Thanks to ya’all! Lots of useful information. Thank you @lanx0003 for your master class in physics, sorry I didn’t catch all of it, although I have a PhD 🥸.
Maybe you could send me more details in private (with a physics/maths lesson😜)
Decibel X is a nice simple tool. I did a little test drive.
First, it happens so that the sound is nicer using my ps audio DS’ preamp in direct mode.
Second, I can go up to 100 on that preamp and the speakers will follow no problem. At 100, I get +- 90dB coming out. (I tried a few seconds very gently, I can already see a few 😲 and 🫣’s out there).
Going back through je JR, that level is reached at 80%, which means there is another 20% extra dangerous power (or whatever you would call it), and the speakers would go above 90dB …(I didn’t try) That is the accidental range on this amp where any driver would be damaged, especially tweeters at high frequencies (I saw them smoking last time, the membrane literally melted while pushing the volume up with a test tone)
Seems like Pass Labs are very appreciated by WA owners. Looking for PLb’s, found a pair of Chord spm1400 mk2, and Mcintosh 12000 with good discounts. I wonder if anybody has tried those.