SPEAKER SYSTEM DEVICE Russian patent published in 2023 - IPC H04R3/12 

FIELD: acoustics.

SUBSTANCE: speaker filter comprises a low-low pass filter, a high-low pass filter, a mid-pass filter, and a high pass filter. The first input is connected to the output of the speaker of the low-low frequency range, the first output of the first coil, the first output of the second coil, the first output of the midrange speaker, the first outputs of the first and second capacitors, the second input is connected to the second outputs of the third and fourth coils, the second output of the speaker low-frequency range, the second output of the third and fourth capacitors and the second output of the tweeter. The second output of the low-frequency range speaker is connected to the first output of the third and fourth coils, the first output of the high-low frequency range speaker is connected to the second output of the first and second coils, the second output of the midrange speaker is connected to the first outputs of the third and fourth capacitors, the first output of the high-frequency speaker range is connected to the second terminals of the first and second capacitors. The inductance values of the first and second coils are equal, the inductance values of the third and fourth coils are equal, the capacitance of the first capacitor is equal to the capacitance of the second capacitor, and the capacitance of the third capacitor is equal to the capacitance of the fourth capacitor.

EFFECT: increased linearity of the phase-frequency characteristic.

1 cl, 1 dwg