APOLOGIES TO ALL: PIEZO TWEETERS DO SOUND LIKE ****!!!!
so if your 3,300 uF cap had a series resonance at 5.3 kHz, that implies an
inductance of about 0.25 uH which has a Z of about 9 mOhms.
The ESR will easily swamp that and Z is so low so as not to have any practical impact at any audiofreq.
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