In reply to:
...because there's no more juice...
(...)
So, if there is no more juice than why is there a concern of blowing the speaker?
I think you're confusing power side and signal side here. When he says "no more juice" he means on the power side of the amp circuit, not the signal side. When the power side sags, you end up with a distorted signal.
In reply to:
If you have a 300 W or 400 W rated speaker what harm can be done from a 50W amplifier? A 50W amplifier can not put out more than 50W, period. The speaker woun't even break a sweat.
Except all 50W pushes aren't created equal. As clipping increases, the wave starts to resemble a pulse (or square) wave... the best naturally occuring type of wave to freeze voice coils. You can probably push a 400W rated speaker many times past it's rating with a 200Hz sine wave, feed the same speaker a fast pulse and it'll do a Vesuvius impression rather quickly.
In reply to:
A real danger comes from 'matching' amplifier and speaker. For instance, if you have a 200W rated speaker and 200W amplifier than you have to watch for clipping.
You do have a point here, indirectly. A higher (amp rating:speaker rating) ratio will either increase the damage done in a period of time, or drop the period of time required to do the damage.
Bren R.
