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6
CONNECTIONS
The SWA1801z has two female XLR in-
puts that accept a balanced line-level sig nal.
When con nect ing a bal anced sig nal, be sure
it’s wired per AES (Au dio En gi neer ing
So ci ety) 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
sig nal high (hot) connection is wired to Pin
2 and the unbalanced ground con nec tion
is wired to the low and the ground con nec -
tions of the balanced input (Pins 3 and 1).
If there are ground-loop problems, try con-
nect ing the unbalanced ground connection
only to the input low connection (Pin 3),
and leaving the input ground connection
dis con nect ed.
There are also four male XLR con nec tors
la beled
THRU (FULL RANGE OUTPUT)
and
HIGH PASS (MID/HIGH FREQ) OUT PUT
.
These are also wired ac cord ing to the
AES stan dard.
The
THRU
output connectors allow you
to con nect more than one SWA1801z to
your sys tem. Sim ply plug the signal source
(i.e., mixer output) into the fi rst speaker’s
FULL RANGE IN PUT
jacks, and patch that
speak er’s
THRU
jacks to the next speak er’s
IN PUT
jacks, and so on, dai sy-chain ing mul-
ti ple speak ers.
The
THRU
jack is wired straight from the
FULL RANGE INPUT
con nec tor — there is no
elec tron ic cir cuit ry be tween — so the sig nal
com ing out of the
THRU
jack is ex act ly the
same as the sig nal go ing in.
The
HIGH PASS OUTPUT
jacks pro vide
a line-lev el signal of the fre quen cies above
120Hz that you connect to a pair of active
speak ers (or to a stereo am pli fi er pow er ing
a pair of pas sive speakers).
PLACEMENT
The SWA1801z subwoofer is de signed
to sit on the fl oor. A socket is provided on
the top of the SWA1801z for mounting
the Mackie SA1521z or SRM450 ac tive
speak ers. Use the op tion al Mackie speaker
mount ing pole (SPM100) to mount them
on the SWA1801z (see Hook up Di a gram on
page 5).
As with any powered
com po nents, pro tect the
SWA1801z from ex po sure
to mois ture. If you are
set ting them up out doors,
make sure they are under
cov er if you ex pect rain.
WARNING: The cab i net
has no rigging points and
is not suit able for rig ging.
NEV ER at tempt to sus-
pend the SWA1801z by
its handles.
Unbalanced Male XLR Connector