Even pro audio manufacturer don't seem to lowpass their loudspeakers. Compounded with aluminium dome tweeters having a breakup resonance around ~25 kHz, the pro

Even pro audio manufacturer don't seem to lowpass their loudspeakers. Compounded with aluminium dome tweeters having a breakup resonance around ~25 kHz, the problem /could/ exist; but since we don't hear above 20 kHz (and not much above 18~19 for most of us), the only possibility would some kind of mythical modulation I've never seen measured in real world design. Example: https://www.soundandrecording.de/app/uploads/2020/10/8361-FRE.png https://www.soundandrecording.de/app/uploads/2020/10/8361-FR... from https://www.soundandrecording.de/equipment/genelec-8361a-3-wege-studiomonitor-mit-voll-koaxialer-treiberanordnung-im-test/ https://www.soundandrecording.de/equipment/genelec-8361a-3-w...