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The subscriber loudspeaker "Cheremshina" since 1972 produced the Lviv Telegraph Equipment Plant. The subscriber loudspeaker of class 3 `` Cheremshina '' is designed to play broadcast programs transmitted on broadcast lines with a voltage of 15 or 30 volts. The plant produced option "A" for the 15 V line and option "B" for 30 V. The rated power consumption is 0.15 W. The range of sound frequencies is 160 ... 5000 Hz. Frequency response unevenness 15 dB. Input impedance from the 3.6 kΩ line. The average sound pressure is 0.25 Pa. The coefficient of nonlinear distortion at a frequency of 400 Hz is 8%. Dimensions AH 250x166x78 mm. Weight is not more than 1.5 kg.