what tom jackson says resonates with me. I'm not a gear head and cosequently not well informed but a speaker
works in a range and what's put through it is easily changed.I often hear the V 30s being likened to an ice pick or whatever but is easy to lessen the treble on your amp(or guitar) to soften it.
also at good vol levels they perform differently than when quiet. same with you amp, completely different when
cranked, not just the level of distortion but the quality of the tone. then it(tone) changes depending on the room your in .then clean, crunch or driven all causing different responses.
so speakers do have a label, bright , punchy or whatever but imo that it's fairly easy to get a good sound out of them all, just a matter of tweaking.