User Manual

PRE Guide28
Mic Preamp Controls
The Mic Preamps view provides all the essential
controls for a PRE channel in the Mix and Edit
windows.
Source and Input Impedance Selector
Clicking the up/down arrows in the Mic Preamp
window accesses two sets of controls. The top
half of this pop-up menu sets the input source
for the PRE channel to Mic, Line, or DI (instru-
ment). The bottom half of this pop-up menu
sets the input impedance for a PRE channel to
1.5 k, 15 k, or 1.5 M.
For more information see “Input Impedance
(Represented as Z)” on page 8 and “Source
Switch and LEDs” on page 8.
Mic Preamp Window Button
Clicking the Mic Preamp Window button
(labeled mic, inst, or DI) opens a floating Mic
Preamp window, an alternative to Mix and Edit
window views. See “Mic Preamp Window” on
page 29.
Phase Button
This button applies phase reversal to individual
channels.
High-Pass Filter Button
This button applies a high-pass filter to individ-
ual channels.
Each PRE channel includes a high-pass filter
with a center frequency of 85 Hz and a roll-off of
–18 dB/octave. Use the high-pass filter to re-
move microphone proximity effects, hum, rum-
ble, wind, and other low frequency sounds.
Pad Button and LED
This button applies an input pad to individual
channels to reduce input sensitivity by 18 dB.
Insert Button
This button enables insert points on individual
channels. PRE’s back panel has eight pairs of
Send and Return jacks for inserting external pro-
cessors (such as compressors or EQs) in the au-
dio path. Inserts are post the output trims.
If you do not have your signal routed through
an external effects unit, enabling the Insert will
effectively mute your signal.
Gain Indicator and Mini Fader
The Gain indicator features a mini fader to ad-
just gain to the input signal on the PRE. The
gain range for each input (Mic, Line, and Instru-
ment) is 0 dB to +69 dB, adjustable in incre-
ments of approximately 3 dB.
Phantom Power
This button toggles 48V phantom power to Mic
inputs. For more information, see “48V Switch
and LEDs” on page 9.