elysia xfilter - Manual (Page 7)

7
Passive Massage
Mmm... The beautiful sheen a passive EQ adds on top of everything. We
all love it, we all need it!
Well, here is the good news: In addition to its four flexible active bands,
the xfilter features a switchable fixed LC filter for polishing the high fre-
quency range.
The filter mainly consists of a capacitor and a coil per channel, but unlike
the standard shelving designs, it has a slight resonance peak at 12 kHz
and starts to fall off at 17 kHz.
This way, the saturation-like storage effect of the shielded coil focuses on
the area around the peak without pushing the complete high frequency
spectrum too much.