Subscriber loudspeaker "Alt".

Subscriber loudspeakers.DomesticSince 1993, the subscriber loudspeaker "Alt" has been produced by JSC "Radio Equipment Plant" in Yekaterinburg (presumably). Souvenir loudspeaker "Alt" is designed to work in 30-volt radio broadcasting networks. Power input 0.15 W. The range of reproducible frequencies is 250 ... 5000 Hz.