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I need a good clear detaled explanation of how clipping and DC current blows the subs, exactly why and how a clipped signal can cause dc current from an amp and cause damage to it.
posted
Clipping doesn't truely blow subs.If I feed the exact same signal to a sub and keep it the same shape(flat at top and bottom) these would blow the sub the same.
The reason is the amount of root mean power the sub gets. A clipped signal closely appears to be a square wave. Square wave have a higher rms factor. basically for a 100 volt peak to peak out on a 2 ohm sub you would have a wattage of (100*100)/4=2500 watts which the speaker might take short term. a square wave or clipped signal gives the speaker a constant +5 volts followed by a constant -5 Volts.(10volt peak to peak).
Draw a 10 volt peak to peak sine wave. Draw a 10 volt peak to peak square wave.Draw it right on top of the sine wave. shade in the area between the sine wave and the square wave. The shade area is the amount of extra power (heat) the sub has to absorb.
Plus a sine wave pushes a woofer to the end of its stroke and slowly pulls in back in. Like a swinging motion of a pedulium.
The square wave woofer is force to it extreme made to stay pulled in a half cycle,and from a standing start push fully out and held a half cycle.
posted
Let me add- you cannot blow a speaker with clipped signal alone. I dont care what anyone says. There is a DC COMPONENT in a square wave, however, it's NOT true DC.
True DC takes the driver in ONE direction ONLY, and NEVER (at least until power is removed) allows the driver to move in any other direction, except back to rest. If the driver does move, say, to the exact opposite direction of it's previous travel, then you are most certainly NOT giving it DC, but AC.
Flame me, but I AM right.
------------------ Ron Hawkins
Sometimes the majority only means that all the fools are on the same side.
Use your ears to judge components, NOT your wallet! K.I.S.S.
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