Solid State Logic THE BUS+ User Manual page 18

Tutorial
Frequency Points
The illustrations below show you the frequency to which each needle position corresponds to. The default frequency of the LF Shelf
is 60 Hz. The default frequency of the HF Shelf is 6 kHz. The default frequency of the HF Bell is 4 kHz.
LF
HF
HF
BELL
The HF BELL filter is a Proportional Q design, reaching a Q value of 1.87 at maximum boost/cut (10dB). The Q is 1.04 at 5 dB.
THE BUS+ User Guide
18