Hi, I'm putting together a subwoofer for my home theater. I already assembled the amp, I still need to make the low pass filter.
What do you think of this:
https://aboutcircuitdiagram.blogspot.com/2012/02/subwoofer-filter-circuit.html?m=1
If someone has a better diceno, please, if you don't mind, pass it on to me.
What do you think of this:
https://aboutcircuitdiagram.blogspot.com/2012/02/subwoofer-filter-circuit.html?m=1
If someone has a better diceno, please, if you don't mind, pass it on to me.
That needs a four gang 100k pot per channel, so look elsewhere.
Use a fixed filter to simplify matters. Usually it would be around 100Hz.
Use a fixed filter to simplify matters. Usually it would be around 100Hz.
If you are using an AVR for HT then you do not need a filter for the sub. For LFE channel set xo and volume in the Receiver and if there is not enough attenuation in the Receiver you just need a volume control with a buffer.
Sorry but I only have a 2-channel team, what do you think of this?
https://www.elcircuit.com/2021/06/subwoofer-controller-low-pass-filter.html
https://www.elcircuit.com/2021/06/subwoofer-controller-low-pass-filter.html
I don't know how many frequencies you want be able to change.
Otherwise a 4p3t switch can also be a solution, or one of those 23/34 step attenuators.
Otherwise a 4p3t switch can also be a solution, or one of those 23/34 step attenuators.
Hello vex,
I have enjoyed good results using this 4th order crossover. You can adjust the overlap between the LPF and HPF because it is a state variable circuit.
For your application, you could simply use the LPF section.
Hope this helps,
David
https://www.marchandelec.com/xm1-electronic-crossover.html
Steep 24 dB/octave slope.
Crossover frequencies available: 10 - 20000 Hz.
Outputs are always in phase with each other.
Small 2" x 3" circuit board.
Fourth order constant voltage design (Linkwitz-Riley alignment).
XM1-A Electronic Crossover $ 45.00
XM1-FMA Frequency module, $ 10.00
I have enjoyed good results using this 4th order crossover. You can adjust the overlap between the LPF and HPF because it is a state variable circuit.
For your application, you could simply use the LPF section.
Hope this helps,
David
https://www.marchandelec.com/xm1-electronic-crossover.html
XM1 Electronic Crossover
Steep 24 dB/octave slope.
Crossover frequencies available: 10 - 20000 Hz.
Outputs are always in phase with each other.
Small 2" x 3" circuit board.
Fourth order constant voltage design (Linkwitz-Riley alignment).
XM1-A Electronic Crossover $ 45.00
XM1-FMA Frequency module, $ 10.00