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PACX81
Coaxial, Two-Way Speaker System
Architects' and Engineers' Specifications
The two-way loudspeaker system shall be self-contained
and consist of the following components: (1) an 8 inch, two-
way coaxial loudspeaker; (2) a two-way crossover network;
(3) a vented enclosure.
The low-frequency section of the transducer shall be a
cone type loudspeaker having a cone diameter of at least 8
inches (200mm). It shall have a voice coil of at least 2 inches
(50mm) in diameter. It shall present a nominal impedance
load of 8Ω.
The high-frequency section of the transducer shall be a
dome tweeter. It shall have a titanium voice coil of at least 1
inch (25mm) in diameter. It shall present a constant-imped-
ance load of 8Ω.
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 1.3kHz. The low-
pass section of the network shall have minimum inductance
in series with the low frequency driver component. A dynamic
high-frequency protection circuit based on a low-value, low
mass filament resistor shall limit the current available to the
high-frequency driver component. A switch shall be provided
to disconnect the crossover network, but not the high-fre-
quency protection circuit, from the drivers to allow bi-amp
operation.
The enclosure shall be a vented design with an internal
volume of at least 0.53 cu. ft. The vent shall be tuned to
60Hz. It shall be constructed using 0.75 inch (19mm), void-
free birch plywood and finished with black, scratch resistant
paint. A model finished in white scratch-resistant paint shall
be available from the manufacturer. It shall be an asymmetri-
cally shaped trapezoid to facilitate various monitor and
mounting configurations. A full size, detachable, perforated
steel grille, finished in black scratch-resistant paint shall
be provided. At least 8 reinforced threaded metal sockets
(M10 & M8) for attaching mounting hardware shall also be
provided. The overall dimensions of the enclosure shall not
exceed 15 x 11.81 x 10.63 inches (381mm x 300mm x
270mm). Connections to the loudspeaker shall be
®
Speakon
NL4 connectors.
www.mackieindustrial.com
16220 Wood-Red Rd. NE, Woodinville, WA 98072 USA
888.337.7404, fax 425.487.4337, industrial@mackie.com
UK
+44.1268.571.212, fax +44.1268.570.809, info@rcf-uk.com
+39.0522.354.111, fax +39.0522.926.208, industrial@rcf.it
ITALY
FRANCE
+33.3.8546.9160, fax +33.3.8546.9161, rcf.commercial@wanadoo.fr
GERMANY
+49.2572.96042.0, fax +49.2572.96042.10, industrial@mackie.de
(continued Architects' & Engineers' Specs)
The performance of the two-way loudspeaker system shall
be as follows: long-term power handling, at least 150 Watts
RMS; peak power handling, at least 600 Watts; frequency
response, 100Hz–17kHz at –3dB; maximum SPL, 120dB
(anechoic–1m); sensitivity, 92dB SPL (1W/1m anechoic);
–6dB coverage, measured average 800Hz–16kHz, 110° hori-
zontal by 110° vertical. The two-way loudspeaker system
shall be a model PACX81 (PACX81W, white) manufactured by
Mackie Industrial.
Electronic files for this product available at:
www.mackieindustrial.com
This Specification Sheet
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.
registered trademarks of Mackie Designs Inc. Mackie Industrial is a trademark of Mackie Designs Inc.
PACX81.PDF
and
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part no. 910-147/148-10 Rev.B
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