Hallo togehter,
i just simulated a 2-way-box and with a very simple crossover i got a really good result.
That made me sceptical and i looked at different sites for crossover designs. What i found was always more complicated and in my simulation i got worse results than my one.
Here is the Box:
I just see, that quc (my simulator) cutted the paramter d=11 and QL=7 for vented box.
...and here the models i used:
What i'm doing wrong?
i just simulated a 2-way-box and with a very simple crossover i got a really good result.
That made me sceptical and i looked at different sites for crossover designs. What i found was always more complicated and in my simulation i got worse results than my one.
Here is the Box:
I just see, that quc (my simulator) cutted the paramter d=11 and QL=7 for vented box.
...and here the models i used:
What i'm doing wrong?
Attachments
I'm using qucs. Therefore i created the driver/box models as library components.hi, what software is this ?
I know, but other simulation software also has only the Thiele Small parameters. Thats why i'm wondering about the (a lot) different results.The simulation all looks fine, so long as you've got some drivers that are perfectly flat. As soon as you try to work with real drivers that have their own inherent rolloffs etc, it becomes a lot more difficult.
thank you it seems a very instresting softwareI'm using qucs. Therefore i created the driver/box models as library components.
Here is the laudspeaker library for qucs.
De-zip it and copy it to .qucs/user_lib
View attachment Loudspeaker.lib.zip
De-zip it and copy it to .qucs/user_lib
View attachment Loudspeaker.lib.zip
The Loudspeaker.lib i did by myself, the electrical models for speaker an boxes i found in internet.where you downloaded them ?
Yes, why not?800Hz X/O?
Just to explain the "workflow":
I'm starting with 1kHz and then, depending on the result of simulation, i change the parameters as long until i'm enjoing the result.
It's a lot of experimenting, but not much science behind.
Last edited:
Why?That poor little SB21RDC sure won't enjoy the result.
Ok, i will try that.You'd be well served to aim for an 1800-2KHz X/O.
Why?
You can't drive a tweeter that low without severe distortion or failure. Two times Fs is about as low as you can go.
Ok, i will try that.
Also be aware that your models are over simplified and will not reflect the final result.
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