MTX Audio 421D owner manual Introduction Features, Specifications

POWER AMPLIFIER OWNER’S MANUAL

Introduction

Features

CONGRATULATIONS...

ENGLISH	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 cho-
	sen a more reliable, powerful, or better per-
	forming 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).

HOW TO USE THIS MANUAL

If you are installing this amplifier yourself, we rec- ommend 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 instruc- tions included. Sample installation diagrams may be found on our website:

mtx.com

If you have any questions, write or call us:

•Thunder Amplifiers are Covered by One or More of the Following United States of America Patents: #5,598,325, #5,631,608, #5,783,970

•Acoustically Seamless Turn-On/Turn-Off

•Adjustable Input Sensitivity

•Anti-Shock PCB Mounting Design

•High Powered Transformer

•Intelligent Surface Mount Technology

•Nickel-Plated, Heavy Duty Terminal Block Connectors

•Patented PWM MOSFET Switching Power Supply

•Real Time Computerized Protection Circuit

•Unique Rubber Insulated Iso-Feet™

•24dB/Octave Crossover

•Adaptive Class D Technology

•Buffered RCA Output for Daisy-Chaining Multiple Amplifiers

•Color-Coded Wire Harness for Speaker-Level Input Installation

•External Bass Control (EBC) Port

•High Power Inductor Output Filter

•Pure N-Channel Design

•Speaker and Low Level Inputs

•Thunder EQ Bass Enhancement

•Smart-Engage™ Auto Turn-On for Easy Integration with Factory Head Units (THUNDER421D, THUNDER801D)

•Phase Select (Thunder1501D)

Your new MTX Thunder amplifier was designed, built and thoroughly tested at our state-of-the-art electronics manufacturing facility. We manufacture every amplifier using the latest Intelligent Surface Mount Technology. Some of the advantages of the new design are its significant

MTX Audio

4545 E. Baseline Rd. Phoenix, AZ 85042

602-438-4545 • 800-CALL MTX

technical@mtx.com

mtx.com

Specifications

improvements to the amplifier’s electrical and mechanical properties. ISMT devices feature sub- stantially shorter internal and external lead lengths. This reduces stray capacitance and inductance, which results in cleaner and more accurate musical reproduction with significantly less noise interfer- ence. The ISMT mounter produces amplifier boards with smaller and lighter components, which are more resistant to vibrations inherent in the automo-

tive 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 per- formance from your MTX Thunder amplifier, so we recommend that you have it professionally installed by your authorized MTX dealer.

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:

THUNDER421D

•RMS Power measured at 12.5 Volts DC:

150 Watts x 1 into a 4 Ohm load with less than 1% Thd+N 300 Watts x 1 into a 2 Ohm load with less than 1% Thd+N

•Dynamic Power measured at 14.4 Volts DC:

210 Watts x 1 into a 4 Ohm load

420 Watts x 1 into a 2 Ohm load

•Signal to Noise Ratio: ≥ 100dB A-Weighted

•Damping Factor: >100

•Frequency Response: 20Hz-200Hz ± 3dB

•Maximum Input: 8Vrms

•Thunder EQ: Variable Bass Boost (0-18dB) centered at 40Hz

•Crossover: Variable 40Hz to 200Hz, 24dB/Octave Low Pass

•Dimensions: 9.4" x 9.75" x 2.1" (23.9cm x 24.8cm x 5.3cm)

THUNDER801D

•RMS Power measured at 12.5 Volts DC:

250 Watts x 1 into a 4 Ohm load with less than 1% Thd+N 500 Watts x 1 into a 2 Ohm load with less than 1% Thd+N

•Dynamic Power measured at 14.4 Volts DC:

400 Watts x 1 into a 4 Ohm load

800 Watts x 1 into a 2 Ohm load

•Signal to Noise Ratio: ≥ 100dB A-Weighted

•Frequency Response: >100

•Frequency Response: 20Hz-200Hz ± 3dB

•Maximum Input: 8Vrms

•Thunder EQ: Variable Bass Boost (0-18dB) centered at 40Hz

•Crossover: Variable 40Hz to 200Hz, 24dB/Octave Low Pass

•Dimensions: 11.5" x 9.75" x 2.1" (29.3cm x 24.8cm x 5.3cm)

THUNDER1501D

•RMS Power measured at 12.5 Volts DC:

500 Watts x 1 into a 4 Ohm load with less than 2% Thd+N 1000 Watts x 1 into a 2 Ohm load with less than 2% Thd+N

•Dynamic Power measured at 14.4 Volts DC:

750 Watts x 1 into a 4 Ohm load

1500 Watts x 1 into a 2 Ohm load

•Signal to Noise Ratio: ≥ 100dB A-Weighted

•Damping Factor: >100

•Frequency Response: 20Hz-200Hz ± 3dB

•Maximum Input: 8Vrms

•Thunder EQ: Variable Bass Boost (0-18dB) centered at 40Hz

•Crossover: Variable 40Hz to 200Hz, 24dB/Octave Low Pass

•Dimensions: 17.8" x 9.75" x 2.1" (45.3cm x 24.8cm x 5.3cm)

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