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PEQ 3000 User Manual
Global Section continued
COPY FLAT
MASTER
GAIN
LOCK
STEREO
MID/SIDE
LEFT/RIGHT
SHOW GLOBAL VIEW
•
•
MASTER: The output gain of the EQ. It can be used to compensate for the
overall level added or reduced by using the EQ bands. Range: +/- 16 dB
• •
LOCK: Click this lock, and the Master Gain setting is locked, and will not
change when you change to a different preset
• •
COPY: This will copy all band settings from Mid to Side or Left to Right.
This may be convenient as a good starting point, if adjustments have
been made in Stereo and you suddenly realise that you need to continue
in Mid/Side or Left/Right mode. Note: The PEQ 3000 has two sets of 12
EQ bands. The first set are shared between Stereo, Mid and Left. The
second set are shared between the Side and Right
• •
FLAT: This will set all currently-shown bands to 0 dB. Note: The PEQ 3000
has two sets of 12 EQ bands and you only see one of the sets at a time.
The first set is shared between Stereo, Mid and Left. The second set is
shared between the Side and Right
5.6 Phase (All Pass Filter)
SHOW
PHASE CONTROLS
PHASE IN/BYPASS
The variable Phase feature in the Global section allows you to alter the phase of
a signal by a variable amount. This adjustment can be used to control the phase
alignments to inputs for multi-microphone setups, such as a drum kit for example,
or multiple microphones on the same guitar cabinet. For example, phase adjust-
ment will be able to bring out more of the original instrument energy that may
have been colored due to the multiple signal paths from instrument to mix.
The effect works by using two all-pass filters in series and controlling the center
frequency of the filters to change the phase shift. The all-pass structure allows for
a flat level frequency response; however, the filters delay different frequencies by
different amounts, resulting in a frequency-dependent phase shift.
Additional features have been added to this fundamental design by allowing
control over the frequency range of the center frequencies via the High and
Low settings:
• •
HIGH: This can be used on instruments and vocals with a frequency
range in the upper audio spectrum
• •
LOW: This is best used on instruments with a greater low-frequency
content, such as a bass guitar or kick drum
The Phase Frequency Range allows a greater range of frequencies to be covered
by the control. You can switch between a 0 to 90° or 0 to 180° phase shift range by
using the 180/Deg or 90/Deg Phase Adjust Range buttons.
5.6.1 How to use the Phase feature
1. When used on a multi-microphone setup on a drum kit or guitar cab,
it is important to remember that PHASE has to be enabled in all the
plug-in instances involved
2. Select either LOW or HIGH in all the instances (tracks) depending on
what frequency range you will adjust
3. The phase difference between the channels will come from adjusting
the Phase parameter differently across the instances (tracks). You may
need to iterate a few times across all the involved instances to find the
optimal settings
Note: Enabling the phase on just one channel will not have much effect on the
sound, and may not be audible.
5.6.2 Phase Controls
180
90
0 to 180 Deg
0 to 90 Deg
PHASE ENABLE
HIGH
LOW
•
•
PHASE Enable button: Enable this on all instances (tracks) that are
involved in the multi-mic setup, such as a drum kit, for example
• •
PHASE: The degree of phase change can be adjusted with this control
• •
RANGE: The phase adjustment range can either be 180°or 90°
• •
HIGH: Phase adjustment frequency range. This can be set to HIGH for
vocals, keyboards or guitars etc.
• •
LOW: Phase adjustment frequency range. This can be set to LOW for bass
guitar or bass drums etc.
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