3
Part No. 820-188-00 Rev. A 7/99
©1999 Mackie Designs Inc. All Rights Reserved.
INTRODUCTION
The Crossover
This unique Low Impedance Compen-
sated Crossover (LICC) design places
inductors in series with the woofer whose
values are markedly lower than conven-
tional designs. This reduces the amount of
energy that is typically wasted as heat and
increases the amount of energy that is
transformed into real acoustic power. It also
incorporates dynamic protection for the
compression driver from non-linear signals.
The Cabinet
The C300 cabinet was designed to be the
strongest molded composite cabinet on the
planet. This material is as strong as con-
crete, and rigid enough to prevent
unwanted vibrations and standing waves in
the cabinet. It has built-in fly points for
hanging, and a socket in the bottom for
mounting on a tripod stand. Although it is
an exceptional choice for installed sound
situations, its light weight and durable fin-
ish also make it ideal for portable sound
system use. The asymmetrical trapezoidal
design of the cabinet also makes it easy to
use as a floor wedge for stage monitor appli-
cations.
The C300 offers a portable, lightweight
solution for a variety of high-powered
sound reinforcement applications.
Inputs
The C300 input is a Speakon connector,
wired as follows:
Pin 1+ is Positive (+)
Pin 1– is Negative (–)
(Pins 2– and 2+ are not used)
The C300i input is 1/4” TS (tip-sleeve),
wired as follows:
The Tip is Positive (+)
The Sleeve is Negative (–)
Having these inputs on the C300i
speakers makes them an ideal choice for
use with one of our PPM-series profes-
sional powered mixers.
Thank you for choosing Mackie Designs’
sound reinforcement speakers.
The C300 has a Speakon® input, and the
C300i has a 1/4 inch phone jack. Apart
from this difference, all details in this
manual apply to both models.
The C300 is a portable two-way loud-
speaker system, capable of extremely high
sound pressure levels, and designed to give
you the best performance of any loudspeaker
in its class and price range.
Mackie Designs’ entry into the sound
reinforcement loudspeaker market began
with the acquisition of Radio Cine Forniture
(RCF), headquartered in Reggio Emilia,
Italy. RCF has a long tradition in develop-
ing speaker technology for the high-end
pro-audio market.
The Transducers
The C300 features a 12” high-power
low-frequency woofer and a 1.75” mylar
diaphragm high-output compression driver.
The woofer incorporates technology used
in large-format touring systems and, with a
massive, precision 3-inch voice coil, is virtu-
ally indestructible.
The high-frequency compression driver
is mounted on a multi-cell aperture loaded
on a constant directivity horn, providing an
ultra-wide, controlled dispersion pattern and
precise reproduction of the critical upper
mid-range and high-frequencies. The result
is an unbelievably smooth off-axis response
that allows everyone in the audience to ex-
perience the same high-resolution audio no
matter where they are seated.
Each driver has been specifically designed
by our engineers for optimum performance
in a lightweight high-strength cabinet.
