Loudspeaker R 31233
Electronica
- Manufacturer
- Electronica
- Country
- Romania
- Year
- Unknown
- Category
- Components
- Type
- Loudspeakers
- Documentation score
- 1/5
- Last edited
- 03 OCT 2026
Specifications
- Type
- circular, hi-fi (midrange)
- Rated power
- 40 VA
- Impedance
- 4 Ω (type A: 8 Ω)
- Frequency range
- 600–5000 Hz
- Sound pressure
- ≥ 88 dB
- Air-gap induction
- ≥ 10,000 Gs
- Application
- hi-fi speaker enclosures
- Dimensions
- Ø 137 × 102 mm
- Weight
- 0.9 kg (type A: 0.8 kg)
Sources: [1]
Description
The R 31233 is a 40 VA hi-fi loudspeaker for the 600–5000 Hz range, made by Electronica in Bucharest; the R 31233A is the 8 Ω type [1].
Electronica made 14 type variants of power loudspeakers for speaker enclosures, with powers and fixing systems adapted to customers’ needs: R 20472 and R 20472A, R 20166 A and B, R 31233 and R 31233A, R 20505 and R 20505A, R 20450 and R 20450A, R 23052-020 and R 23052-040 [1].
From 1955 the loudspeakers of all Romanian radios and television sets were made in Bucharest, first at Radio Popular and then at Electronica – more than 20 million in all [1]. In 1955 there was a single type, a 130 mm circular loudspeaker of 2.5 VA; by 1989 the range had 18 circular, 11 elliptical and 28 outdoor types [1]. The early Alnico and Ticonal magnets were later replaced by ferrite magnets, made first at Electronica and then at Ferite Urziceni, and membrane technology improved after a Philips licence was bought in 1968 [1].
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