Quick question - if the upgraded crossover didn't change the measurements from the stock, then how is it better in terms of sound?
Read post number 26 of this thread.
How can the fix(es) (from stock to upgraded x-overs) be validated if it cannot be measured? This is one of the foundations of math and science, no?
There are a lot of ways to measure inductors, capacitors, and resistors besides inductance, capacitance, and resistance.
Take capacitors for instance. There are a lot of variables that all have audible effects on the sound. And a lot of them can be measured. Things like dielectric absorption, dissipation factor, etc. Some things that are tougher to measure also have an effect. For instance, the thickness of the film verses the thickness of the conductive material. Sprayed on conductive material verses a rolled film. Then there is the type of dielectric material from polyester, to polypropylene, to Teflon. And all of those sound different.
You can make tons of changes like that without effecting the frequency response.