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In Reply to: RE: Amandarae's beautiful thread posted by D Mike on January 02, 2017 at 05:39:24
I have a pair of 3 ohm caps and 8 ohm 802D's as well as a pair of Werner Jagusch autoformers. I can't find it at the moment, but he shows a variable resistor in parallel with the primary of the autoformer. Presumably the autoformer will change impedance based on attenuation.
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Bob Crites' 3636 autoformers are decent, have 1dB steps and currently sell for $35 each. One could use a copper alligator clip on a jumper to go around the taps. Sometimes its nice to use the high Z approach as smaller capacitors are generally less expensive than large. A swamping resistor across the driver can be used. Klipsch touted the high reflected Z reduced "Transient Intermodulation Distortion" (Otala).
3636 AUTOFORMER
Karlson Evangelist
What would the swamping resistor do in this case?
a swamping resistor would reduce the variation in impedance and possibly, response.
Karlson Evangelist
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