hi, looking for a design, but is there any ?
btw, does not need to be very high quality
Hi,
Very easy to arrange for 1st order high pass by reducing the input
coupling capacitor. More complicated for 2nd order high pass and
not much more complicated for 3rd order high pass as all you do
is reduce the input coupling capacitor over 2nd order.
rgds, sreten.
Hi,
Very easy to arrange for 1st order high pass by reducing the input
coupling capacitor.
unfortunately not enough for a compression driver
Hi,
Assuming a standard chip amplifier the gain at the inverting input is one.
For noise reasons the feedback resistors should be fairly low impedance.
You can take any unity gain active high pass filter circuit, 2nd or 3rd order
and use it, only changing the circuits connection from the op-amps output
to the amplifiers inverting input, to get any 2nd or 3rd order filter function.
rgds, sreten.
Assuming a standard chip amplifier the gain at the inverting input is one.
For noise reasons the feedback resistors should be fairly low impedance.
You can take any unity gain active high pass filter circuit, 2nd or 3rd order
and use it, only changing the circuits connection from the op-amps output
to the amplifiers inverting input, to get any 2nd or 3rd order filter function.
rgds, sreten.
Hi,
Any active filter circuit designed for unity gain can be used with a amplifier
with gain by moving the unity gain point from the output to the inverting
input, the only caveat being the inverting input should be low impedance,
and it will be if you optimised the power amplifier for low noise.
I don't see what baxandall has to do with it. You can still incorporate
tone shaping in the gain feedback network without changing any of
the details of of the high pass network.
rgds, sreten.
Any active filter circuit designed for unity gain can be used with a amplifier
with gain by moving the unity gain point from the output to the inverting
input, the only caveat being the inverting input should be low impedance,
and it will be if you optimised the power amplifier for low noise.
I don't see what baxandall has to do with it. You can still incorporate
tone shaping in the gain feedback network without changing any of
the details of of the high pass network.
rgds, sreten.
found another one
though a bandpass, its for use with non unity gain amp
maybe it would for high pass
hmm, bandpass means small amount of gain, I suppose
well I see the issue/trouble of both having gain and trying to filter at the same time, I guess
though a bandpass, its for use with non unity gain amp
maybe it would for high pass
hmm, bandpass means small amount of gain, I suppose
well I see the issue/trouble of both having gain and trying to filter at the same time, I guess
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Looks like a fairly sure-fire way ......
ok, I forgot a few components around the power chip
better now ?
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