Tim, I sincerely appreciate your gentlemanly responses and your good intentions. However, I too feel a responsibility to separate fact from mis-information.
As someone with multiple electrical engineering degrees, and multiple decades of experience in electronics design, I can tell you that DC is not "seen as high frequency"; that a clipped audio waveform is not DC and is not seen as DC (as Blkadr correctly indicated, and contrary to what is stated in the article you quoted); and that the portion of a crossover network that is between the speaker terminals and the tweeter (which is designed to pass high frequencies and to block low frequencies, and may be simply a capacitor in series, or something that is similar at a simplified conceptual level but more elaborate) will block DC. DC is actually the LOWEST possible frequency, zero Hertz. Capacitors block DC, and impede low frequencies.
If DC is ABRUPTLY applied to a circuit, high frequency components may be briefly present, corresponding to the abruptness of the change in voltage. Those are referred to as transients. Similarly, the abrupt waveform changes I referred to in my earlier post, that occur when a LOW frequency waveform is clipped, contain HIGH frequency spectral components.
Which leads me to simply reiterate that my earlier post correctly explains why tweeters are commonly damaged by the clipped waveforms that can be generated by underpowered amps.
Best regards,
-- Al
