Solid State Logic THE BUS+ User Manual page 15

D-EQ Switches
By default, the LF and HF bands are first order (6 dB per/oct) shelving filters with nominal attack and
release times set in the D-EQ side-chain. However, the following switches allow for some different options:
HF BELL
Changes the filter type from shelf to bell for the HF band. Switching to this also changes the available
frequency points, providing the ability to apply EQ in the critical upper-mid-range - see Frequency Points
page for more information. Switch lights bright white to indicate HF BELL is active.
HF FAST
Changes the time constants of the HF D-EQ band to 1 ms attack, 50 ms release. Switch lights bright white
to indicate HF FAST is active. Nominal settings are 3 ms attack 50 ms release.
Pressing and holding the switch allows for a third AUTO setting to be chosen. Switch lights magenta to
indicate this. Time constants for AUTO are 10 ms Attack, AUTO release.
LF FAST
Changes the time constants of the LF D-EQ band to 10 ms attack, 50 ms release. Nominal settings are
30 ms attack,100 ms release. Switch lights bright white to indicate LF FAST is active
Pressing and holding the switch allows for a third AUTO setting to be chosen. Switch lights magenta to
indicate this. Time constants for AUTO are 10 ms attack, AUTO release.
LF/HF GAIN
The LF GAIN control (left-hand side of the unit) provides +/- 10 dB of boost or cut to the
low frequency band of the D-EQ. This is control over the 'static' band of the EQ. The LF
GAIN can be used to apply a boost/cut of 'regular' EQ to compensate for any dynamic EQ
activity. For instance, you may use the dynamic part of the EQ to compress the lows but
add back in a bit of LF GAIN to compensate. The control is a 31-position stepped control.
Think of LF/HF GAIN being the equivalent to MAKE-UP Gain control you have for
the Bus Compressor.
The LF/HF GAIN control (right-hand side) is the same as described for the LF GAIN (a
static EQ control) but the MODE of The Bus+ determines whether it is a static gain for the
LF or HF band.
For CLASSIC STEREO and � S/C STEREO, the control acts on the HF Band. This is
indicated by the G/HF LED being RED. Please note, this is the only parameter on the
right-hand side of the unit that is active in either of the stereo modes.
For DUAL MONO or MID SIDE modes, the control acts on the LF band. The colour of the
G/HF LED may be either not lit or green in this mode but this is simply reflecting whether
the 'G-Series' mode is active or not - see next page.
THE BUS+ User Guide
Red LED indicates the control
functions as HF GAIN
Tutorial
15