Vintage Asylum

Posted by hifitommy (A) on July 04, 2009 at 16:10:00

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

• RE: Dynaco A-25s - add tweeters - Ron Oehlert 21:44:50 07/04/09 (3)
  In Reply to: RE: Dynaco A-25s - add tweeters posted by hifitommy on July 04, 2009 at 16:10:00

  
  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.
  

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  • thanks for the kind words - hifitommy 22:06:27 07/04/09 (2)
    In Reply to: RE: Dynaco A-25s - add tweeters posted by Ron Oehlert on July 04, 2009 at 21:44:50

    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
    
    

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    Edits: 07/04/09

    • RE: thanks for the kind words - Ron Oehlert 09:39:42 07/05/09 (1)
      In Reply to: RE: thanks for the kind words posted by hifitommy on July 04, 2009 at 22:06:27

      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).
      

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      • um, huh? - tubegarden@aol.com 14:45:11 07/10/09 (0)
        In Reply to: RE: thanks for the kind words posted by Ron Oehlert on July 05, 2009 at 09:39:42

        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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