General view

AA 12.24

IEI

Year
Unknown
Category
Audio
Type
Amplifiers
Documentation score
1/5
Last edited
03 OCT 2026

Specifications

Output power
12 W
Impedance
3 Ω
Frequency response
150–8,000 Hz
Distortion
max 5%
Signal-to-noise ratio
40 dB
Inputs / sensitivity
microphone 1 mV/10 kΩ; radio 25 mV/100 kΩ; tape recorder 250 mV/100 kΩ
Power supply
24 V DC, 1.5 A
Dimensions
175 × 150 × 55 mm
Weight
1 kg

Sources: [2]

Description

The AA 12.24 is an amplifier for the public-address systems of buses, made by IEI in Bucharest [1]. It mixes the microphone of the driver or guide with radio, TV or tape programmes; its final stage gives up to 12 W and is protected electronically against short circuits [2].

Gallery

No other images available yet.

Schematics

No schematics available yet.

Documents

No documents available yet.

References

  1. [1]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, chapter IV „Uzinele Electronica / Întreprinderea de Electronică Industrială – IEI”, pp. 411–422
  2. [2]N. Millea (coord.) et al. – „Electronica românească. O istorie trăită”, vol. II „Electronica profesională”, AGIR, annex IV.2.1 „IEI – produse de uz civil: aparatură audio”, pp. 690–693