Enceintes ultra douces

[jeffyjpn]

(05-18-2020, 03:35 PM)n.d.b a écrit : Tiens une Sonus Faber Cremona 


Commentaire de Stereophile :
However, both traces in this graph are also perturbed by discontinuities at around 120Hz and 900Hz, which might indicate the presence of problematic resonances. The solidly built cabinet was generally dead to a knuckle-rap test, but did seem a little lively in a few places. Investigating the cabinet's vibrational behavior with a plastic-tape accelerometer, I found modes present at 387Hz, 477Hz, and 539Hz (fig.2). It's possible that the presence of these panel resonances correlated with the trace of coloration I heard with the clarinet. What might be more possible is a strong resonance at 900Hz in the output of the upper port (not shown). This port doesn't appear to do much of anything, but the resonance indicates that something is amiss at this frequency.
https://www.stereophile.com/content/sonu...asurements

Voilà typiquement une enceinte excitée dans la plage de fréquence susceptible de poser problème.

Je les avais éliminées aussi   merci de l’info