What "kills" woofers is voltage and time. And the person turning the knob and not noticing "clipping". Or more accurately ignoring clipping.
IF the signal is "unclipped" there will be no issue, as long as you are under the peak power rating of the woofer.
And that is assuming that the manufacturer rated their speaker correctly.
Under "MUSIC" conditions. If you are playing Rap or what I call "Bass That Ate The Earth" type music, then you have to be more careful.
Because the MUSIC has more energy at low frequencies. The "Spectra balance" is shifted, compared to lets say , Jazz or Rock and Roll, etc. Which tends to be more balanced, or energy at all frequencies.
This is NOT to be interpreted as a BAD thing, it just IS.
Look at these O'scope "renderings". As mentioned earlier, Time and Voltage are the issues. Think RMS power is the same as AC voltage.
You'll notice that the AC voltage shown on both O'scope readings is 32 volts. Into a 1 ohm load that is 1,000 watts. So 1,000 is the same as saying 32 volts into 1 ohm.
BUT...notice that the voltage is the same in the lower O'scope rendering, but the waveform is now clipped. And that "Time" is much longer now versus the "Un-Clipped".
So we put 32 volts across the voice coil LONGER, causing more heat build up. Because it is the heat, that cooks the glues, and the woofer voice coils unravel like "slincky's. Heat cause the glues..to ...well "UN-glue"
So the question "Does too little power do more damage versus having too much power " (or more than the speaker is rated)??
From my experience with thousands of tech phone calls and working out in the field with retailers and installers, ...I'd have to say YES.
But...it is more becasue of the "knob turner" than anything else:veryhapp: