Extron Electronics PVS 204SA User Guide - Manual (Page 31)

3-5 PVS 204SA Switcher • Operation and Setup
PRELIMINAR
Y
Setting Up and Optimizing the Audio
The following steps ensure optimal sound is achieved by configuring the
PVS 204SA properly. For each step, refer to the sections indicated for more
information.
Steps for optimizing the audio
1 . Ensure all the settings are at default. These are the settings the PVS has upon
initial power up. The default settings are as shown below.
• Volume is set at 50%.
• Bass and treble are set at 0.
• Power Amplifier level is set to 50% (default level is 0 dB).
• Loudness control is set to Off.
N Amplifier level and volume level are not the same adjustments. Volume can
only be adjusted by RS-232 or with a potentiometer connected to the rear panel
port labeled “DC Vol”. Amplifier level is adjusted via the front panel encoder.
2 . Ensure that the PVT transmitters are connected to the PVS and that there
is an audio input source present at each of the transmitters. Refer to the
transmitters’ user’s manual for installation/connection information.
3 . Ensure a set of speakers are connected to the PVS 204SA. See chapter 2,
“Installation”, “Speaker Configuration” section, for details.
4 . Slowly adjust the volume to 100% via RS-232, by having the MLC increase
the volume, or by a potentiometer connected to the DC Volume port on the
rear panel. If an MLC 104 IP Plus is connected to the PVS, simply rotate the
volume knob clockwise until it is at full volume.
5 . Adjust the input sensitivity for one input through the front panel or by
RS-232 to a level just below where audio input is clipped. See the sections
“Individual channel input sensitivity control” and “Clipping indicator”, later
in this chapter, for details. Repeat for all four inputs.
N Adjusting input sensitivity for all inputs ensures that all inputs are at the same
level, and at the highest level possible before clipping occurs. Step 5 ensures that
when the volume is at 100%, the audio signal will not clip.
6 . When adjustments to all four inputs’ sensitivity settings have been made,
adjust the amplifier level. Increase or decrease the amplifier level very slowly
by turning the front panel level encoder counterclockwise until the desired
level is reached.
N If the volume is at 100% through the MLC and the output on the speakers is too
loud, reducing the amp level using the front panel encoder is recommended. This
ensures that the volume will not be too loud, even when set at 100%.
7 . Fine tune the audio by making adjustments to the bass, treble, and loudness
until the desired settings are reached. See “Bass, treble, and loudness
control”, later in this chapter.