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Tubinhard

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Posts posted by Tubinhard

  1. I am not a "good" technician, so I need some specifics.

    "Secure a DC voltage source: 35V to 75V."

    Please define a DC voltage souce that would generate those voltages.

    Short all leads and terminals together to remove residual cap charge.

    Since we have wires from the voltage source hooked up to both positive and negative through this process (including reversing the polarity) -- what "leads and terminals" are we shorting, and once identified, how are they shorted?

    With that out of the way...

    My understanding is that PIOs are "lossy", that is -- they do not hold a charge for very long. The cap is charged, and then immediately begins to "drain". So, poor dielectric absorbtion properties. In fact, they are not doing what they should be doing.

    Any chance at all that this procedure may be causing a slight breakdown of the dielectric, resulting in some "lossiness"?

  2. Keith, that's great.

    Man, that room does sound a lot like mine.

    You might want to PM/email Leok about future crossover mods. I'm confident they would elevate the Chorus' to another level. Not much to it really, and makes an unbelievable difference.

  3. Guy, if you don't mind me asking -- where did Craig "flame" you? He just said you were way off base with your opinion -- I don't think that constitutes a "flame". I can't figure out where all of this anger is coming from.

    These vintage integrateds have a lot more going on in them, and much more to offer than any of the modern integrateds. You get a REAL preamp section, with a PHONO stage, FIXED bias which runs the output tubes properly, tube rectification, a balance control, and tone controls.

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