included: Instruction Manual
    Available: Mounte stand