Hi,
15 year ago I have design a 3 way DIY speakers (76 liters) with these drivers:
Tweeter: Visaton KE25SC
Midrange: Visaton DSM50FFL
Woofer: Monacor SPH250KE
Unfortunately, at that time I was very inexperienced and had not used crossover design software, so by doing some simulations I realised that the frequency response is not flat.
For this reason I like to update my crossover without re-design from zero, just replace some inductors and capacitors and resistors.
Becouse most of my drivers are Visaton I have used BoxSim and after a lot of work I have found a good compromise with a budget of only 150 Euro of components.
The result seem good becouse the frequency response is flat.
After this I have tried to see what happen with VituixCad and unfortunately there are differences and the frequency response is not flat like BoxSim.
In particular there is an evident bump at 600/700 Hz.
At the moment I am stuck because I don't know who is right: BoxSim or VituixCad or simply there are other options that I don't have set.
Attached there are some screeshots that show what happen.
Do you think that I can trust of BoxSim ? or VituixCad is more accurate ?
Thank you at advance !!
15 year ago I have design a 3 way DIY speakers (76 liters) with these drivers:
Tweeter: Visaton KE25SC
Midrange: Visaton DSM50FFL
Woofer: Monacor SPH250KE
Unfortunately, at that time I was very inexperienced and had not used crossover design software, so by doing some simulations I realised that the frequency response is not flat.
For this reason I like to update my crossover without re-design from zero, just replace some inductors and capacitors and resistors.
Becouse most of my drivers are Visaton I have used BoxSim and after a lot of work I have found a good compromise with a budget of only 150 Euro of components.
The result seem good becouse the frequency response is flat.
After this I have tried to see what happen with VituixCad and unfortunately there are differences and the frequency response is not flat like BoxSim.
In particular there is an evident bump at 600/700 Hz.
At the moment I am stuck because I don't know who is right: BoxSim or VituixCad or simply there are other options that I don't have set.
Attached there are some screeshots that show what happen.
Do you think that I can trust of BoxSim ? or VituixCad is more accurate ?
Thank you at advance !!
Attachments
Last edited:
Member
Joined 2003
At the very least. the bright red dot on the VituixCAD schematic is trying to tell you that your 3.9uF cap is disconnected.
You have right I have fix it and change other paramters and now the response is similar thank you !!!
I have already reversed the polarity in the woofer on both software and the result is what I expect.
I think that I have found a good point of start:
Attached the old (2010) and new (2023) crossover with 3 software: BoxSim, VituixCAD, Xsim.
All software show similar result.
I have created 2 different projects: one with all measures from dibirama and one with only woofer measure from dibirama (an Italian site) and the rest from visaton.
In all cases the measures from dibirama are similar to Visaton, so I can consider it right.
The new crossover have different advantages:
1) The frequency response is more flat.
2) The woofer polarity is invereted to compansate the phase.
3) The impendance is always upper then 5 ohm.
4) Very cheap upgrade, no need to replace the expensive inductors.
The downside is that on 1 Khz the impendence is very high, but I don't sure if this is problem.
After update this crossover I can start with the misurations that with a bit of lucky can be not too far from the simulation.
What you think ? there are other aspects that I have missing ?
Thank you at adance !!
Attached the old (2010) and new (2023) crossover with 3 software: BoxSim, VituixCAD, Xsim.
All software show similar result.
I have created 2 different projects: one with all measures from dibirama and one with only woofer measure from dibirama (an Italian site) and the rest from visaton.
In all cases the measures from dibirama are similar to Visaton, so I can consider it right.
The new crossover have different advantages:
1) The frequency response is more flat.
2) The woofer polarity is invereted to compansate the phase.
3) The impendance is always upper then 5 ohm.
4) Very cheap upgrade, no need to replace the expensive inductors.
The downside is that on 1 Khz the impendence is very high, but I don't sure if this is problem.
After update this crossover I can start with the misurations that with a bit of lucky can be not too far from the simulation.
What you think ? there are other aspects that I have missing ?
Thank you at adance !!
