The frequency range of XCA919 covers from 2 kHz to 40 kHz. Within this range, it has excellent signal-to-noise ratio, which can meet the free-field testing requirements of microphones in the ultrasonic frequency band.

XCA919 is equipped with a 1-inch high-sensitivity speaker driver, featuring a mechanical Q factor (Qms) as low as 2.3, and a total Q factor (Qts) as low as 0.4. Such low Q values enable the speaker to deliver a wider frequency response range. It can achieve a relatively flat response curve over the range of 2 kHz to 40 kHz. With a nominal impedance of 4 Ω, it can deliver a maximum output power of 130 W while reducing the output voltage requirement of the power amplifier.

Moreover, since the sound signals in the high-frequency band are more susceptible to the acoustic reflection effect compared to the mid and low-frequency bands, the housing design of the XCA919 speaker source is spherical, and the edges of the speaker are tangent to the sphere, reducing the secondary radiation effect caused by the enclosure.

Features:

      ●  1-inch high-sensitivity loudspeaker

      ●  Frequency response 2 kHz ~ 40 kHz (±4 dB)

      ●  Spherical enclosure design with low secondary radiation effects

Applications:

      ●  The free-field sensitivity and frequency response measurement of microphone or sound level meter at high frequency