03-04-2013, 09:05 AM
ok, już mam
Cytat:An awful lot of effects pedals introduce distortion, yet they don't inherently endanger the loudspeaker, and they won't cause damage as long as the power to the driver is not excessive.
The harmonics caused by clipping can cause tweeters and midranges (in multi-way systems with passive crossovers) to fail if the power in them exceeds what the drivers can handle. But even with a square wave--as in a severely clipped signal--the fundamental makes up nearly 85% of the power, and the remaining ~15% is in the harmonics. Therefore, the amount of additional power delivered to the mids and/or tweets depends largely on the fundamental frequency of the note, how much clipping is occurring, and the crossover points.
The main destructive element in clipping lies in its deceptive power. An amp rated for X watts with a sine wave on the threshold of clipping will put out >X watts when clipping. In addition, the dynamic range of the signal will be compressed, since the peaks will be chopped off and the softer portions may be much higher than usual. Thus, with the clipped portions exceeding the amp's rated power and the softer portions greatly amplified, the average power in the signal could be much higher than you would think, given the amp's power rating. It could be high enough to damage the loudspeaker.
OO==++