Lab.gruppen PLM Series Quick Start Guide

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Quick Start Tutorial
PLM Series Quick Start and Field Reference Guide Rev 1.3.5
6.5.5 Attenuator
An attenuator gain adjustment is provided for each power output channel in the PLM (-inf to 0 dB. This
control replaces the traditional volume control found on conventional ampliers and should typically be left at
0 dB during use.
6.5.6 Amp Gain
The Amp Gain corresponds to the gain adjustment in a conventional separate loudspeaker processor and
amplier system. When using a pre-dened Module loudspeaker preset le, the Amp Gain settings will
normally remain as dened in the le. The limiter and output gain settings of the Module were congured
with this gain setting and will not be automatically compensated if changes are made.
6.6 Gain / Level Optimization
6.6.1 Maximize Volume Capability
To maximize the volume capability of the device, ensure there is sufcient headroom in the signal path to
avoid clipping before the limiters engage. It must be possible to achieve enough gain through the device to
engage the limiters and realize a high average SPL. As an optimal setting, allow for a headroom of 10 dB or
more for all channels; the simplest way to accomplish this is to increase the Module input gain.
6.6.2 Minimize Noise
To help provide the best volume to noise ratio, use an AES or Dante digital input signal wherever possible. If
using analog inputs, ensure that unused or unnecessarily high headroom is not introduced at the input to the
device. If full or high average power is not required, the Module input gain may be reduced.

Lab.gruppen PLM Series Specifications

General

DSP	Yes
Network	Ethernet
Connectors	XLR, SpeakON
Cooling	Forced air
Protection Features	Overheat, DC, short circuit
Control Software	Lake Controller