dbx iEQ-15 User Manual page 11

iEQ
PeakStopPlus Limiter Control
®
This control engages the PeakStopPlus™ limiter. It sets the threshold level at which ∞:1 gain reduction
will begin to occur� It is capable of a range of 0dBu through "OFF" (+20dBu)� When the threshold
control is set to "OFF", the limiter is effectively disabled, and no gain reduction will occur�
AFS™ (Advanced Feedback Suppression) Button
This button engages the AFS function of the iEQ-15 and iEQ-31 and clears the AFS filters� If AFS is
off, the filters are bypassed and the algorithm is halted (the filters are not updated)� If AFS is on, the
filters are active� The AFS selections represent the width of the filters and determine how fast AFS
reacts� These AFS selections are as follows:
AFS
Selection
Off AFS processing is disabled�
Faster response time, lower
Music Low
Good combination of response
Music Medium
Slightly slower response time, high
Music High
See the "Operation" section of this manual for further information regarding AFS�
Type V™ NR Button
This button engages the dbx Type V™ noise reduction circuit within the iEQ� Typically, graphic
equalizers will raise the noise floor as the frequency band sliders are adjusted� dbx's proprietary Type V™
noise reduction solves this problem by reducing the apparent noise floor using its simultaneous encode/
decode process (shown below)� The button lights when the dbx Type V™ noise reduction circuit is
activated�
Simultaneous Encode/Decode Control
Audio
Type V™
EQ
Encode
NOTE: dbx Type V™ noise reduction effectively reduces the inherent noise floor within the iEQ�
However, it will not reduce noise introduced into the system from other locations in the signal path�
Frequency Band Sliders
Each one of these slider potentiometers will boost or cut at its noted frequency by ±6dB or ±15dB,
depending upon the position of the RANGE button� When all the sliders are in the center detented
position, the output of the equalizer is flat� The frequency band centers of the iEQ-31 are marked at
1/3rd of an octave intervals on ISO standard spacings, while the frequency band centers of the iEQ-15
are marked at 2/3rds of an octave intervals on ISO standard spacings�
Low Cut Button
The LOW CUT button inserts (when lit) or removes the 18dB/octave 40Hz Bessel low-cut filter from
the signal path� When the LOW CUT button is pushed in, the LOW CUT filter is in the audio path�
Description
fidelity�
time and fidelity�
fidelity�
Audio
Type V™
Decode
Rear / Front Panels
AFS Button LED
Bandwidth
Color
Off
Green 1/10 Octave
Yellow 1/20 Octave
Red 1/80 Octave
iEQ User Manual
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