TRANSIENT CONTROLLING METHOD OF SPEAKER USING COUNTER ELECTROMOTIVE OF SPEAKER

摘要

PURPOSE:To operate a speaker with fidelity according to the waveform of an input signal, by comparing the input signal with a signal at speaker terminals and feeding back a counter electromotive signal of the speaker to a speaker driving main amplifier. CONSTITUTION:An R is placed at a position where a main control signal of the speaker and a sample control signal shown in note 2 are interlocked. An AMP3 is placed to isolate a sample signal shown in note 1 and a speaker control signal shown in note 3. An L is provided for the speaker impedance matching. The signal in note 2 is obtained from speaker terminals through a resistor or the like. The speaker control signal of note 3 is given to be negative to the main control signal of the speaker. The balancing point of an AMP5 is arbitrary.