Amp Problem - 'Breathing Speakers'

[Dave Krooshof]

>My guess (semi-uneducated)
>
I've seen 'breathing' <- good word!   happen in a tube-amp a friend built.
He made a variable coupling (totally interesting feature*).
The higher it was set, the tighter the amp would sound, but at a certain
moment it would start to breath. This was a LF oscilation.


Dave.




*) lowering to coupling caused the amp to sound free-er.
It was more musical. It was more dependant on the impedance of the
speaker and the *room*. The music sounds in your room, though it's not
very well balanced. The setting between a good amp (even frequency curve)
and a free amp (wobbely curve) is one of taste.
The feature is kinda hard to realize in a solid state amp.
This is the single one reason I found so far to go through the hassle of
using tubes.

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Dave Krooshof http://www.xs4all.nl/~krooshof
geluidstechnicus @ http://www.ahk.nl/the/theatertechniek_ov.html
webmaster: http://www.popronde.nl
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