Acoustic system "Symphony AC-003".
Acoustic systems, passive or active, as well as electro-acoustic units, hearing aids, electric megaphones, intercoms ...Passive speaker systemsThe acoustic system "Symphony AS-003" from the beginning of 1971 was produced by the Riga plant "Radiotekhnika". Specifications: 3-way enclosed speaker. Sound frequency range: 50 ... 15000 Hz. Sensitivity: 92 dB. Frequency response in the range 50 ... 15000 Hz: 15 dB. Sound pressure at a distance of 1 m with a power input of 4 W: 112 dB (0.25 Pa). Speaker impedance: 8 ohms. Loudspeakers used: LF: 5GD-3 (later 6GD-2). MF: 3GD-1. HF: 1GD-3. Speaker dimensions - 790x350x285 mm. Weight 14.5 kg. This speaker was included in the set of top-class stereo radio "Symphony-003".
