Behringer DSP1424P - Manual (Page 11)

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ULTRAMIZER PRO DSP1424P
Despite this unbelievable processing power the DSP1424P can be intuitively operated with an audio quality
previously unimaginable.
2.1.1 The Ultramizer function
With the Ultramizer function you can increase the loudness and density of the program material. The DSP1424P
analyzes the received music material and adapts the settings automatically. The function of the Ultramizer is
dependent on the the setting of the RANGE parameter. When the RANGE parameter is set relatively high, the
Ultramizer function will perform these two actions:
s The Ultramizer function adjusts the parameters of the compressors to achieve the desired (set) DENSITY in
both bands.
s The total volume is raised to the MAX OUT LEVEL. The total gain is adjusted in a way that the output limiter
will have a slight gain reduction. All relative parameters are continuously monitored to keep the DENSITY at
whatever level you have set.
When the RANGE parameter is set at zero or a small value, the total output will not increase (or only slightly
increase). Only the DENSITY will be increased, resulting in a gain reduction at the output. This setup is
advisable when an increase of gain is unwanted, for instance in live applications where an unexpected
increase in gain can lead to feedback.
ULTRAMIZER DENSITY
After pressing the ULTRAMIZER key once, you have access to the parameter DENSITY. DENSITY is a
combination of parameters governing the perceived density of the signal.
ULTRAMIZER SPEED
After pressing the ULTRAMIZER key a second time, the parameter SPEED can be set. This is the relative
speed with which the parameters of the compressor, limiter and gain at the input will be altered to adapt to the
incoming audio. Choose a low speed when the Ultramizer function must do its job inaudible and high speed
when fast recovery from transients is needed. When low speeds are chosen, the Ultramizer function will adapt
slowly to new incoming signals, although the limiter will still perform as a “brick wall” limiter which will affect
transients.
ULTRAMIZER RANGE
The parameter RANGE, which you access after pressing the ULTRAMIZER key three times, determines the
maximal gain the Ultramizer function will apply to the signal. This way, fade ins and fade outs remain unaf-
fected. It is even possible to set this value to zero so that no amplification is allowed but the density will
increase when a high enough level is applied to the input. When the applied signal reaches the MAX OUT
LEVEL the signal will be compressed and limited by the multiband compresser and the output limiter. This will
prevent distortion while maximizing the loudness, without the risk of feedback caused by an increase in gain
during quiet(er) moments. This function is particularly useful when using the ULTRAMIZER PRO live, where
unexpected gain increase may cause feedback.
2.1.2 The Max. Out Level function
Integrated in the design of the ULTRAMIZER PRO is its limiter function. Key value in almost all functions is the
maximum output level that is set here. This value is a so called “brick wall” that cannot be exceeded under any
circumstances when the ULTRAMIZER PRO is engaged. The level can be set from -48 to 0 dB, with
reference to the internal digital level (“dB” will light up in the display). 0 dB corresponds to +16 dBu. This level
is simply set by the following steps:
1. Set the MAX OUT LEVEL to a low value.
2. Apply a signal to the input of the ULTRAMIZER PRO that is loud enough to be limited constantly.
3. Slowly turn the MAX OUT LEVEL up until the clip LEDs of the connected power amplifier light up occasion-
ally.
After setting the correct MAX OUT LEVEL the preset can be stored to match at any time the same amplifier
and speakers.
You can adjust the MAX. OUT LEVEL parameter in two different ways: The peak and RMS mode. In peak
mode you can adjust a maximum peak value which will not be exceeded. In RMS mode you set an average
maximum level. You can switch between these two modes by pressing the MAX. OUT LEVEL key for about 2
seconds. Additionally, the “RMS” LED in the display will light up.
2. OPERATION