Crown Audio MA-36X12 ユーザーズマニュアル

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Macro-Tech MA-24X6 & 36X12 Power Amplifiers
Operation Manual
1 Welcome
Congratulations on your purchase of a Macro-
Tech
®
 dual level professional power amplifier. 
Your amplifier has a separate high-power and 
medium-power channel, making it ideal for 
biamplified systems. The Macro-Tech 24x6 
combines one channel of a Macro-Tech 2400 
with one channel of a Macro-Tech 600. The 
Macro-Tech 36x12 combines one channel of a 
Macro-Tech 3600VZ with one channel of a 
Macro-Tech 1200. And because each model 
has a separate power supply for each channel, 
each channel can be treated as a separate 
power amplifier.
Because it’s a Macro-Tech, you have the added 
benefit of PIP ™  compatibility for access to 
custom input modules and ODEP
®
 protection 
to keep the show going long after other amplifi-
ers would fail.
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, MA-24X6 and MA-36X12 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 incredible voltage swings without 
using stressful output transistor configura-
tions like conventional amplifiers. The 
results are lower distortion and superior 
reliability.
Patented ODEP (Output Device Emulation 
Protection) circuitry compensates for 
overheating and overload to keep the 
amplifier working long after others would 
fail.
IOC
®
 (Input/Output Comparator) circuitry 
immediately alerts of any distortion 
exceeding 0.05%, providing dynamic 
proof of distortion-free performance.
PIP connector accepts accessories that tai-
lor the amplifier to suit specific applica-
tions.
Very low harmonic and intermodulation 
distortion give the best dynamic transfer 
function in the industry.
High damping factor provides superior 
control over low frequency drivers for a 
clean, accurate low end.
Full protection against shorted outputs, 
open circuits, DC, mismatched loads, gen-
eral overheating, high frequency overloads 
and internal faults.
Extra rugged, extruded aluminum front 
panel with ODEP and Signal Presence/IOC 
indicators for each channel, as well as an 
Enable indicator.
Macro-Tech 36x12: Articulated VZ power 
supply for Channel 1 (3600) provides the 
best power matching to your load.
Efficient heat sinks and forced air cooling 
prevent overheating and prolong compo-
nent life.
Balanced inputs with three-position sensi-
tivity switch and adjustable front panel 
level controls.
5-way binding post outputs provide versa-
tile connection.
Mounts in a standard 19-inch (48.3-cm) 
equipment rack (units can also be 
stacked).
Three Year “No-Fault” Full Warranty com-
pletely protects your investment and guar-
antees its specifications.
1.2 How to Use This Manual
This manual provides you with the necessary 
information to safely and correctly setup 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 Tech Support, 
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.