Ik raakt in verwarring door deze tekst op je site:
The following figure shows some measurements with (bold) and without (normal) felt, confirming that the effect of the diffraction becomes less. Although the felt suppresses the presence range (2khz-4kHz), and the treble region 4kHz-10kHz), it hardly affect the region above 10kHz. This means that felt causes a relative increase of the upper treble, causing a zizz and sibilance to the sound, which is difficult to compensate in an electrical filter. Therefore, in the final version, no felt is being used.
Ik snap de verwarring. Grosso modo gaat het dus over de uiteindelijke vorm van de tweeter response, en met vilt is er dus relatief teveel afval (en met name teveel bundeling!) onder de zeg 10kHz. Of dat nu door die "bult" komt is dus minder van belang, en met dat argument raakte ik weer in verwarring!
