Interpret graphs

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Hi!

I need some help interpret graphs generated while playing around with in crossover design. I am just learning how to do this and I hope someone can be nice and help me.

Questions:
1. (Three in one) How does the system degree look? How should it look? What impact does this information have?
2. The impedance plot, will this speaker be hard driven, in respect to the phase angle?
3. Brief explanation of combination between impedance and phase angle is highly appreciated.
4. Is it bad to have high impedance even if the frequency response looks good?


Thank you!

Best regards
Mattias
 

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