May be i can measure myself t/s parameters but i don't know the procedure !!!
I can test with a sin wave, square and sweep of both but some procedural problem are present :
-I need a microphone for measure and not for voice or similar
-Even If i use a good voice micropone it can modify the data
-I know the relation between T/S param and the "virtual" electric param for simulation, but not the ones between "what i read from instrument " and T/S param.
I have a lot of instrument ( oscilloscope, wave generator, audio microphones, my PC ) but i don't know " how to use ".
You won't need a microphone for most of the measurements, so don't worry about that.
You should get your hands on The Loudspeaker Design Cookbook by Vance Dickason. It has a complete chapter dedicated to measurements of loudspeakers.
But, before you start off you should ask yourself if it is worth the effort. If the driver is really old then maybe you're better off buying a new one? Just a thought but I don't know the condition of the driver so...
Maybe there are some webpages that describes the procedure of TS measurement, but I haven't found any. Which is to bad because it would have been interesting to compare Dickason's methods with someone else's.
So for now I can only point to his book. Maybe you can find it in the city library?