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• Intelligent Surface Mount Technology
•
Patented PWM MOSFET Switching Power Supply (#5,598,325)
•
Class A 100% Discrete Driver Circuit Topology
•
Class A/B, Amplifier (front and rear)
•
Dedicated AdaptiveClass D Sub Channel
•
High Powered Transformer
•
Pure N-Channel Design (front and rear)
•
Doubles power into 2 ohms
•
Bridgeable, multi-channel circuit design
•
Real Time Computerized Protection Circuit
•
18dB/Octave, defeatable/fixed 85Hz HP filter (front and rear)
•
18dB/Octave, butterworth fixed 85Hz LP filter x 1 (subwoofer)
•
Continuously adjustable and defeatable Bass EQ enhancement circuitry, centered at 40Hz - subwoofer channel only
•
Low level inputs
•
External Bass Control Port for easy Bass Adjustment via optional EBC unit (subwoofer)
•
Front, rear and subwoofer individually adjustable input sensitivity
•
Input select allows all channels to be driven using either 2,4 or 5 inputs
• Nickel-plated, heavy duty terminal block type connectors
•
2" max height for ease of installation
•
Unique rubber Insulated Iso-Feet™ (#5,521,792)
• Bold and Aggressive Heatsink Shape and Size
Specifications
THUNDER4405
RMS Power measured at 12.5 Volts DC:
25 Watts RMS/Ch x 4 into 4 Ohms with less than 1% Thd+N
50 Watts RMS/Ch x 4 into 2 Ohms with less than 1% Thd+N
100 Watts RMS bridged x 2 into 4 Ohms with less than 1% Thd+N
Subwoofer
100 Watts RMS into 4 Ohms with less than 1% Thd+N
200 Watts RMS into 2 Ohms with less than 1% Thd+N
Dynamic Power measured at 14.4 Volts DC
Front and Rear
65 Watts x 4 into a 4 Ohm load
125 Watts x 4 into a 2 Ohm load
250 Watts bridged x 2 into a 4 Ohm load
Subwoofer
150 Watts x 1 into a 4 Ohm load
300 Watts x 1 into a 2 Ohm load
Signal to Noise Ratio: ≥100dB A-Weighted (front and rear)
Signal to Noise Ratio: ≥90dB A-Weighted (subwoofer)
Damping Factor: >200
Frequency Response: 20Hz-20kHz±0.25dB (front and rear)
20Hz - 85Hz (subwoofer)
Bass EQ: Variable Bass Boost (0-18dB) centered at 40Hz (subwoofer)
Crossover: Fixed 85Hz, 18dB/Octave, HP Defeatable (front and rear)
Fixed 85Hz, 18dB/Octave, LP (subwoofer)
Dimensions:
13.2" x 9.75" x 2" (33.5cm x 24.8cm x 5.1cm)
15.5" x 9.75" x 2.1" (39.5cm x 24.8cm x 5.3cm) Including IsoFeet™
CONGRATULATIONS...
on your purchase of a new MTX Audio
Thunder Amplifier! MTX has long been
the industry leader in mobile enclosures
and speakers, and we have reached
new heights with the development of the
new MTX Thunder amplifiers. You
couldn’t have chosen a more reliable,
powerful, or better performing amplifier.
In fact, we back up every Thunder
amplifier with a three-year warranty if
installed by an authorized MTX Audio
retailer (see the warranty statement).
Your new MTX Thunder amplifier was
designed, built and thoroughly tested at our
state-of-the-art electronics manufacturing
facility in Phoenix, Arizona. We manufacture
every amplifier using the latest Intelligent
Surface Mount Technology. Some of the
advantages of the new design are its signifi-
cant improvements to the amplifier’s electrical
and mechanical properties. ISMT devices
feature substantially shorter internal and
external lead lengths. This reduces stray
capacitance and inductance, which results in
cleaner and more accurate musical reproduc-
tion with significantly less noise interference.
The ISMT mounter produces amplifier boards
with smaller and lighter components, which
are more resistant to vibrations inherent in the
automotive environment.
A word about power ratings. It is important for you
to know how they stack up. MTX has chosen the
most honest, most conservative way to rate our
amps. We show you the RMS power, at 12.5 volts,
and dynamic power at 14.4 volts. However, we go
above and beyond the call of duty. We test each
amplifier. The technician records the “actual”
power output, and records this number on your
Certified Performance Certificate. The amplifier
must meet or exceed the rated specification
before we’ll ship it. No questions. No exceptions.
We want to ensure you get continuous high
performance from your MTX Thunder
amplifier, so we recommend that you have it
professionally installed by your authorized
MTX dealer.
HOW TO USE THIS MANUAL
If you are installing this amplifier yourself, we
recommend that you read the manual cover-
to-cover before you install it. Familiarize
yourself with the features and details on the
input and output panels. Make sure you have
all the equipment you need. Then follow the
step-by-step installation instructions included.
Sample installation diagrams may be found
on our website:
mtx.com
If you have any questions, write or call us:
MTX Audio
4545 E. Baseline Rd. Phoenix, AZ 85042
602-438-4545 • 800-CALL MTX
technical@mtx.com
mtx.com
Please take a moment to register your
purchase on line at mtx.com.
Please also record the serial number of
your amplifier in the space provided below
and keep this manual for future reference,
as well as your sales receipt as proof of
ownership. (The serial number of your
amplifier is marked on the bottom of its
metal chassis.)
Serial Number:
Date of Purchase:
Introduction
ENGLISH
Features