Mackie C300 Service Manual Download Page 3

3

Overview

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 (–)

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 low-
frequency 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 3-
inch 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 mid-
range and high-frequencies. The result
is an smooth off-axis response.

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 non-
linear signals.

Summary of Contents for C300

Page 1: ...C300 2 way passive loudspeaker SERVICE MANUAL 2000 MACKIE DESIGNS INC...

Page 2: ...ions 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 m...

Page 3: ...ransducers The C300 has 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 has a...

Page 4: ...t 55Hz Maximum SPL 1m 126 dB Low Frequency Crossover Type 24 dB octave time offset corrected High Frequency Crossover Type 24 dB octave Crossover Frequency 1800Hz Driver Protection Dynamic protection...

Page 5: ...R8 L3 SE034414 C300 MACKIE12P FILTER ELECTRIC DIAGRAM 1 1 1 1 1 IN IN 3 1 IN ELECTRIC DIAGRAM FOR PROTECTION AND INPUT ASSEMBLY C300 JACK AND SPEAK ON CONNECTORS EXTERNAL POWER SUPPLY FOR AT THE FILT...

Page 6: ...NDLE 33939 2 33910170 KNOB 33934 1 33910250 SOUND ABSORBING STUFF 34373 1 33910260 WASHER FOR PCB 34599 4 33920240 SPACER FOR HANDLE 33832 4 33920300 NUT 33713 8 33920510 NUT 34202 2 33921480 INSERT 3...

Page 7: ...82112001 C2D12 750 151 DIODE 1N4148 1 DIODE 82122015 C2D22 101 402 DIODE MUR410 4 DIODE 82131050 C2D31 501J120 ZENER 0 5W 12V 1 ZENER DIODE 12V 82262014 C2T62 313A101 MOSFET IRFP140 1 MOSFET IRFP140...

Page 8: ...5016 1 33100140 REAR PANEL 35016 1 NOTE The C 300 speaker is the same as the C300i except for the following parts NOTE The C300 PCB INPUT BOARD 23020520 uses the SPEAKON connector not the 1 4 stereo j...

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