Originally Posted by notnyt
I'm not talking about internal resonances, I'm talking about panel resonances. They're not the same, and damping will not stop panel resonances.
I know you weren't talking about it, but I'm talking about both... and yes I know they aren't the same thing.
The conclusion is still the same. The thing has to flex, otherwise there won't be a panel resonance.
Not sure what you exactly meant by "it's not just flex, it's resonances."
Resonances ARE a flex, and flexes are gonna cause noise/sound by displacing air particles.
You speak like they are two disassociative things or something...
Resonances are just a special sub-type of flexing action.
If you significantly reduced all-flex, then all-resonance will also be significantly reduced.
I just wanted to be more clear, as it is already too confusing for most people as-is.
There is also a third force that is often noticed... Box "rocking" motion.
Which is caused by the cone momentum at high excursions (generally at low Hz) and from being off-centered (relative to the COG of the object). This occurs even WITH a perfectly stiff box with no resonances, because it is DUE to insufficient box-mass to offset those cone forces and/or not being dual-opposed (i.e. a counteractive force).
Most of us know this as well, I'm just saying it for those that don't the WHY of it.