Since most of the current speakers use a multi-cell sub-band playback design, there must be a device that can divide the full-band music signal sent by the power amplifier into high-pitched, low-pitched or high-pitched, mid-range, and low-range outputs as needed. In order to connect with the corresponding speaker unit, the frequency divider is such a device. If the full-band signal is directly sent to the high, medium, and low-range units without distribution, the portion of the "excess signal" outside the range of the unit's frequency response will adversely affect the signal reduction in the normal frequency band, and may even make The treble and midrange units are damaged.
From the circuit structure point of view, the frequency divider is essentially an LC filter network composed of a capacitor and an inductor coil. The treble channel is a high-pass filter, which only passes the high-frequency signal to block the low-frequency signal; the bass channel just wants to reverse it. Only the bass is passed to block the high-frequency signal; the mid-range channel is a band-pass filter, except that the frequency between the two low-high and high-frequency points can pass, and the high-frequency component and the low-frequency component will be blocked. In the actual crossover , sometimes in order to balance the sensitivity difference between the high and low woofer units, attenuating resistors are added; in addition, some frequency dividers also include an impedance compensation network composed of resistors and capacitors. Make the impedance curve of the speaker more flat to facilitate the amplifier drive.
Since most of the current speakers use a multi-cell sub-band playback design, there must be a device that can divide the full-band music signal sent by the power amplifier into high-pitched, low-pitched or high-pitched, mid-range, and low-range outputs as needed. In order to connect with the corresponding speaker unit, the frequency divider is such a device. If the full-band signal is directly sent to the high, medium, and low-range units without distribution, the portion of the "excess signal" outside the range of the unit's frequency response will adversely affect the signal reduction in the normal frequency band, and may even make The treble and midrange units are damaged.
From the circuit structure point of view, the frequency divider is essentially an LC filter network composed of a capacitor and an inductor coil. The treble channel is a high-pass filter, which only passes the high-frequency signal to block the low-frequency signal; the bass channel just wants to reverse it. Only the bass is passed to block the high-frequency signal; the mid-range channel is a band-pass filter, except that the frequency between the two low-high and high-frequency points can pass, and the high-frequency component and the low-frequency component will be blocked. In the actual crossover , sometimes in order to balance the sensitivity difference between the high and low woofer units, attenuating resistors are added; in addition, some frequency dividers also include an impedance compensation network composed of resistors and capacitors. Make the impedance curve of the speaker more flat to facilitate the amplifier drive.
Since most of the current speakers use a multi-cell sub-band playback design, there must be a device that can divide the full-band music signal sent by the power amplifier into high-pitched, low-pitched or high-pitched, mid-range, and low-range outputs as needed. In order to connect with the corresponding speaker unit, the frequency divider is such a device. If the full-band signal is directly sent to the high, medium, and low-range units without distribution, the portion of the "excess signal" outside the range of the unit's frequency response will adversely affect the signal reduction in the normal frequency band, and may even make The treble and midrange units are damaged.
From the circuit structure point of view, the frequency divider is essentially an LC filter network composed of a capacitor and an inductor coil. The treble channel is a high-pass filter, which only passes the high-frequency signal to block the low-frequency signal; the bass channel just wants to reverse it. Only the bass is passed to block the high-frequency signal; the mid-range channel is a band-pass filter, except that the frequency between the two low-high and high-frequency points can pass, and the high-frequency component and the low-frequency component will be blocked. In the actual crossover , sometimes in order to balance the sensitivity difference between the high and low woofer units, attenuating resistors are added; in addition, some frequency dividers also include an impedance compensation network composed of resistors and capacitors. Make the impedance curve of the speaker more flat to facilitate the amplifier drive.
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