Luxman M-7 Stereo Power Amplifier Vintage Audio Very good Condition Maintained

Description: A stereo power amplifier developed by inheriting the development concept of the B-10. The CSSC (Complimentary Single Stagger Circuit) circuit is used to reproduce the rise of the sound more vividly. The CSSC circuit is configured with direct connection complementary at all stages. The first stage is a complementary circuit of dual FET differential and cascode-connected transistors. The second stage uses a base-grounded type current transmission circuit, and the cutoff frequency is high enough that the amplifier bandwidth can be secured with only the phase rotation of the first stage, realizing natural signal amplification without the need for sufficient phase correction. The current amplification stage is a three-stage Darlington complementary circuit with a high amplification rate, and the final stage is a push-pull configuration using six large bipolar transistors (Pc150W) with a multi-emitter structure per channel, ensuring excellent driving capabilities. The unique ODβ (Optimized Dual NFB) circuit is used to unify the tones of all bands. General NFB uses a method of separate feedback for DC and AC. In this case, AC affects the sound quality of the mid-high range, and DC affects the sound quality of the low range. However, a servo amplifier is inserted only in the DC area to control the low range, giving a large amount of NFB, creating a sense of inconsistency in the tones of the mid-high and low ranges.The ODβ circuit used in the M-7 eliminates the DC servo amplifier while ensuring DC stability by highly refining the bare characteristics of the circuit, resulting in a natural sense of unity in the tones. A unique high-inertia power supply is used for the power supply section.The M-7 uses a toroidal power transformer with high regulation, and the bare characteristics have been improved by increasing the instantaneous supply capacity with a large-capacity block capacitor, which changes the small voltage fluctuations generated by the music signal into relaxed fluctuations, achieving a power supply that sounds natural to the ear. Type: Stereo power amplifierContinuous effective output: Stereo: 230W+230W (4Ω) 150W+150W (8Ω) Mono: 460W (8Ω)Input sensitivity: 1V/150W (8Ω)Input impedance: Coaxial: 47kΩ/Balance: 66kΩGain: 31dBTotal harmonic distortion: 0.004% (1kHz, 8Ω)/0.03% (20Hz-20kHz, 8Ω)Frequency response: 20Hz-20kHz +0 -0.1dB/10Hz-100kHz +0 -1.0dBS/N ratio: 115dB (1kHz, IHF-A)Input terminals: Coaxial (RCA) L/R/Balance L/ROutput terminals: 3-way large vice type L/R/Speakon terminal L/RAccessories: Large power meter/attenuator/BTL switch/line phase sensor/remote power terminalPower supply voltage: AC100V, 50Hz/60HzPower consumption: 350W (Electrical Appliances and Materials Control Law)Maximum external dimensions: Width 467 x Height 212 x Depth 440mmWeight: 26.5kg

Price: 2999 USD

Location: setagayaku

End Time: 2024-11-14T14:13:21.000Z

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