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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: Apparently the Popori has an even tamer impedance curve posted by Ralph on April 25, 2025 at 11:33:55:
Keep in mind the electrostatic driver itself looks like a capacitance as a load and is a Voltage device where a constant Voltage vs frequency produces a flat response.
Also, to get an accurate 1W1M measurement (that lets you estimate the SPL at another distance), one must be (the microphone that is) several times the speakers largest dimension. At work, to make it simple, with big speakers we measure at 10 meters and 28.3 volts.
This is -20dB down from the distance and driven at +20dB power. The result is a usable 1W1M measurement that can be accurately scaled in installations.
The older and maybe modern SS linear amplifiers could have issues with Electrostatic drivers, they are a harder load because they are a capacitive load, not resistive, that stresses the output "safe area" where the amplifier's protection can kick in and keeping it from producing the waveshape.
Tube amps (the tubes) have a much more fuzzy "thou shalt not go past here" behavior and have no such SOA instant death issues like the old days with SS.
Class D, not having safe operating area concerns would not have that particular issue.
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Follow Ups
- RE: Apparently the Popori has an even tamer impedance curve - tomservo 14:53:00 04/25/25 (1)
- Agreed - 13th Duke of Wymbourne 18:33:07 04/25/25 (0)
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