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geoff geoff is offline
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Default APOLOGIES TO ALL: PIEZO TWEETERS DO SOUND LIKE ****!!!!

On 17/02/2017 8:21 AM, PStamler wrote:
On Thursday, February 16, 2017 at 1:07:31 AM UTC-6, Paul wrote:
On 2/15/2017 10:13 PM, PStamler wrote:
At the risk of incurring a personal attack, I wish to report that I have tested common commercially-available capacitors, looking for the resonant frequency (frequency at which the device's impedance bottoms out; the cap stops behaving like a capacitor above this frequency and starts behaving like an inductor). The lowest resonant frequency I found was 5.3kHz, well within the audio range.


What was the capacitor value for that measurement?


It was a 3,300µF/50V Panasonic Series NHG electrolytic.



Maybe a little 'sweeping' to attribute the characteristics of that
capacitor to all capacitors . Especially given the typical application
of that type and value of cap.

geoff