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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: RE: 6SL7 Ratings posted by danlaudionut on December 23, 2010 at 08:43:04:
"...phase deviation in my speaker is minimal or as minimal as posible.
The cap is a 4uFd GE Mtr Run bypassed with a .1uFd Vit Q for a crossover @~5KHz."
That cap produces about 45 degrees of shift in an area that's critical to vocal tonality and balance. I have to agree with Thorsten here; by comparison, 20-30 degrees of amplifier shift at 20kHz or above seems truly inconsequential. As for resonance, it seems unlikely that you're hearing the fundamental ultrasonic vibration. The resonance probably creates mechanical disturbances in the diaphragm that effect reproduction at much lower frequencies.
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Follow Ups
- Phase Shift - Triode_Kingdom 12/23/1010:13:01 12/23/10 (1)
- RE: Phase Shift - danlaudionut 13:37:13 12/23/10 (0)
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