- If your speakers are capable of handling significantly more than your amplifier can produce, driving them with a clipped signal will not likely hurt them.
- If the speakers can handle 3 or 4 times the power that your amplifier can produce, there's virtually no way to damage your speakers (no matter how clipped the signal is).
- If your speakers are rated for the same power handling as your amplifier is capable of producing cleanly, driving them with a clipped signal for extended periods of time may cause speaker damage and/or premature failure.
- If your speakers are rated for the same power handling as your amplifier is capable of producing cleanly, driving them with a square wave signal for extended periods of time will likely cause speaker damage.
He really knows what he is talking about but the introduction is somewhat misleading. he is just saying you wont blow a 1000wrms(thermal) subwoofer with a 200wrms amp. that doesnt mean a 900w amp wont damage the same sub however.
Basically what he wrote is what common sense should tell you.
But I dont get why he repeated the same twice thing at the end...
I think what he meant was if your amp produces a higher RMS wattage of power than the speakers can handle you will cause damage.