That's a good point, but I don't have much of a way to do that both the mids and woofer have a slight dip there in there responses.
That's a good idea. When the components come in, I'll measure the responses individually. As for the midrange, it can go that low because it's intended to be full range.
Looks like you're rapidly gaining insight into the fundamentals of a 1st order network. Hafta agree with @elnaldo that performance will likely suffer from a 10dB depression in the midrange. Assuming you're still using 8Ω GM-85/8 drivers, I'm curious why you have them wired in series for a 16Ω load rather than parallel for 4Ω. That alone reduces relative output level. You could try setting them in parallel in Xsim just to see how that compares:
This is some really interesting stuff that I'll try out, but I will tell you that I am using Dayton Audio designer series 12inch woofers now.Looks like you're rapidly gaining insight into the fundamentals of a 1st order network. Hafta agree with @elnaldo that performance will likely suffer from a 10dB depression in the midrange. Assuming you're still using 8Ω GM-85/8 drivers, I'm curious why you have them wired in series for a 16Ω load rather than parallel for 4Ω. That alone reduces relative output level. You could try setting them in parallel in Xsim just to see how that compares:
View attachment 2526049
"Tune" values of C2 and L1 as shown above to set bandpass crossover frequencies similar to where they are in the series configuration. Those corner frequencies appear to be roughly 250Hz on the high pass side (capacitor) and 2800Hz on the low pass side (Inductor), based on factory published impedance curve. Though actual driver samples may vary.
I'm also curious about the woofer inductor value, which seems high for a 4Ω woofer. Big woofers with their large, inductive voice coils typically have a rapidly rising impedance shortly after resonance. Published resonant freq. for Jensen J12W is 30Hz. If impedance settles back down around 4Ω by 60Hz before it's inductive climb, then crossover frequency could actually be that low, or thereabout:
View attachment 2526075
So another thing you could experiment with is tuning that inductor value down to see if it adds more energy higher up in the bass region.
Xsim is an excellent tool for delving into this subject. Some expert members here appear able to master this stuff in their sleep. For the rest of us, it's fun to work up a circuit from what we think we know of theory, then watch the results inexplicably defy reason.
It's all about the learning!
I did the change so that I might see the difference:Looks like you're rapidly gaining insight into the fundamentals of a 1st order network. Hafta agree with @elnaldo that performance will likely suffer from a 10dB depression in the midrange. Assuming you're still using 8Ω GM-85/8 drivers, I'm curious why you have them wired in series for a 16Ω load rather than parallel for 4Ω. That alone reduces relative output level. You could try setting them in parallel in Xsim just to see how that compares:
View attachment 2526049
"Tune" values of C2 and L1 as shown above to set bandpass crossover frequencies similar to where they are in the series configuration. Those corner frequencies appear to be roughly 250Hz on the high pass side (capacitor) and 2800Hz on the low pass side (Inductor), based on factory published impedance curve. Though actual driver samples may vary.
I'm also curious about the woofer inductor value, which seems high for a 4Ω woofer. Big woofers with their large, inductive voice coils typically have a rapidly rising impedance shortly after resonance. Published resonant freq. for Jensen J12W is 30Hz. If impedance settles back down around 4Ω by 60Hz before it's inductive climb, then crossover frequency could actually be that low, or thereabout:
View attachment 2526075
So another thing you could experiment with is tuning that inductor value down to see if it adds more energy higher up in the bass region.
Xsim is an excellent tool for delving into this subject. Some expert members here appear able to master this stuff in their sleep. For the rest of us, it's fun to work up a circuit from what we think we know of theory, then watch the results inexplicably defy reason.
It's all about the learning!
It might not be done yet, but overlaying before and after curves shows noticeable improvement.
Do you mean the FRD files?
Got the files, Thanks!
Wow, you did an awesome job. I really appreciate the amount of effort here. I'll try that in person when I can and show you. Thanks alot!
I am wondering how mine(how ever slightly) is different then yours? Thanks again, just ordered the parts.
Amazing that worked out so well. Never though to try inverting tweeter polarity. Difference is indeed slight.
Had read about FPGraphTracer but not yet tried it. Your example shows it does a great job of creating data from an image. Got it downloaded now.
Hello. Why in a 3 way system you would run a tweeter that low? I think you could play those mids a couple of octaves higher, even a 1st order low pass filter, and use the tweeter from 3 or 4 KHz.
Thank yall for helping me out. I recently started to go down a long and confusing path known as diy speakers, and yall gave me the directions. I ended up using the design that Stuart made for it was the best sounding, plus I did a few mods of my own.
