A device to boost the low end depending on level for closed cabinet.
With circuit diagrams and examples.
With circuit diagrams and examples.
Hi, just for information, the following sentence is not exactly true : Q=0.71 has the
most linear response
-> Q = 0.71 means that you have a butterworth filter. So frequency response is the most flat as possible in the passband. However, the delay group is not constant.
-> Q = 0.58 means that you have a bessel filter. You lost a little bit voltage level until cut frequency but the delay group is constant
It means that if you send a square signal in a bessel filter, the output is a square signal. For butterworth, it is an almost a square signal: don't forget that a square wave signal is a sum of sinusoidal signals at different frequencies (harmonics). With a bessel filter the different sinusoidal signals are not "delayed" so the sum is the same as with no filter 😉
So for me, bessel (Q=0.58) is the most linear filter 😉
most linear response
-> Q = 0.71 means that you have a butterworth filter. So frequency response is the most flat as possible in the passband. However, the delay group is not constant.
-> Q = 0.58 means that you have a bessel filter. You lost a little bit voltage level until cut frequency but the delay group is constant
It means that if you send a square signal in a bessel filter, the output is a square signal. For butterworth, it is an almost a square signal: don't forget that a square wave signal is a sum of sinusoidal signals at different frequencies (harmonics). With a bessel filter the different sinusoidal signals are not "delayed" so the sum is the same as with no filter 😉
So for me, bessel (Q=0.58) is the most linear filter 😉