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Acoustic systems "150AC-007" were produced from I-q 1991 by Lviv PO named after Lenin (Amfiton) and Leningrad plant "Ferropribor" (Lort) Both speakers are designed for high-quality playback of music and speech programs in stationary living conditions. Both speakers are exactly the same. 3-way speaker with phase inverter. The range of frequencies: 25 ... 31500 Hz. Recommended power UZCH - 10 ... 50 watts. Irregularity of the frequency response in the range of 100 ... 8000 Hz ± 4 dB. Sensitivity 86 dB. Rated electrical resistance of 4 ohms. Limit (passport) power 50 watts. Speakers: LF: 50GDN-3. LF: 20GDS-3. HF: 25GDV-1. Filter section frequency: LF / MF: 500 Hz. MF / HF: 3000 Hz. Speaker size - 600x320x270 mm. Weight 25 kg.