Acoustic emitter (passive acoustic speaker) SEL SP-157AS is used in line with system of acoustic and vibroacoustic speech information protection for creation of acoustic noise signals.
Has a level regulator of emitted signal (screwdriver socket), situated on the backpanel.
|The frequency range of reproducible noise signal||90 Hz...11,2 kHz|
|Nominal resistance||12,5 Ohm|
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