FILTER FOR MULTIBAND ACOUSTIC SYSTEM Russian patent published in 2024 - IPC H04R3/12 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and can be used in acoustic systems of household or professional sound reproducing equipment. Filter for a multiband acoustic system comprises a low-pass filter (LPF) and a high-pass filter (HPF), outputs of which are intended for connection of dynamic heads of low-frequency and high-frequency ranges, respectively, wherein high-pass filter includes four capacitors of identical capacitance, wherein the first and second filter capacitors are connected in parallel by the first leads to the "plus" input and the second leads are connected in parallel to the first lead of the dynamic head of the high-frequency range, and the third and fourth filter capacitors are connected in parallel by the first leads to the "minus" input and by the second leads are connected in parallel to the second lead of the dynamic head of the high-frequency range, low-pass filter includes eight inductance coils, all filter inductance coils are made with the same inductance value, wherein the first and second inductance coils are connected in parallel by the first leads to the "plus" input and the second leads are connected in parallel to the first leads of the third and fourth inductance coils, which by second leads are connected in parallel to first lead of dynamic head of low-frequency range, fifth and sixth inductance coils are connected in parallel by the first leads to the "minus" input and the second leads are connected in parallel to the first leads of the seventh and eighth inductance coils, which are connected in parallel by second leads to second lead of dynamic head of low-frequency range, wherein a broadband dynamic head is additionally installed, its first lead being connected to the "plus" input, and the second lead is connected to the "minus" input.

EFFECT: high linearity of the phase-frequency characteristic of the device while maintaining uniformity of its amplitude-frequency characteristic and simplifying the design while achieving audiophile accuracy of output of the acoustic system.

1 cl, 1 dwg