System Overview; The Sr40•8 In A Nutshell; Matrix - Mackie SR40-8 Service Manual

SYSTEM OVERVIEW

THE SR40•8 IN A NUTSHELL
This section provides a quick summary of the SR40•8's major features. It is not intended
to take the place of the owner's manual. It is included here to help servicing
technicians familiarize themselves with the SR40•8.
MIXING
Channel controls manipulate mic/line signals in this order: phantom power, trim,
polarity, low cut filter, insert, EQ, mute, fader, pan, and assignment switches. These
signals are then assigned to the left, right and/or center mix, or to one of the eight
subgroups.
The main mix (left, right and center) typically feeds the main sound system. The left/right
mix can be controlled by individual faders or switched to share one fader. Subs 1-8 can
be assigned to the left/right or center mix, enabling them to be used as master faders
for submixes of channels. Alternatively, the subs can be used for secondary speaker
systems. More output routing options involve the matrix, discussed below.

MATRIX

The SR40•8 has 11 primary mix buses: left, right, center, and 8 subs. Via the channel's
assignment switching, signals can be distributed among these buses. If a situation
demands a unique destination for each mix, the dedicated outputs for each of these
mixes will suffice.
More likely, a situation will demand that these 11 mixes be recombined in some way, to
feed off-site systems, delay towers, assistive listening systems, or special mixes for
recording or broadcast. Enter the Matrix.
The matrix is simply four separate 12 x 1 mixers. Its inputs include: left, right, center, subs
1-8 and an external input at the patch panel. Each matrix strip has a level control for
each of the eleven internal inputs as well as master level, solo and mute controls.
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