retested the mid with a different Zobel (10R + 6.8uF Poly ) and its made a huge difference, much much better now ☕ ( see previous post )
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This all sounds positive.
A question, In the proceeding graphs of the midrange.
The lower frequency extend into the 100Hz range which is not an issue.
If you are thinking about giving the midrange an easier ride and maybe have less distortion you could cross them at 200 - 400Hz, or possibly around the baffle step frequency off the speaker. All worth trying in Xsim and looking for a nice looking solution or two.
Is this the next phase and will you use your Behringer to accomplish the final aspect of the crossover design?
A question, In the proceeding graphs of the midrange.
The lower frequency extend into the 100Hz range which is not an issue.
If you are thinking about giving the midrange an easier ride and maybe have less distortion you could cross them at 200 - 400Hz, or possibly around the baffle step frequency off the speaker. All worth trying in Xsim and looking for a nice looking solution or two.
Is this the next phase and will you use your Behringer to accomplish the final aspect of the crossover design?
well ive tried different cap values and im unable to get the xover to drop off at 200hz , which was my original idea .....
whatever cap i used it always drops of at the baffe step / 600hz region , i dont know why this is , the zobel is only affecting the <150 and >5000 response
the following graph shows 240/120/60uF cap values. they only seem to affect the roll off from the 600hz point , i am unable to alter the roll off region
the blue curve is 60uF without the zobel
behringer is for DSP after the xover is completed
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If you make sure you have saved your existing work in XSim, you could try the attached component values. They are for a third order bandpass filter. The results will depend on the impedance and response of your driver. It is likely the parallel notch may not be needed, I left it in there just in case you needed it.
Depending on your midrange and its electrical parameter's it may not want to play, and as you say you only can manage a nice decay in the 600Hz region.
If you have already tried a 3rd order filter then a a 4th order or higher may be a solution.
If all else fails i assume your behringer should be able to tidy this up for you.
Depending on your midrange and its electrical parameter's it may not want to play, and as you say you only can manage a nice decay in the 600Hz region.
If you have already tried a 3rd order filter then a a 4th order or higher may be a solution.
If all else fails i assume your behringer should be able to tidy this up for you.
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Thanks for the circuit dia., that looks very different to my simple bandpass on the mid (!) , i may have to look into that, but before I do I will need to take an impedence measurement for both drive units + then at least do a listening test by ear and see how good or bad it sounds....
seasons greetings......may the new year show accurate Xsim simulations (!)
really couldnt get Xsim to get close to real life component values needed. and thats with me taking an impedance measurement of the midrange, and tracing the FR and loading the files into xsim .... even with using the XT25 tweeter online impedance + FR files, it was still nowhere near... anyway;
just for closure I guess, i have finished the xover. 2nd order bass + HF , bandpass on mid..... zobels on bass + mid ( these really helped at the freq.extremes ) ... final component value for tweeter was 3.7uF + 0.22mH
the sound is much much better than the stock xover, the bass boom has gone, the mid is very clear with no breakup that i can hear, and the HF is airy but not harsh whatsoever... i intentionally chose the lower HF curve ( Blue curve ) , as im not a fan of in your face HF , in fact the speaker sounded good without the HF connected
going to mount the HF components inside the cabinet, to prevent accidental tweeter blow ups
really couldnt get Xsim to get close to real life component values needed. and thats with me taking an impedance measurement of the midrange, and tracing the FR and loading the files into xsim .... even with using the XT25 tweeter online impedance + FR files, it was still nowhere near... anyway;
just for closure I guess, i have finished the xover. 2nd order bass + HF , bandpass on mid..... zobels on bass + mid ( these really helped at the freq.extremes ) ... final component value for tweeter was 3.7uF + 0.22mH
the sound is much much better than the stock xover, the bass boom has gone, the mid is very clear with no breakup that i can hear, and the HF is airy but not harsh whatsoever... i intentionally chose the lower HF curve ( Blue curve ) , as im not a fan of in your face HF , in fact the speaker sounded good without the HF connected
going to mount the HF components inside the cabinet, to prevent accidental tweeter blow ups
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yes i tried many diff. values for both cap+air core ....i try much higher or lower values straight away , so can see which way the driver responds, then narrow it down using a midrange value , and then fine tweak ...... even tried 1st order , green curve ( But that was hopeless, huge peaks at 3.5k xover point ) this tweeter was more unpredictable than the other drivers , despite it having a ruler flat impedance beyond its 600hz FS ( according to the spec data )
just a few examples....have about 50 more (!)
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