PRV Audio DSP 2.8X, User Manual

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8 9
In the
“CROSSOVER”
menu, each short press on the
ENCODER
changes the parameter
being edited, between output, filter type, frequency and attenuation/topology.
To select another output channel for editing, short press the
HOTKEY
key on the
corresponding output.
frequency cancellations.
The adjustment can be carried out as
follows:
• Crossover
This function allows precision definition of the cutoff frequencies for the high-
pass filter and the low-pass filter, as well as filter attenuations and topology
individually by output. The available filters and attenuations are:
• Balance / Delay
This function allows for the digital alignment of transducers (speakers) via the
time correction performed by the DSP, and ensures that the sound from all
the speakers arrives at the listener with improved audio fidelity while avoiding
HPF: Butterworth 12/18/24/36/48 dB/8ª
Linkwitz-Riley 12/18/24/36/48 dB/8ª
LPF: Butterworth 12/18/24/36 dB/8ª
Linkwitz-Riley 12/18/24/36 dB/8ª
HPF OUT
f:12 Hz LR48
LPF OUT1
f:107 Hz BT12
DALAY OUT1
12.0cm 0.349ms
Case Front
Panel
Reference (*)
1.
Identify the coil farthest from the
listener or the front panel of the box.
This coil will be used as a reference;
2.
Measure the distance from the other coils to
the reference coil. These are the distances used in
configuring the delay of each output channel.
the “Encoder” dial changes the phase (0°
ou 180°) of the corresponding output. To
select another channel, quickly press the
corresponding
HOTKEY
shortcut.
• Phase
This function is used for resolving problems caused by canceling frequencies.
From this screen you can reverse the phase of all outputs individually. Turning
• Limiter
To protect your amplifiers and speakers, the
DSP2.8X
has a limiter with an integrated
“Dynamic Attack-Release”
system for each of the 4 outputs. Use this function to
attenuate and prevent damage to the system caused by signal peaks.
The Threshold (-24 to 0dB) setting defines a threshold for the Limiter’s activation:
the Limiter kicks in when this threshold is exceeded.
The Attack parameter (0.1 to 100 ms) defines how fast the Limiter reacts / acts when
the signal exceeds the Threshold.
The Release parameter (1 to 1600 ms) controls the recovery time elapsed between
the time the signal falls below the Threshold and deactivation of the Limiter.
PHASE
OUT1:180
LIMITER
THRES.: -9.5 dB
LIMITER
ATTACK: 0.1 ms
LIMITER
RELEASE: 500 ms
LIMITER OUT1
AUTO: OFF [ON]
• OUTPUT GAIN
This menu allows you to adjust the gains of the
individual outputs within a range of -45 to +15 dB, as
well as to increase the master volume from 0 to 100%.
In addition to manual adjustments
of Attack and Release values, it
is possible to enable the “AUTO”
mode, where the Attack and
Release parameters are controlled
in real time by the
“Dynamic Attack-
Release”
system, providing ideal
conditions for sound fidelity
MASTER LVL: 82%
OUT1 GAIN: +3dB