wrote:
** Bob's book is Copyright 2011
In 2000, this article was published on the ESP site.
http://sound.whsites.net/vi.htm
The text accompanying figure 4 covers the same issue.
good article.
** Thanks.
indicates that the protection spikes can be worse than clipping.
** If they occur regularly, it makes the amp unusable with particular speakers.
The sound those spikes make is intolerable.
and the catch diodes are to protect the amplifier, not the tweeter.
** Tweeters are still protected by passive x-overs, which should remove most of the energy. Plus unlike clipping, users are not likely to let spiking go on for long before turning down the volume enough to stop it.
I still test power amps for propensity to deliver spikes, as descried in the article. Amps that failed the test spectacularly were particular models made by Yamaha, Bose and Phase Linear, among others.
..... Phil