Bus loudspeaker device of the "AGU-10-4" type.

Car radio and electrical equipment.Car radio and electrical equipmentBus loud-speaking device "AGU-10-4" presumably since 1975 produced the Ryazan radio plant. ASU practically repeats `` AGU-10-3 '', being a bass and speaker amplifier for notifying bus passengers from a microphone and broadcasting radio broadcasts. The rated output power of the device is 6 W, the maximum is 10 W. The range of reproducible frequencies is 150 ... 7000 Hz. The set includes an MF-7B microphone and four 3GDSH-2-4 loudspeakers on reflective boards. Presumably since 1982, the device has been switched to silicon transistors.