The electrical load a speaker in a cabinet presents (or not even in a cabinet) is a lot more complicated than a circuit containing a resistor, inductor, and capacitor
https://testhifi.com/2019/02/11/acousti ... impedance/If you forget about the radiation impedance (which you need to calculate the speaker efficiency) and the cabinet, the driver is an electro-mechanical transducer so in addition to the resistance of the voice coil and the stopped inductance (when the coil is not moving) of the voice coil their is the moving mass of the speaker which looks like an inductance and the spring constant of the speaker suspension that looks like a capacitance. The cabinet, ports, and damping material would introduce additional capacitive, inductive, and resistive circuit elements.
https://audiojudgement.com/speaker-equivalent-circuit/Since you are not limited anymore to paper, pencil, and a slide rule like the old days there are many free circuit analysis programs available that you could do a very good circuit representation of your speaker driver, cabinet, and crossover.
To do better you would have to get into programs that can do finite element analysis.