High Efficiency Subwoofer Speaker System
PA180SW
SPEAKER
PA180SW
oF 6 PAGES
4
O F 4 P A G E S
Architects’ and Engineers’ Specifications
The subwoofer loudspeaker system shall be self-con-
tained and consist of the following components: (1) an 18-
inch, low-frequency driver; (2) a low-pass filter; (3) a vented,
horn loaded enclosure.
The low-frequency transducer shall be a cone type loud-
speaker having a cone diameter of at least 18 inches
(460mm). It shall have a voice coil of at least 4 inches
(100mm) in diameter. It shall present a nominal impedance
load of 8
Ω
. Sensitivity shall be at least 100dB when meas-
ured at 1m with an input of 1 Watt and have a power rating of
at least 500 Watts (AES), 2000 Watts Peak.
The system shall be crossed over by an internal, high-
level, passive network having a response of 12dB/octave.
The nominal crossover frequency shall be 120Hz. The low-
pass section of the network shall have minimum inductance
in series with the low-frequency driver. The high-pass section
of the network shall roll-off signals below 120Hz at
12dB/octave. This high-pass signal shall be made available
to drive a full range loudspeaker system. A dynamic low-fre-
quency protection circuit shall limit the current available to
the driver. The crossover network shall present a constant
8
Ω
load impedance to the power amplifier. A jumper shall be
provided to disconnect the crossover network from the driver
to allow bi-amp operation. Connections to the loudspeaker
shall be Speakon
®
NL4 connectors.
The enclosure shall be a vented horn-loaded design with
an internal volume of at least 8.38 cu. ft. The vent shall be
tuned to 35Hz. It shall be constructed using 0.75 inch
(19mm), void-free birch plywood and finished with black,
scratch-resistant paint. It shall be rectangular shaped. A full
size, detachable, perforated steel grille, finished in black
scratch-resistant paint and lined with foam damping material
shall be provided. At least 12 reinforced threaded metal sock-
ets (M10) for attaching mounting hardware, three eye bolts
and two hand holds shall also be provided. The overall
dimensions of the enclosure shall not exceed 23.5 x 31.34 x
23.74 inches (596mm x 796mm x 603mm).
The performance of the subwoofer loud-speaker system
shall be as follows: long-term power handling, at least 500
Watts RMS; peak power handling, at least 2000 Watts; fre-
quency response, 50Hz–160Hz at –3dB; maximum SPL,
133dB (anechoic–1m); sensitivity, 100dB SPL (1W/1m ane-
choic). The subwoofer loudspeaker system shall be a model
PA180SW manufactured by Mackie Industrial.
www.mackieindustrial.com
16220 Wood-Red Rd. NE, Woodinville, WA 98072 USA
888.337.7404, fax 425.487.4337, [email protected]
UK
+44.1268.571.212, fax +44.1268.570.809, [email protected]
ITALY
+39.0522.354.111, fax +39.0522.926.208, [email protected]
FRANCE
+33.3.8546.9160, fax +33.3.8546.9161, [email protected]
GERMANY
+49.2572.96042.0, fax +49.2572.96042.10, [email protected]
Electronic files for this product available at:
www.mackieindustrial.com
This Specification Sheet
PA180SW.PDF
Mackie Designs continually engages in research related to product improvement. New material, produc-
tion methods, and design refinements are introduced into existing products without notice as a routine
expression of that philosophy. For this reason, any current Mackie Industrial product may differ in some
respect from its published description, but will always equal or exceed the original design specifications
unless otherwise stated. ©1999-2001 Mackie Designs Inc. All rights Reserved. and are
registered trademarks of Mackie Designs Inc. Mackie Industrial is a trademark of Mackie Designs Inc.
part no. 910-154-10 Rev.B