PRE Guide
12
Powering Up PRE
To use PRE as a stand-alone microphone
preamplifier:
1
Connect AC power to PRE.
2
Power on PRE.
At power up, PRE units will default to the last
settings they had at power down.
Making Signal Connections to PRE
Depending on how you plan to use PRE, the way
you connect it to your studio will vary.
While you can use PRE with a variety of audio
setups, all you really need is a line input device
(such as a mixer or an A/D converter) to monitor
PRE outputs.
Connecting Audio Sources
To connect a microphone:
1
Press the Channel Select switch for the Mic In-
put you will be using.
2
Change the input source to Mic, by pressing
Source one or more times.
3
Make sure the gain is turned down, especially
if the monitors are up.
4
Verify 48V phantom power is disabled. Press
48V, so that the 48V LED is off.
5
Plug a microphone directly into the Mic Input
on the back of PRE. These inputs accept XLR
connectors.
6
If your microphone requires phantom power,
press 48V.
7
Turn the Gain/Param control to raise the gain.
Use the Peak Meter to determine the proper
level.
8
Repeat these steps for additional microphone
connections.
To connect line level and instrument level sources:
1
Press the Channel Select switch for the
Line/Inst Input you will be using.
2
Change the input source to Line or Inst (as re-
quired), by pressing Source one or more times.
3
Plug a line level source (such as a synth, out-
put from your mixer, or a microphone or guitar
that has been amplified by an outboard preamp)
or a DI (direct instrument) source into a
Line/Inst Input on the front or back of PRE.
These inputs accept balanced/unbalanced TRS
connectors.
4
Repeat these steps for additional connections.
To prevent damage to PRE or your monitor-
ing system, mute your monitoring system or
set levels to their minimums, before making
audio connections. This will prevent
against sudden spikes and surges, as well as
possible acoustical feedback if a micro-
phone is connected and left “open.”
Although 48V can be used safely with most
microphones, ribbon microphones can be
destroyed by it. You should always turn off
48V, and wait for the red light to go com-
pletely off, before connecting or disconnect-
ing a ribbon microphone.
If using line inputs with balanced line level
devices, be sure to use balanced to balanced
cables to maximize performance.
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