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In Reply to: RE: Dynaco A-25s at ...Best Buy? posted by Kirk57 on July 02, 2009 at 15:55:10
i sat one on each a25 on the front edge, used a 0.5uF cap and a potentiometer, wired it in with bananas in parallel and POOF, extended highs AND lows (better transient waveform through the entire speaker). after about a month, i inverted phase on the tweeters and again POOF, even more extended highs.
it was so airy that i cant imagine not doing that if i ever own a25s again.
oyeah, they do well when stacked (2 pair in parallel) like advents.
...regards...tr
Who can hear any frequencies not blocked by such a small value capacitor? Certainly not Humans, perhaps Dogs can. The results obtained via phase reversal are indicative of a psycho-acoustic phenominia per any change.
you MUST be correct with that air of authority. conversely, i must be deaf and stupid as well.just for fun, try using your spell check function.
...regards...tr
Edits: 07/04/09
The capacitive reactance of an 0.5uf capacitor @ 6 ohms is almost 40,000 Hz & well over 50,000 Hz @ 8 ohms. Isolation & measurement of the so-connected driver will show no significant output within the range of Human hearing (whose upper limit is one full Octave or more below 40,000 Hz).
What am I missing? Drivers have output beyond the xover freq, unless you do bi- or tri-amp with digital xovers ... right or wrong?
Happy Ears!
Al
PS just asking, my own ears are not really interested ;)
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