Отзыв о Car Amplifier Ural BV 1.800 от Mateusz Majchrzak ᠌

It would not cost a penny to screw on a penny threshold fan control scheme, and there would be no unnecessary noise. I took myself two pieces in the bridge for a non-standard head for car audio - 18Sound 18LW1400 (8) 8 Ohm. The fans are just making a lot of noise. I turned them off immediately because, taking into account the efficiency and load, the amplifiers do not heat up at all. Can be upgraded - there is a lot of space, the layout is simple. I raised the voltage to ± 85V, replaced the output transistors with more suitable ones (more Uds, less Id, less Qg), added capacitances of 6800uFx100V per shoulder + 20220uFx16V at the input and from two amplification devices it was possible to normally remove one and a half kilowatts per 8 ohms (more than 100V in load). The damping factor (even taking into account the load of 8 ohms) is not very high (did not measure it) . by ear, the QSC RMS3051 professional amplifier plays faster, more collected and louder with an application of 690 watts at 8 ohms, and this is clearly audible. In general, great for your money.