Z-Systems z-Q6 six-channel mastering equalizer - Manual (Page 3)

z-Q6 manual
3
Controlling Filter Parameters
+00.0 +00.0
0.4
1K00 3K15
*0.4
1K00
0.4
1K00
lo
1K00
hi
+00.0 -02.4
left/right front
+00.0 +00.0
1K00
0.4
Figure 2 - EQ control mode
Press the EQ/Volume select button to toggle between EQ and volume control modes The display
will appear as in Figure 2. Notice that the active channel group is indicated on the top row (we
will discuss how to change active channel groups in the next section). There are six filters for each
channel group: four bell filters and two shelving filters. Each filter, or "band" of EQ is shown as a
vertical column with the gain parameter first, the center frequency below it, and the Q last. The
shelving filters do not display a Q; instead, there is an indication of "lo" or "hi" for the low- and
high-shelving filters, respectively.
To control a band of EQ, press the band select button below the band of interest. As shown in
Figure 2, an asterisk will appear in the bottom row of that band's display to show that that
particular band is the active band. To change the parameters for the active EQ band, use the left
knob
for the gain, the middle knob for the center frequency, and the right knob for Q.
It is important to note that when the gain parameter of any filter is set to +00.0 dB, that filter is
actually bypassed. That is, no math is being performed for that band by the DSP. Therefore, you
need not worry about returning the other filter parameters to a neutral state to remove that band
of EQ. This holds true for both the bell filters and the shelving filters.
The z-Q6 uses a very special collection of digital filtering algorithms. These algorithms are unique
to our products and are the reason for the z-Q6's very special sound. The digital filtering
algorithms are the same minimum-round-off noise algorithms as those found in our z-Q1 two-
channel equalizer, and we use the same floating-point implementation in the z-Q6 as in the z-Q1.
Our algorithms and implementations result in unrivaled measured and sonic performance.