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6
CONNECTIONS
The SWA1801z has two female XLR inputs that
accept a balanced line-level signal. When connect-
ing 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
SWA1801z 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 connections of the balanced
input (Pins 3 and 1).
If there are ground-loop
problems, try connecting the unbalanced ground
connection only to the input low connection (Pin
3), and leaving the input ground connection dis-
connected.
There are also four male XLR connectors la-
beled
THRU (FULL RANGE OUTPUT)
and
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 SWA1801z 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 multiple 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 SWA1801z subwoofer is designed to sit on
the floor. A socket is provided on the top of the
SWA1801z for mounting the Mackie SA1521z or
SRM450 active speakers. Use the optional Mackie
speaker mounting pole (SPM100) to mount them
on the SWA1801z (see Hookup Diagram on page
5).
As with any powered components, protect the
SWA1801z from exposure to moisture. If you are
setting them up outdoors, make sure they are un-
der cover if you expect rain.
WARNING: The cabinet
has no rigging points and
is not suitable for rigging.
NEVER attempt to sus-
pend the SWA1801z by its
handles.
Unbalanced Male XLR Connector