User guide

Table Of Contents
System 5 Digital Audio Mixing System User Guide84
Parametric EQ
Each parametric EQ band has two knobs: one shared between frequency and Q, and another for gain. Press the upper switch to
the left of any frequency knob to toggle between Q and frequency. Use the gain knob to adjust the gain for that band. The lower
switch to the left of the gain knob switches that band In/Out.
The four bands are identical (20.5 Hz – 21 kHz) except the HiF and LoF bands can be either peak or shelf filters. Press the lower
of the switches to the left of the HiF or LoF knob to toggle between peak (switch lights green) and shelf (no light). This switch in-
dication is present only when displaying frequency on this knob, not Q.
The gain can be adjusted in approximately
1
/
8
-dB increments in the range -24 to +24 dB. As the gain is changed from 0, the LEDs
light dimly from the center LED in the direction turned (clockwise = boost); the peak level is indicated by a bright LED. The LEDs
light for every 2-dB change.
Q can be adjusted in the range 0.2–12 (higher value corresponds to narrower bandwidth). At a given Q setting, changing the gain
affects the bandwidth slightly: the bandwidth decreases as gain increases. This creates a wider area of boost/cut at low gain and
supports a more natural sound as gain changes without altering the Q. At full boost or cut, the bandwidth is measured 3 dB down
from the center frequency.
Since Q and Frequency share the same knob, both parameters are indicated on the knob LEDs: Frequency is indicated by a dim
LED at its proportional position from first to last LED. For example, 10 kHz would be approximately in the middle. Q is indicated
by bright LEDs extending to either side of the frequency LED.
The TFT screen above the Strip shows the resultant EQ curve (yellow when active, gray when bypassed).
Filters
Two filters are available on each channel. Four filter types are available:
HPF (high-pass filter), LPF (low-pass filter), BPF (band-pass filter), and NTCH (notch filter).
The knobs control the two filters that can be active at one time. The displays are:
F2tp (filter 2 type), F2Q(filter 2 Q), F2fr (filter 2 frequency), F1tp (filter 1 type), F1Q (filter 1 Q) and F1fr (filter 1 frequency).
Select a filter type by rotating the knob. Disable it by selecting OFF.
Rotate the frequency knob to select the filter frequency.
Rotate the Q knob to change Q for a notch filter or bandwidth for a band-pass filter. Filter Q is variable in the range 0.2–12.
Each filter can be switched In/Out separately. The filters are not attached to the EQ.
To help find problematic frequencies, the Notch filter can be put into a listen mode by pressing the Listen key next to the fre-
quency knob. This temporarily changes the filter to band-pass. The listen setting is not saved in the Title and is not automated.
Listen defaults to Off.
Use the EQ graph on the TFT display to create a filter with any desired bandwidth.
These LED indicators are for fast reference use only; consult the LCD and TFT displays for accurate values.
See “Channel Processor Order” on page 76.