The absolute best way to demonstrate this would be posting two recordings, where one recording represents the “real” amp through an IR, and the 2nd one is the amp model through the same IR. This could demonstrate the (alleged) difference in the attack. Not arguing here. You might be right. Personally I don’t experience any issues in this area.
Maybe.
But I don't have the DRRI anymore.
It was a rental.
And the thing I'm talking about doesn't seem to survive the mic'ing process let alone mimicking the mic'ing process with an IR.
So I'm not sure what this would really prove.
But if I still had the amp I'd definitely try it.
You never know till you try.
I suppose I could still try it with my Simul-Satellite though.
Not sure how to do it properly though.
I don't have a reactive load box or a separation room.
[Well I kinda do. It's a ancient Groove Tubes Speaker Emulator/Load Box and I believe it's supposed to be reactive.
But it hasn't been plugged in for decades and I'm afraid it'll blow up or blow up my amp.
I've also got an old Tom Scholtz Power Soak but it's not a reactive load.]
And then I'd have to pick an amp model in the Axe that's remotely similar to the Simul-Sat, and I don't think there's anything like that in there.
At any rate... I'm probably not going to do this, yek, because it'll just take too long and probably won't accomplish all that much.
But if I do, I'll let you know the results.
Thanks for the suggestion.
[I've done other experiments though comparing a mic'd signal I used to obtain an IR of my own speakers with the Cab Block signal using that IR, and I can hear no discernible differences.
So I'm quite convinced in the power of IRs to capture and fully reproduce a mic'd guitar cabinet.
I realize that that's a whole different issue and it's not why you suggested doing this.
Just wanted to say that I have no qualms using IRs to reproduce a mic'd cabinet.]