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MA Series Power Amplifiers
Operation Manual
1 Welcome
Congratulations on purchasing one of the
renowned Crown
®
Macro-Tech
®
power
amplifiers. They are designed to provide enor-
mous levels of pure, undistorted power in a
rugged, low-profile package — making them
the choice for pro sound reinforcement. They
ultilize our patented ODEP
®
protection circuitry
to keep the show going long after other amplifi-
ers have shut down. And with their PIP
™
expandability, Macro-Tech amplifiers can be
easily customized with one of our many
optional input modules (see Section 5 for a list
of available PIPs).
Modern power amplifiers are sophisticated
pieces of engineering capable of producing
extremely high power levels. They must be
treated with respect and correctly installed if
they are to provide the many years of reliable
service for which they were designed.
In addition, the Macro-Tech 02 Series amplifi-
ers include a number of features which require
some explanation before they can be used to
their maximum advantage.
Please take the time to study this manual so
that you can obtain the best possible service
from your amplifier.
1.1 Features
•Crown’s Grounded-Bridge™ design deliv-
ers large voltage swings without using
easily stressed output-transistor configu-
rations like conventional amplifiers. The
results are lower distortion and superior
reliability.
• Patented ODEP (Output Device Emulatioin
Protection) circuitry compensates for
overheating and overload to keep the
amplifier working when others would fail.
• Complete protection against shorted,
open, and mismatched loads, overheating,
DC, high-frequency overload, and full
internal fault protection provided by our
latest protection scheme: “Quad-Mute.”
• Two mono modes (Bridge-Mono and
Parallel-Mono) for driving a wide range of
load impedances.
• Dedicated power supply transformers iso-
late channels in Stereo mode for superb
crosstalk characteristics and reliability —
each channel is virtually a separate
amplifier.
• High damping factor provides superior
control over low-frequency drivers for a
clean, accurate low end.
• PIP (Programmable Input Processor) con-
nector accepts accessories that tailor the
amplifier to suit specific applications.
• Enhanced PIP2™ (Programmable Input
Processor) connector accepts new acces-
sory moudules that further tailor the
amplifier to suit specific applications,
including wideband load current moni-
toring.
• Backed by the industry’s ONLY three-year,
no-fault, fully transferable warranty.
2 How to Use This
Manual
This manual provides you with the necessary
information to safely and correctly set up and
operate your amplifier. It does not cover every
aspect of installation, setup or operation that
might occur under every condition. For addi-
tional information, please consult Crown’s
Amplifier Application Guide (available online at
www.crownaudio.com), Crown Technical Sup-
port, your system installer or retailer.
We strongly recommend you read all instruc-
tions, warnings and cautions contained in this
manual. Also, for your protection, please send
in your warranty registration card today. And
save your bill of sale—it’s your official proof of
purchase.
2 ohm Dual (per ch.)
1 kHz
Power
1,050W
800W
520W
2,070W
1,585W
850W
750W
505W
1,670W
1,485W
8 ohm Bridge-Mono
4 ohm Bridge-Mono
8 ohm Dual (per ch.)
4 ohm Dual (per ch.)
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
**20 Hz–20 kHz Power: refers to maximum average power
in watts from 20 Hz to 20 kHz with 0.1% THD.
MA-2402
*
20 Hz–20 kHz
Power
**
2 ohm Dual (per ch.)
1 kHz
Power
675W
480W
310W
1,300W
970W
585W
450W
295W
1,130W
895W
8 ohm Bridge-Mono
4 ohm Bridge-Mono
8 ohm Dual (per ch.)
4 ohm Dual (per ch.)
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
**20 Hz–20 kHz Power: refers to maximum average power
in watts from 20 Hz to 20 kHz with 0.1% THD.
MA-1202
*
20 Hz–20 kHz
Power
**
2 ohm Dual (per ch.)
1 kHz
Power
400W
325W
225W
750W
655W
335W
300W
210W
650W
605W
8 ohm Bridge-Mono
4 ohm Bridge-Mono
8 ohm Dual (per ch.)
4 ohm Dual (per ch.)
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
**20 Hz–20 kHz Power: refers to maximum average power
in watts from 20 Hz to 20 kHz with 0.1% THD.
MA-602
*
20 Hz–20 kHz
Power
**