JBL Speakers boxes are just made of MDF with very few internal braces compared to many other hifi brands. How, in these conditions do they not ring like bells?

I wonder whether JBL does "glue" the internal bracing with a damping material, in order to suppress de resonnances of the panels (as does KEF on the LS50 for example).

Does someone know that?



JBL 4367
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KEF LS50
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