LxT Manual
Technical Specifications
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Model PRMLxT1L
The Larson Davis PRMLxT1L is a prepolarized microphone preamplifier for use with Larson Davis
LxT Sound Level Meters. It requires very little supply current and will drive 200 feet of cable. The
preamplifier operates over wide temperature and humidity ranges. It is for use with 50 mV/Pa
sensitivity microphones up to 118 dBSPL.
Specifications
Unless otherwise stated, all electroacoustic values are at 23 °C, 50% RH, 7.5 Volt supply, 3 m (10')
cable and equivalent microphone of 18pF.
Frequency response
with respect to the response at 1 kHz with 1.1 Volts rms input and 18 pF equivalent microphone.
4 Hz to 10 Hz +0.1, -0.5 dB
10 Hz to 40 kHz +0.1, -0.18 dB
Lower –3 dB limit < 1.5 Hz
Attenuation
1.2 dB (typical)
Input Impedance
10 G Ohm // 3 pF
Output Impedance
50 Ohm
Maximum Output
2.8 Vpp
121 dB peak for microphones with 50 mV/Pa sensitivity
Maximum Output Current
10 mA peak
Distortion
Harmonics <-50 dBc with 0.7 Volt rms output at 1 kHz
Output Slew Rate
2 V/µS (typical)
Содержание SoundExpert LxT
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