Ok I'm going to break my short paragraphs rule, suck it up ADHD forumers.
Me too
@norminal . I've heard it myself, mainly in Alnico speakers which is where most of my experience lies. I wonder if V30s are less prone to it since they're by design quite tight, controlled speakers, and also higher wattage so in most situations aren't really being pushed? Whereas something like a 15 watt alnico blue, I've experienced them get thicker and less bright sounding over several months of regular use. I actually wouldn't like to gig a new one for the sake of the audience
The other thing that's quite hard to test - V30s are often driven by higher gain amps with more controlled power sections, which are better at making the speaker obey instructions. Whereas, say, an ac30, with no neg feedback and power section sag etc, kind of lets the speakers do what they want more, and possibly that makes it easier to hear the speaker's resonant frequency/ xmax change as the suspension loosens up?
The V30 video is fantastic
@The other John Browne , seriously top work! It's amazing how different the speakers all are from each other with little corelation to age. Most people form anecdotal opinions from a very small selection of speakers, so if you happened to have a fizzy but loose Marshall label one, a thick Mesa OEM and a very mid focussed Celestion label one, you'd take to the forums and say "It's all true! I can prove it!" Whereas someone else who just gets a single Marshal V30 and it happens to be dark might just think they got a dud.
Now, what would be interesting (and quite amusing) would be if your break in tests show a clear difference, and you discover that a lot of the differences in your V30 collection could be attributed to how hard they've been worked over their lives. I don't don't expect it to, to be fair.