FILTER FOR MULTI-WAY SPEAKER SYSTEM Russian patent published in 2022 - IPC H04R3/12 

FIELD: acoustics.

SUBSTANCE: filter for a multi-band speaker system contains an LC low-pass filter, an LC high-pass filter and a mid-frequency filter, the outputs of which are designed to connect the dynamic heads, respectively, of the low-frequency, high-frequency and mid-frequency ranges, the LC low-pass filter consists of the first, second and third inductors and the first capacitor, the LC high-pass filter consists of the fourth inductor and the second and third capacitors, and the mid-frequency filter consists of the quadruple, fifth and sixth capacitors, while the terminals of the dynamic head of the low-frequency range are connected: the first - to the second terminal of the first inductor, and the second terminal - to the first terminal of the second inductor, the first terminal of the first inductor is connected to the first terminal of the first capacitor and to the "plus" at the input to the filter , the second terminal of the second inductor is connected to the second terminal of the first capacitor, the first terminal of the third inductor, the first terminal of the fourth inductor and the first terminal of the second capacitor, the second terminal of which is connected to the first terminal of the dynamic head of the high-frequency range, the second terminal of the fourth inductor is connected to the second terminal of the third capacitor, the first terminal of the fourth capacitor and the first terminal of the sixth capacitor, the first terminal of the third capacitor is connected to the second output of the dynamic head of the high-frequency range, the second terminal of the fourth capacitor is connected to the first terminal of the dynamic head of the mid-frequency range, the second terminal of the third inductor is connected to the second terminal of the sixth capacitor, the second terminal of the fifth capacitor and to the “minus” at the input to the filter, the first terminal of the fifth capacitor is connected to the second terminal of the dynamic head of the mid-frequency range, while the inductance value of the first inductor is equal to the inductance value of the second inductor, the capacitance of the second capacitor is equal to the capacitance of the third capacitor, and the capacitance of the fourth capacitor is equal to the capacitance of the fifth capacitor.

EFFECT: invention provides the increase in the linearity of the phase-frequency characteristics.

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