Crossover Network

[eTech]

I see that the Ls and Cs in the cross over are working into the impedance of the speaker so I would like the impedance in the model to be some what close.

Hi Ron

So I've run a couple of tests with and without the Zobel impedance correction on the IB385-8. I can ena/disable Zobel by setting a param in the model. I've attached a sim for each. Have a look.

eT

 

[audioguru]

With the Zobel networks then the crossover networks are loaded correctly.

 

[eTech]

With the Zobel networks then the crossover networks are loaded correctly.

thx AG

eT

 

[eTech]

eTech,
Where did you get "tweeter.lib"?
Please attach you spice and lib files. I would like to give it a go.
You can plot V(tweeter)+V(mid)+V(wolf) to get the total frequency response.
Ron,

----edited----
I don't know the frequency response of the raw speakers so we really don't know the total frequency response of the system.

I've uploaded a library in the forum "Simulation" section.
I removed the Zobel stuff from the library because its better kept external to the library.

eT

 

[eTech]

Here is the frequency response of a Dayton 385-8. There is a nasty bump at 1.2khz. Hopefully the cross over network will role that off.
The frequency response below 200hz will depend greatly on the enclosure.
View attachment 88875
AND
Here is the impedance of this speaker. I don't know if the SPICE model takes into account the inductive effect above 200hz.
View attachment 88876

Hi

Here is the spice speaker test and impedance response plot for the IB 385-8.
eT