PRE Guide
8
Channel Status Section
Each PRE channel provides switched control for
48V (phantom power), phase reverse, input pad-
ding, access to a unity gain insert send/return,
and a high-pass filter. In addition, all eight
channels have individual Mute switches and sig-
nal status LEDs.
Signal Present/Clip (SIG) LEDs
These LEDs indicate the status of a channel’s in-
put signal. Green indicates signal is present
(–45 dB) and red indicates clipping. When there
is no signal present, the LED is off.
When clipping occurs, the LED will remain lit
(or clear) depending on the Peak Hold setting.
Clips can also be manually cleared with the
Clear Clip switch.
48V Switch and LEDs
This switch applies 48V phantom power to Mic
Inputs. When lit (red), these LEDs indicate
which channels have 48V enabled.
Mic Inputs can provide 48V phantom power for
microphones that require it to operate. If Source
is set to Line or Inst, phantom power automati-
cally disengages to avoid sending 48V back to
the line level device through the XLR cable and
eliminates unnecessary power draw when not in
use for powering microphones.
Dynamic
microphones (like a Shure SM57) do
not require 48V to operate, but are not harmed
by it. Most
condenser
microphones (like an AKG
C414)
do
require 48V to operate. If you are not
sure about the 48V requirements for your micro-
phone, contact the manufacturer, or read your
microphone’s documentation.
Insert Switch and LEDs
This switch enables insert points on individual
channels. When lit (yellow), Insert LEDs indi-
cate which channels have their insert point en-
abled.
PRE’s back panel has eight pairs of send and re-
turn jacks for inserting external processors (such
as compressors or EQs) in the audio path. Insert
send levels are post output trim.
Pad Switch and LEDs
This switch applies an input pad to individual
channels to reduce input sensitivity by –18 dB.
When lit (green), Pad LEDs indicate which
channels have Pad enabled.
Although 48V can be used safely with most
microphones, ribbon microphones can be
damaged by it. Always turn off 48V, and
wait for the red 48V indicator light to go
completely off and any signal to dissipate
before connecting or disconnecting a ribbon
microphone.
Condenser microphones requiring 48V
should not be “hot-plugged” into a PRE Mic
Input where 48V is active before plugging
the microphone in. This could potentially
cause damage to PRE, as well as to un-
muted monitoring systems, due to a loud
“click” or “pop.”
To Next Page
Loading...
Need help?
General