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Lend Me Your Ears
Exposure to extremely high
noise levels may cause perma-
nent hearing loss. Individuals
vary considerably in suscepti-
bility to noise-induced hearing
loss, but nearly everyone will lose some hearing if
exposed to sufficiently intense noise for a period of
time. The U.S. Government’s Occupational Safety and
Health Administration (OSHA) has specified the per-
missible noise level exposures shown in this chart.
According to OSHA, any exposure in excess of
these permissible limits could result in some hearing
loss. To ensure against potentially dangerous exposure
to high sound-pressure levels, it is recommend ed that
all persons exposed to equipment capable of produc-
ing these levels use hearing protectors while this unit
is in operation. Ear plugs or protectors in the ear ca-
nals or over the ears must be worn when operating this
amplification system in order to prevent a permanent
hearing loss if exposure is in excess of the limits set
forth here.
The SWA1801z
can produce a maximum
SPL of 135 dB @ 1m
INTRODUCTION
Thank you for choosing Mackie’s active sound re-
inforcement speaker systems.
The SWA1801z is a high-output active subwoofer
system. It features a high-precision 18" transducer
combined with application-specific amplifier tech-
nology. The system is composed of a single, compact
subwoofer cabinet with built-in control and amplifier
electronics.
Connecting and setting up the SWA1801z is a
breeze. It accepts a stereo or mono line-level signal
via female XLR input jacks. Male XLR Thru jacks are
provided for daisy-chaining the signal to additional
SWA1801z cabinets. The built-in crossover separates
the low frequencies from the high frequencies, and
routes the high frequencies to the male XLR high-pass
output jacks. Connect these to the inputs of full-range
active speakers such as the Mackie SA1521z, or to an
amplifier powering a pair of passive speakers such as a
combination of the Mackie M•1400i and C300z. A Phase
switch gives you the option of reversing the polarity of
the signal to the subwoofer by 180º. A Subwoofer Level
control allows you to adjust the balance between the sub-
woofer and the full-range speakers.
The built-in amplifier produces 800 watts of continu-
ous power. The amplifier module sits on a heatsink that
eliminates the need for fans, dramatically extending
life expectancy, and eliminating maintenance cycles. A
tremendous benefit of having the amplifier located within
the subwoofer cabinet is that the SWA1801z functions as a
system, optimizing acoustic, electronic, and mechanical
designs to achieve the highest level of performance and
value.
The cabinet is constructed with 15 mm thick multi-
layered birch plywood. Carrying handles are integrated
into each side for easy loading, and casters are attached
to the rear for easy transport.
CONTENTS
Lend Me Your Ears ...........................................................3
INTRODUCTION ...............................................................3
REAR PANEL DESCRIPTION ...........................................4
HOOKUP DIAGRAMS ......................................................5
CONNECTIONS ................................................................ 6
PLACEMENT .....................................................................6
AC POWER ......................................................................7
THERMAL CONSIDERATIONS ........................................7
SERVICE INFORMATION ................................................. 7
Troubleshooting ........................................................7
Repair ........................................................................9
SWA1801z SPECIFICATIONS .......................................10
SWA1801z LIMITED WARRANTY..................................11
Don’t forget to visit our website at www.mackie.com
for more information about this and other Mackie products.
R
Duration, per
day in hours
Sound Level dBA,
Slow Response
Typical Example
8 90 Duo in small club
6 92
4 95 Subway Train
3 97
2 100 Veryloudclassicalmusic
1.5 102
1 105 Fooyoung screaming at desTROYer about deadlines
0.5 110
0.25 or less 115 Loudest parts at a rock concert
Part No. SW0619 Rev. C 03/12
©2005-2012 LOUD Technologies Inc. All Rights Reserved.