Acoustic system '' 75 ASP-101 ''.
Acoustic systems, passive or active, as well as electro-acoustic units, hearing aids, electric megaphones, intercoms ...Passive speaker systemsAcoustic system "75ASP-101" was developed in 1991 by VNIIRPA them. A.S. Popov. Unfortunately, there are no photos. The speaker is designed for high-quality reproduction of music and speech programs in stationary household conditions. A distinctive feature of the acoustic system is the use of specially film synthetic material based on polyolefins in the woofer, midrange and treble loudspeakers for diffusers. Specifications: 3-way floor-standing speaker Range of reproducible frequencies: 40 ... 25000 Hz. Sensitivity: 89 dB. Uneven frequency response in the frequency range 100 ... 8000 Hz: ± 4 dB. Recommended amplifier power: 50 ... 75 W. Harmonic distortion at a sound pressure level of 90 dB in the frequency range: 250 - 1000 Hz: 2%. 1000 - 2000 Hz: 1.5%. 2000 - 8000 Hz: 1%. Resistance: 8 ohms. Long-term power: 75 watts. Dimensions of the speaker 670x340x330 mm. Weight 25 kg. Design features: The body is made in the form of a non-separable rectangular box made of chipboard or multilayer plywood 20 mm thick, veneered with fine wood veneer. On the front panel, LF, MF and HF loudspeakers are located symmetrically about the vertical axis, covered with decorative overlays. The internal volume of the case is 60 liters. The woofer with a diameter of 250 mm has a conical cone made of a special polyolefin-based synthetic film. The mid-range loudspeaker is 125 mm in diameter and has a conical cone made of the same material. The composition of this material allows for low nonlinear harmonic distortion by suppressing the amplitudes of the resonances of the diffusers, purity and reliability of sound at high input signal levels. The tweeter has a 25 mm diaphragm made of polyamide-based synthetic paper. The use of this material ensures high temperature stability of this loudspeaker, as well as purity and natural reproduction of the high-frequency part of the audio signal spectrum. Inside the case are installed passive electric filters-correctors, optimized on a computer and providing a low unevenness of the frequency response of the sound pressure. Crossover frequencies: between LF and MF heads 600 Hz, between MF and HF 4000 Hz.