6
CONNECTIONS
The SWA1501 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
SWA1501 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 SWA1501 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). See the diagrams on the rear panel of
the SWA1501 for additional connection informa-
tion.
PLACEMENT
The SWA1501 subwoofer is designed to sit on
the floor or on sturdy stands.
A socket is provided on the top of the SWA1501
for mounting the Mackie SRM450 active speaker.
Use the optional Mackie speaker mounting pole
to mount the SRM450 on the SWA1501 (see
Hookup Diagram on page 5).
As with any powered compo-
nents, protect the SWA1501s
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 suspend the
SWA1501 by its handles.
Unbalanced Male XLR Connector
