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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Need help with corner frequency calculations. posted by Cougar on January 22, 2015 at 16:47:59:
You usually want a high pass pole to be at least 2 octaves away from the lowest freq. of interest. For 15 Hz., you need a 1.5 μF. part, which combines with 33 Kohms to "corner" at 3.22 Hz.
Especially if phono is used as a source, I would place the I/P high pass pole in between 16 and 18 Hz., to reject infrasonic noise, like that generated by record warps. In a "typical" SS amp, O/P trafo core saturation is not a concern, but power wasting noise should not be amplified.
Eli D.
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Follow Ups
- RE: Need help with corner frequency calculations. - Eli Duttman 17:15:44 01/22/15 (1)
- RE: Need help with corner frequency calculations. - Cougar 17:48:12 01/22/15 (0)
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