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MC7540 4-channel digital power amplifier

Using self-developed large-capacity switching power supply digital amplifier. Compared with the open-loop or semi-closed-loop control methods, the composite feedback control can greatly reduce the power supply fluctuation. the effects of the err
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    MC7540 4-channel digital power amplifier

    The switch power supply digital power amplifier is adopted. Compared with the open loop or semi-closed loop control,

    the composite feedback control lowers influence by power fluctuation, switching apparatus and LC filtering error and

    unideal situations, the distortion, frequency response, damping factor and other key technical indexes have been

    increased and the listening is perfect. The switch power is designed and optimized in accordance with operating

    characteristics of the audio amplifier, strong power, swift reaction and poor interference on audio signal. Except for

    short circuit, over current, over temperature, ultra-high frequency and other protection circuits, the human-centered

    design makes operation easy and prevents possible error operation. 1U height 19-inch standard rack size, small volume,

    lightweight and combination of fixed and mobile installation. There are two operating mode available: STEREO

    (standalone operations of A, B, C and D under such mode) and PARALLEL (the device outputs mono signal source

    through the dual amplifier system).


    MC7540 4-channel digital power amplifier


    Specifications and parameters


    Output4x300W
    Frequency response:20Hz~20kHz ±3dB
    Total distortion:1% (at 8Ω and 350W)
    Input sensitivity:+4dB * (1.23V)
    Input Impedance:10kΩ(electronic balance)
    SNR:≥80dB
    Dimensions:483x45x500(mm)
    Net Weight:5.40kg



    MC7540 4-channel digital power amplifier

    MC7540 4-channel digital power amplifier dimension figure