Lab.gruppen PLM Series Quick Start Manual - 6. Quick Start Tutorial
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PLM Series Quick Start and Field Reference Guide rev 1.0.6
6. Quick Start Tutorial
Analog Iso-Float & AES Termination: Inputs 1-2: Floating; AES: terminated.
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If any of the settings differ from the above, please refer to the Dolby Lake Controller User Manual PLM
24.
Edition Addendum for guidance on changing them.
The next step is setting the PLM’s gain structure
25.
. In a real situation, the loudspeaker manufacturer’s
data should be consulted for information regarding the relative drive levels, crossover specifications and
limiter settings for the LF, MF, HF and sub channels. Alternatively, a Lab.gruppen LoadLibrary file would
have been used that would already contain the necessary data to configure gain, crossover and limiter
settings. The default settings for the Lake Processing Module inputs and outputs are 0 dB, and for the
amplifier gain, 35 dB. We will assume that these settings are satisfactory for this illustration.
From the
I/O Config screen, tap the Lab.gruppen Info button on the menu bar
. The PLM Series Module Status
tab should open. If a different tab opens (the last accessed always opens),
tap the Status tab
to switch
to it.
The four fader strips displayed represent the four power output channels, as connected to the four Module
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outputs in use. In accordance with the settings made in Output Configurations in Step 22, the four strips
represent Low, Mid, High and Aux respectively. The four faders are the amplifier attenuation controls. As
a precaution,
move them all to the minimum position. Close the page with the Return button.
Tap on the Input Gain block
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in Module A’s pane. The left-most of the five faders now shown on-screen
is the Module input gain; the others are the Module output gains. For the purposes of our hypothetical
loudspeaker,
set the Mid fader 6 dB below the Low fader and the High fader 12 dB below the Low
fader.
The Module input is still muted.
Un-mute it by tapping the Input Mute button
(it turns blue).
Feed the PLM with audio
by slowly opening fader(s) on the mixing desk. The bargraph meters on-screen
should indicate signals.
Adjust the Module Input gain
if necessary to obtain an appropriate signal level
on the output bargraphs.
Close the page by tapping EQ/Levels EXIT
on the menu bar. The I/O Config
screen will be displayed again.
Tap the Lab.gruppen Info button
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on the menu bar to return to the PLM Series Module Status tab. Now
we can
increase the levels on attenuation faders carefully
in order to drive signal into the output load.
Audio should now be heard.