FM ACOUSTICS products maximum trait is "expensive" but expensive some unacceptable. However, since this company to enter the HIFI equipment market over the past 20 years and you've just added, it seems that not all users were of the opinion that it is expensive for no reason. The author introduces the FM115 Mono after the class is $ 800 million yen, amounting to nearly 70 million Yuan, is really terribly expensive. FM115 is the upgrade version, FM771 it basically inherited FM771 design concept, the following is a detailed description on it.
FM ACOUSTICS FM115 Mono after the class
The design is FM115 to exclude signal amplification transfer limits, has time error, the dynamic compression and dynamic deformation was relieved to get excellent pass-through rate. It takes the perfectly balanced design, the three levels of push-pull amplifier, no current feedback. By signal entry to export using purification of all A-grade Zoom line structure and output also adopts a unique enhanced A grade line. And although only a FM115 sound track, but enjoy FM771 power capacity, energy is abundant.
FM ACOUSTICS FM115 mono rear-backplanes
From the above figure is not difficult to see that the left FM115 backplane is referred to as "private" FORCE PLUG200 subsidiary speaker terminals. The right is the balance connection output terminals, equipped with a set of the triangle to the hot end of XLR Terminal. But next to it is used to adjust the input balance knob.
FM ACOUSTICS FM115 Mono after the level of internal structures
FM115 internal parts of the configuration of the logical and simple. Toroidal power transformer is located in front of the computer box, amplifying circuit board in the middle section in the middle of the heatsink on the rear side, parts of the space is very spacious, amplifying circuit adopts all paragraphs a fully balanced discrete structures.
FM ACOUSTICS FM115 Mono after the level of internal structures
Remove the top panel and the Panel, by looking inside of the front. Capacitors, belted fixed, the other parts of the circuit board. Power supply transformer and rear side and no shielding. Circuit board with shockproof design, with two pillars supporting, and maintaining the backplane.
FM ACOUSTICS FM115 Mono-push-pull circuit after
The figure is two stage of Semiconductor's great features. Semiconductor amplifier usually uses NPN and PNP phase combination of push-pull type structure, but this machine uses only eight NPN transistor. This simple to NPN composition push-pull circuit, it can be said is that the traditional corporate RESOLUTION series.
FM ACOUSTICS FM115 Mono after the class parameter: actual output capacity: 250Wx2, 450 (8 Ω) Wx2, 800 (4 Ω) Wx2 (2 Ω) gain: 30.5dB input sensitivity: 1.2V input impedance: 40 k Ω input: balanced (XLR) maximum output voltage: 140Vp-p distortion rate: average distortion rate 0.005% THD regeneration frequency ranges: < 1Hz 60kHz 3dB consumption electric power: 50W (standby) 500W (30% of output) 1.5kW (maximum) size: 430W×200H×450Dmm quality: 22kg.
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