Hello. I don't have much information on how to adjust the Q factor; I just read on the Sound AU website that subtractive crossovers are not good. I can't say I fully understand it either. I just want to make the best active crossover I can around 250Hz, and that's why I won't be using the subtractive crossover PCBs I have. I will make a circuit like in Project 9. I can't import these boards into Turkey because our import limit, including postage, is $30. If there's a place where I can buy a similar PCB at a reasonable price, or if you could send me the layout files, I would appreciate it.
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In this case you don’t have to. It is already correct. What you have to do is ensure accurate component values.
Yes but it is also impossible to import to Turkey. Any layout file available? İf yes please Pm
I now understand that subtractive crossovers can also be LR, but after reading on the Sound Au site that these types of crossovers have issues, I decided not to use my ready-made PCBs. I want to achieve the best and most accurate sound possible because I am obsessive about it. Maybe I wouldn't hear a difference with Project 9, I'm not sure, but I want to build the best one possible.
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You might consider a State Variable crossover scheme. These are my personal preference, simpler circuit, frequency set by only 4 equal value resistors or capacitors, phase coherent, and more.
An excellent write up, in this forum, by member @jinkels here:
https://www.diyaudio.com/community/...tz-riley-state-variable-active-filter.419530/
Elliot Sound (ESP) thinks highly of them too:
https://sound-au.com/articles/state-variable.htm
I don't know of a ready-made board for a 4th-order version, but I haven't been looking for one either, as my needs are already met. OTOH, it shouldn't be too hard to design a board for fabrication.
An excellent write up, in this forum, by member @jinkels here:
https://www.diyaudio.com/community/...tz-riley-state-variable-active-filter.419530/
Elliot Sound (ESP) thinks highly of them too:
https://sound-au.com/articles/state-variable.htm
I don't know of a ready-made board for a 4th-order version, but I haven't been looking for one either, as my needs are already met. OTOH, it shouldn't be too hard to design a board for fabrication.