Mach 1 Acoustics C-300 Service manual
C300
2-way passive loudspeaker
SERVICE MANUAL
2000 MACKIE DESIGNS, INC.
CONTENTS
Click on any item to open that page
Introduction...................................................................... 2
Overview........................................................................... 3
Specifications................................................................... 4
Schematics....................................................................... 5
Parts ................................................................................... 6
INTRODUCTION
SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY
EXPERIENCED REPAIR TECHNICIANS ONLY
This manual contains basic service information. It is essential that you have a copy of the
user’s manual as this contains the complete operating instructions.
SERVICE TECHNICAL ASSISTANCE
Mackie Designs, Service Technical Assistance, is available 8AM - 5PM PST, Monday
through Friday for Authorized Mackie Service Centers, at 1-800-258-6883. Feel free to call
with any questions and speak with a carefully-calibrated technician. If one is not
available, leave a detailed message and a qualified Mackoid will return your call asap.
DISCLAIMER
The information contained in this manual is proprietary to Mackie Designs, Inc. The entire
manual is protected under copyright and may not be reproduced by any means without
express written permission from Mackie Designs, Inc.
2
Overview
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
loudspeaker system, capable of
extremely high sound pressure levels.
The Transducers
The C300 has a 12” high-power lowfrequency woofer and a 1.75” mylar
diaphragm high-output compression
driver. The woofer incorporates
technology used in large-format
touring systems and has a precision 3inch voice coil.
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 midrange and high-frequencies. The result
is an smooth off-axis response.
The Cabinet
The cabinet material is very strong and
is 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. The
asymmetrical trapezoidal design of the
cabinet also makes it easy to use as a
floor wedge for stage monitor
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 (–)
Each driver has been specifically
designed for optimum performance in
a lightweight high-strength cabinet.
The Crossover
This unique Low Impedance
Compensated Crossover (LICC) design
places inductors in series with the
woofer whose values are markedly
lower than conventional 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 nonlinear signals.
3
Loading...