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OT Ratio ..funny numbers

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  • #16
    An output transformer designed specifically for use in a guitar amplifier should IMO have a -2db pass band wider by about an octave at each end than the loudspeaker which it will power. OT is part of a system and should be designed for particular power tubes, buying an OT with only Raa and power handling specified and nothing else is a lottery.
    Given that guitar loudspeakers generally cover, give or take, 65-6000Hz the answer presents itself. A 20-20.000Hz OT in a guitar amp is asking for trouble, especially when combined with a spaghetti style lead dress. Impedance ratio should be measured at midband , with a purely resistive dummy load, at frequency where a loudspeaker impedance is also resistive, this in most cases of guitar speakers is at around 400Hz. Hope to have confused you some more
    Aleksander Niemand
    Zagray! amp- PG review Aug 2011
    Without the freedom to criticize, there is no true praise. -Pierre Beaumarchais, playwright (1732-1799)

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    • #17
      Anybody having that much fun and with dimples like that has to be right...
      YouTube - vacuumvoodoo's Channel
      Bruce

      Mission Amps
      Denver, CO. 80022
      www.missionamps.com
      303-955-2412

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      • #18
        Originally posted by Bruce / Mission Amps View Post
        Anybody having that much fun and with dimples like that has to be right...
        YouTube - vacuumvoodoo's Channel
        The guy with dimples having fun in those vids from NJ AmpShow is the late Barry Weber aka Frankenstrat2 on The Gearpage forum.
        I believe these are the last videos of him having fun playing his favourite Strat before his untimely passing this last October. He was a dear friend of mine and many others.
        Anyway, not playing the guitar isn't stopping me from having fun and occasionally being right.
        Aleksander Niemand
        Zagray! amp- PG review Aug 2011
        Without the freedom to criticize, there is no true praise. -Pierre Beaumarchais, playwright (1732-1799)

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