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Speaker power allocation debugging
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| First check the loudspeaker and power amplifier is connected with whether reasonable, according to Figure 5.1 electrical input method, broadband noise test signal is fed into a mixer, the total output to 85dB, use the millivoltmeter ( ordinary multimeter frequency characteristic is poor, can only work to 1000H: left and right ) were measured every speaker input end, respectively. Fine adjustment of each amplifier attenuation button, so that the output noise power ratio and the loudspeaker power proportion of agreement. Such as NOW, 400W, 250W, 100W four speaker, the speaker 400W power on a discovery into the only low, namely the maximum noise power ( power ) of / 40, but also transfer testing other speakers the distribution of the power to the noise power ( power ) 1 / 40 (note that the impedance, power, voltage conversion between ). |
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