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6
CONNECTIONS
The SWA2801z has two female XLR inputs
that accept a balanced line-level signal. When
connecting a balanced signal, be sure
it’s
wired per AES (Audio Engineering Society)
standards:
XLR
Hot (+) Pin 2
Cold (–) Pin 3
Shield (Ground) Pin 1
Balanced XLR Connectors
If connecting an unbalanced signal to the
SWA2801z balanced input, be sure that the
signal high (hot) connection is wired to Pin
2 and the unbalanced ground connection
is wired to the low and the ground connec-
tions of the balanced input (Pins 3 and 1).
If there are ground-loop problems, try con-
necting the unbalanced ground connection
only to the input low connection (Pin 3),
and leaving the input ground connection
disconnected.
There are also two male XLR connectors
labeled
THRU (FULL RANGE OUTPUT)
and
two labeled
HIGH PASS (MID/HIGH FREQ)
OUTPUT
. These are also wired according
to the AES standard.
The
THRU
output connectors allow you
to connect more than one SWA2801z to
your system. Simply plug the signal source
(i.e., mixer output) into the first speaker’s
FULL RANGE INPUT
jacks, and patch that
speaker’s
THRU
jacks to the next speaker’s
INPUT
jacks, and so on, daisy-chaining mul-
tiple speakers.
The
THRU
jack is wired straight from the
FULL RANGE INPUT
connector — there is no
electronic circuitry between — so the signal
coming out of the
THRU
jack is exactly the
same as the signal going in.
The
HIGH PASS OUTPUT
jacks provide
a line-level signal of the frequencies above
120Hz that you connect to a pair of active
speakers (or to a stereo amplifier powering
a pair of passive speakers).
PLACEMENT
The SWA2801z subwoofer is designed to
sit on the floor, either upright or on its side.
(Feet are provided on the bottom and on
one side.) A socket is provided on the top
and one side of the SWA2801z for mount
-
ing the Mackie SA1521z or SRM450 active
speakers. Use the optional Mackie speaker
mounting pole (SPM100) to mount them
on the SWA2801z (see Hookup Diagram on
page 5).
As with any powered
components, protect the
SWA2801z from exposure
to moisture. If you are
setting them up outdoors,
make sure they are under
cover if you expect rain.
WARNING: The cabinet
has no rigging points and
is not suitable for rigging.
NEVER attempt to sus-
pend the SWA2801z by
its handles.
Unbalanced Male XLR Connector