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Mackie SWA1801z Manual Do Utilizador

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Lend Me Your Ears
Exposure to extremely 
high noise levels may 
cause permanent hear-
 ing loss. In di vid u als vary 
 considerably in sus cep ti -
bil i ty to noise-in duced hearing loss, but nearly 
everyone will lose some hearing if ex posed to 
suffi ciently in tense noise for a pe ri od of time. 
The U.S. Gov ern ment’s Oc cu pa tion al Safety and 
Health Ad min is tra tion (OSHA) has spec i fi ed 
the per mis si ble noise lev el 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 dan-
gerous exposure to high sound-pressure levels, 
it is recommend ed that all persons exposed to 
equipment capable of producing these levels use 
hearing protectors while this unit is in opera-
tion. Ear plugs or protectors in the ear canals or 
over the ears must be worn when operating this 
amplifi cation system in  order to prevent a per-
manent hearing loss if exposure is in excess of 
the limits set forth  here. 
Duration Per Day   Sound Level dBA,   Typical
    In Hours 
  Slow Response 
Example
   
8 
 
90 
Duo in small club
   6 
 
92 
 
   4 
 
95 
Subway 
Train
   3 
 
97
 
 
2 
 
100 
Very loud classical music
 
     1.5 
 
102
 
 
1 
 
105 
Patrice screaming at Ron about dead lines
   0.5 
 
 
110
 
 0.25 or less 
 
115 
Loudest parts at a rock con cert
The SWA1801z 
can pro duce a 
max i mum SPL of 
135 dB @ 1m
INTRODUCTION
Thank you for choosing Mackie’s ac tive 
sound reinforcement speaker sys tems.
The SWA1801z is a high-output active sub-
woofer system. It features a high-pre ci sion 18" 
transducer combined with application-spe cifi  c 
amplifi er technology. The system is com posed of 
a single, com pact subwoofer cab i net with built-in 
control and am pli fi  er elec tron ics.
Connecting and setting up the SWA1801z is 
a breeze. It accepts a stereo or mono line-level 
sig nal via fe male XLR input jacks. Male XLR 
Thru jacks are provided for daisy-chain ing the 
signal to ad di tion al SWA1801z cabinets. The 
built-in cross over separates the low fre quen cies 
from the high fre quen cies, and routes the high 
fre quen cies to the male XLR high-pass output 
jacks. Connect these to the in puts of full-range 
active speak ers such as the Mackie SA1521z, 
or to an amplifi er pow er ing a pair of pas sive 
speak ers such as a combination of the Mackie 
M•1400i and C300z. A Phase switch gives you the 
option of reversing the po lar i ty of the sig nal to the 
subwoofer by 180º. A Subwoofer Level con trol 
al lows you to adjust the bal ance be tween the sub-
woofer and the full-range speak ers.
The built-in amplifi er produces 800 watts of 
con tin u ous power. The amplifi er module sits on 
a heatsink that elim i nat es the need for fans, 
dra mat i cal ly ex tend ing life ex pect an cy, and 
elim i nat ing main te nance cycles. A tre men dous 
ben e fi t of hav ing the amplifi er located with in the 
subwoofer cab i net is that the SWA1801z func tions 
as a sys tem, op ti miz ing acous tic, elec tron ic, and 
me chan i cal de signs to achieve the high est level of 
per for mance and val ue.
The cabinet is constructed with 15 mm thick 
multi-layered birch plywood. Carrying han dles are 
in te grat ed into each side for easy loading, and cast-
 ers are attached to the rear for easy trans port.
CONTENTS
Don’t forget to visit our website at 
for more information about this and oth er Mackie products.
R
Part No. 0017284  Rev. A  9/05 
 
 
 
 
©2005 LOUD Technologies Inc.  All Rights Reserved.