Hi,
I am fairly new to designing audio hardware. This post is to just reassure that my understanding is correct. Initially I was confused regarding what my ideal PVDD value should be.
We are planning to use the following speaker with a rated power of 3W and maximum power of 5W.
My understanding now is that PVDD does not have any direct relation to the output audio signal amplitude, but if the signal is above PVDD, it will be clipped.
So to get the speaker working output power in the 3W-5W range, I need around 6.5V PVDD atleast as per Ohm's law. Maybe around 8-10V just to be safe.
Now if I have a PVDD that can potentially drive more power than the speaker can tolerate, I need to limit the signal amplitude using amplitude control and/or digital clipper so that the maximum power ratings of the speaker is no exceeded.
Please point out if my understanding is wrong.