Impedance curve to spice equivalent in LTSpice

[Aucosticraft]

I have a thought of frequency dependent load ( this is how a speaker with enclosure behaves.) simulation . This will help me to built cross over and see how this behaves. not only that but we will also help me generate wave file which I can run on actual speakers and measure performance and hear how likely would this final design would perform. this will highly eliminate the need of buying crossover components for every small change.

So I am looking for how do I incorporate frequency dependent load with LTspice if have impedance measurement file in csv format.

Thanks.

 

[BesPav]

Loudspeaker Norton//Thevenin electrical equivalents and LTspice models - Page 1

 

[Lojzek]

Can you supply a textual file in a form of 3 columns of data (frequency, Z, phase) attached here?

 

[Aucosticraft]

Can you supply a textual file in a form of 3 columns of data (frequency, Z, phase) attached here?

Thanks , I will post here . I am basically looking for frequency dependent load. I will try to put and example with the csv file.

 

[bordodynov]

See

 

[Aucosticraft]

Can you supply a textual file in a form of 3 columns of data (frequency, Z, phase) attached here?

I have attached pic. The load resistor picks values from specified csv (ZMA) file.

So we can find how the whole would behave.

Attached :

ZMA file + photo to explain what I am trying.

 

[Aucosticraft]

See

Something close to. But I haven't understood the subckt.

also if the subckt is modified and other components are removed just leaving Frequency output and impedance, it would be hard to create as it does not pickup data directly from csv or zma file.

Is it possible for you to share the speaker subckt with me.

Any suggestions.

 

[Aucosticraft]

Loudspeaker Norton//Thevenin electrical equivalents and LTspice models - Page 1View attachment 837219

I am trying to understand the link you have sent.

 

[RajkoM]

Try here, maybe help to you:

http://www.micka.de/en/download/spice-tsp_en.pdf

 

[bordodynov]

Something close to. But I haven't understood the subckt.

also if the subckt is modified and other components are removed just leaving Frequency output and impedance, it would be hard to create as it does not pickup data directly from csv or zma file.

Is it possible for you to share the speaker subckt with me.

Any suggestions.

You can find my models (including many sound speakers) on my web page:
For LTspice users. Libraries of models, examples, etc

 

[Lojzek]

Use these values to better model your impedance profile of a driver in a sealed cabinet without any crossover components. All caps and inductors have negligible dcr of 1mR in this sim.