MTX Audio RT251D Introduction, Features, Specifications, Congratulations, How To Use This Manual

AMPLIFIER OWNER’S MANUAL

Introduction

Features

ENGLISH	CONGRATULATIONS...
	on your purchase of a new MTX Audio
	Road Thunder Amplifier! MTX has long
	been the industry leader in mobile audio,
	and we have reached new heights with
	the development of the new MTX Road
	Thunder amplifiers. You couldn’t have
	chosen a more reliable, powerful, or
	better performing amplifier.

We manufacture every amplifier using the latest Intelligent Surface Mount Technology. Some of the advantages of the new design are its significant improvements to the amplifier’s electrical and mechanical properties. ISMT devices feature substantial- ly shorter internal and external lead lengths. This reduces stray capacitance and induc- tance, which results in cleaner and more accurate musical reproduction with signifi- cantly 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.

We want to ensure you get continuous high performance from your MTX Road 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 online 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.)

•Intelligent Surface Mount Technology

•Patented PWM MOSFET switching power supply (#5,598,325)

•Adaptive Class D technology

•High powered transformer

•High powered stacked inductor

•Pure N-channel design

•Doubles power into 2 ohms

•Real time computerized protection circuit

•Color-coded wire harness for speaker-level input installation

•Smart-Engage™ auto turn on for easy integration with factory head units

•Acoustically Seamless Turn-on/Turn-off (i.e. no noise)

•Low-pass crossover, 85Hz, 24dB/octave low pass

•Switchable Bass Boost @ 0, 6 or 12dB centered at 40Hz

•Low level inputs

•Adjustable input sensitivity

•Nickel-plated, heavy duty terminal block type connectors

•Unique rubber Insulated Iso-Feet™

Specifications

RT251D

RMS Power measured at 14.4 Volts DC:

100 Watts x 1 into a 4 Ohm load with less than 1% Thd+N 200 Watts x 1 into a 2 Ohm load with less than 1% Thd+N

Dynamic Power measured at 14.4 Volts DC:

125 Watts x 1 into a 4 Ohm load

250 Watts x 1 into a 2 Ohm load

Signal to Noise Ratio: ≥ 100dB A-Weighted

Frequency Response: 20Hz-85Hz

Maximum Input: 8Vrms

Bass Boost: Switchable Bass Boost 0, 6, or 12dB centered at 40Hz

Crossover: Fixed @ 85Hz, 18dB/octave low pass

Dimensions: Including Iso-Feet™

7.98" x 9.75" x 2.1" (20.3cm x 24.8cm x 5.3cm)

Serial Number: Date of Purchase:

2

3