UNIVERSAL ELECTRICAL EQUIVALENT OF LOUDSPEAKER Russian patent published in 2021 - IPC H03F1/34 

FIELD: sound amplification technologies.

SUBSTANCE: universal electrical equivalent of a loudspeaker refers to sound amplification technology and is intended for use in the development, adjustment and measurement of electrical parameters of amplifiers of audio frequency signals in both discrete and integral versions. In the circuit of the device, the connection of the third resistor to the connection point of the first inductor coil with the simulator of the moving system of the loudspeaker head is broken and a unidirectional multi-position switch is introduced, which allows connecting the connection point of the first inductance coil with the simulator of the moving system of the loudspeaker head or to the simulator of a closed housing with a phase inverter, either to the introduced simulator of a closed case, consisting of a fourth inductor, or to an introduced simulator of a closed case with a passive emitter, consisting of a fifth inductance coil connected in series and a circuit consisting of a parallel connected fourth resistor, a third capacitor and a sixth inductor, or to an introduced a horn simulator consisting of a seventh inductor and a fifth resistor connected in series.

EFFECT: expanding the simulation capabilities of the device.

1 cl, 1 dwg