Acoustic and vibroacoustic interference generator SEL SP-157G

The generator of the acoustic and vibroacoustic protection system of speech information is an active means of vibroacoustic protection of type "A" class 1, can be installed in dedicated rooms up to and including category 1.

Two independent channels of acoustic noise, consisting of a mixture of "white noise" and "speech-like" interference, in the frequency band of 90 - 11200 Hz provide a high noise quality factor with a maximum output power of up to 9 W.

A seven-band equalizer for adjusting the frequency response allows you to optimally select the levels and frequency characteristics of the sound interference for the most comfortable state in any protected room.

Electrodynamic and electromagnetic vibration transducers of a unique design are used as terminal protection devices, allowing, with their small weight and dimensions, to obtain the greatest useful return at both high and low frequencies compared to others (for example, piezoceramics).

Specifications:
Number of structurally independent channels / outputs 2 / 4
Output power of each channel:
- nominal 4 W
- maximum up to 9 W
Number of converters connected to each channel from 1 to 32
Total number of emitters connected to the system up to 64
Equivalent load resistance of one channel from 2.7 to 12.5 Ohm
Geometric average frequencies of octave bands 250, 500, 1000, 2000, 4000 and 8000 Hz
LCD screen size 62x18 mm
Overall dimensions of the SEL SP-157G generator 225x150x75 mm
Weight 3 kg