Gain / Level Optimization; Digital Audio Connections - Lab.gruppen Lake LM 26 Operation Manual

Digital audio loudspeaker processor

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1. Factory Gain is set by the system designer and can be hidden within the Module file. The Factory

Gain parameter is only accessible when the Module is unlocked and the Lake Controller is in

Designer Mode. Adjust via MODULES > LEVELS > METER OPTIONS > ADJUST FACTORY.

2. User Gain is editable by a user unless the system designer has locked away the parameter; adjust

via MODULES > LEVELS.

Generally, output gain values are configured within a Module / loudspeaker preset file and should not need

to be adjusted further.

9.2

Gain / Level Optimization

9.2.1

Maximize Volume Capability

To maximize the volume capability of the device, ensure there is sufficient 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.

9.2.2

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.

9.3

Whenever possible, it is preferable to connect a digital rather that analog input signal to the device. This is

particularly relevant if the source signal is already in the digital domain, such as the source from a digital

mixing console or digital distribution system. The primary cause of signal distortion and signal delay (latency)

is the digital-to-analog and analog-to-digital conversion process. Therefore, using digital inputs normally

provides higher quality audio with lower latency.

Two types of digital audio inputs are available: Dante networked multi-channel digital audio, and two-channel

digital audio via the AES3. Dante-based system configurations and interconnections are explained in a

separate document, the Lake Network Configuration Guide.

The information in this section is supplied for users unfamiliar with AES3. Users already familiar with AES3

will find that the device conforms to established conventions.

Application Guide

LM 26 Operation Manual rev 1.1.8

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