Hi All,
I need a circuit for an active filter to use witht my vented box system to make it 6th order. It would be a 2nd order High pass filter with a Q of 2. Preferably adjustable.
Patrick Snyder of SpeakerLab fame did one called the 575 based on the RC4134 opamp. I am looking for a more modern version of this circuit.
Can anyone point me in the right direction?
bwhitejr
I need a circuit for an active filter to use witht my vented box system to make it 6th order. It would be a 2nd order High pass filter with a Q of 2. Preferably adjustable.
Patrick Snyder of SpeakerLab fame did one called the 575 based on the RC4134 opamp. I am looking for a more modern version of this circuit.
Can anyone point me in the right direction?
bwhitejr
see 3.2.1 in link PDF http://www.delta-audio.com/Active_Filter_Four/Active_Filter_Four_manual.pdf
Sallen key topology with buffered Q and is adjustable independant of Fc.
Sallen key topology with buffered Q and is adjustable independant of Fc.
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