Class G/H Power Amp and Speaker Impedance?

DXMG503

Member
This is a bit out of my wheel house.

I have a Class G/H bass amp and a cab I'm trying to demystify. Maybe some of you can help answer a number of questions I have:

1. How do you measure your own cab's speaker impedance curve (trying to match it in the fractal)?
1.5 The process of matching a cabs reconant frequency is different from finding the full impedance curve, right?
2. Do class G/H amps even have an impedance curve, or is that just tube amps?
3. Say I wanted to play at quiet levels out of the power amp output with an IR, would I use a load box with a class G/H power amp like I would with a tube amp, or is this something totally differet?
I know you don't need one for class D.

Sorry if this isn't the right area to post this. It seemed the best I could find.

There used to be a thread on here about measuring your own speaker impedance curves, but it's either gone or inaccessable now (shows up on google search but link doesn;t work).
 
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