User Guide

Getting Started with Digi 00266
Setting Input Levels with Digi 002
Input levels for Mic/Line 1–4 are adjustable us-
ing the gain knobs on the top panel of the
Digi 002. Input levels for all other inputs on
Digi 002 cannot be adjusted in Pro Tools, and
need to be set at the source.
The key to setting input levels is to get the peak
of the signal as loud as possible while retaining
sufficient headroom to avoid digital clipping.
Signals that get close to the top of the meter in
Pro Tools LE use more of the full bit range (the
16 or 24 bits that make up each audio sample).
The more you maximize this bit range, the bet-
ter your sound quality. In addition, by setting
optimum levels, you'll get the lowest possible
noise and distortion.
To adjust input gain on Mic/Line inputs 1–4:
1 Connect an audio source to the appropriate
input connector on the back panel of Digi 002.
Microphones should be plugged into to an XLR
connector. Line inputs or instruments should be
plugged into a 1/4-inch TRS connector.
2 Press the Mic/Line/Instrument Selector switch
on the top panel of the Digi 002 to match the
type of device you connected.
3 If you connected a microphone that requires
phantom power, apply phantom power now by
pressing the 48V switch on the back panel of the
Digi 002.
4 Choose File > New Track and specify 1 Mono
Auxiliary Input track, then click Create.
5 Set the track input to the correct Digi 002 in-
put channel (Mic/Line 1–4).
6 Play the instrument or sound source at the
volume you will record.
7 Adjust the input gain for the channel using
the gain knob on the top panel of the Digi 002.
Increase or decrease gain until you are able to
achieve maximum peak levels in the Auxiliary
Input track meter without clipping. Typically
such peak levels are in the yellow area of the
meter.
Optimizing Gain Structure
In order to maximize the dynamic range and
signal-to-noise ratio of your recording, you’ll
want to apply the correct gain at each stage of
your audio chain.
◆ With microphones, place the mic close
enough to the source to maximize input levels,
but far enough away to avoid proximity effect,
then set the input gain on Digi 002.
◆ With line inputs and instrument direct in-
puts, raise the input level to achieve as strong a
signal as possible without excessive noise, then
set the input gain on Digi 002.
Mic/Line High-Pass Filters
Mic/Line Inputs 1–4 include a high-pass filter
set at 75 Hz. This filter can be useful for filtering
out low-end rumble from a noisy recording en-
vironment, microphone handling, or AC noise.
Set levels to avoid digital clipping. Clipping
occurs when you feed a signal to an audio
device that is louder than the circuitry can
accept, resulting in distortion. Digital clip-
ping is indicated by the red clip light at the
top of the Pro Tools on-screen meters.
High Pass Filter switches (top panel)
1 GAIN 2 GAIN 3 GAIN 4 GAIN
LINE/ INST
MIC
High Pass Filter switches