Level controls
The front panel level controls should be turned down (fully counter clockwise) until
FOH-to-Amp rack lines have been checked and controllers have been set to suit the
power amplifiers to be used (see Section A2.5.1). Music should be used to check that
controllers are receiving and sending the appropriate signal bands and then each
power amplifier level control advanced in sequence to check system operation and
patching.
Assuming that controllers have been set as tabulated in Section A2.5.1, power
amplifier level controls should be set to full (fully clockwise) for loudspeaker sections
requiring the strongest drive. Amplifiers driving nearer-field section within the same
cluster may be backed off as required for smooth coverage. This process will ensure
that the cluster coverage remains balanced during limiting.
Rack mounting
As with main W8 systems, always leave a 1U space between big subwoofer power
amplifiers and controllers. Although most modern amplifiers don’t radiate significant
fields it's better to play safe and keep the system free from hum & buzz. Rear
supports are recommended. Check the manufacturer's application notes for details.
A2.6.1 Martin Audio MA4.2 Overview
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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