band pass filter circuit

In some large speakers, a three-way or even a four-way method is often used, in which case a band-pass filter is required.
A bandpass filter is a cascade of a high-pass filter and a low-pass filter . Figure 6-19 is a band-pass filter
circuit.
    It should be noted that the corner frequency of the low-pass filter is higher than
the corner frequency of the high-pass filter. If the reverse occurs, it becomes
a band-stop filter. ． For example, for a
band-pass filter with a bandwidth of 1 to 5 kHz , the corner frequency of the low-pass filter is 5 kHz, and
the corner frequency of the high-pass filter is 1Ⅱ7. Then substitute the values ​​into the
calculation formula to calculate the component values ​​and connect the circuit.