I have found a 15" speaker with no writing or identification on it at all, now i was wondering, how can i figure out the ohms it can take and the total wattage ?
And out of interest, can i do this with cabs too without opening them up ?
Ohms is simple to measure. Max wattage never heard of a meter for that. And if a cab has several speakers without opening the cab you can only determine overall ohms.