MTX AUDIO MUD100.4 400-Watt RMS 4-Channel Power Sports Amplifier Owner’s Manual

: June 9, 2024
: MTX Audio

Table of Contents

MTX AUDIO MUD100.4 400-Watt RMS 4-Channel Power Sports Amplifier
INTRODUCTION
FEATURES
CONTROL FUNCTIONS
PANEL LAYOUT
WIRING DIAGRAM
INSTALLATION AND MOUNTING
TROUBLESHOOTING
SPECIFICATIONS
WARRANTY PERIOD
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

MTX AUDIO MUD100.4 400-Watt RMS 4-Channel Power Sports Amplifier

MTX-AUDIO-MUD100-4-400-Watt-RMS-4-Channel-Power-Sports-Amplifier-
PRODUCT

INTRODUCTION

Thank you for purchasing this MTX Audio Hi-Performance amplifier. Proper installation matched with MTX speakers and subwoofers provide superior sound and performance for endless hours of enjoyment whether you are waking the neighbors or just out enjoying your tunes. Congratulations and enjoy the ultimate audio experience with MTX!

FEATURES

Compact Size
Double Sided PCB
Surface Mount Components
MOSFET Design
LPF and HPF Crossover
Noise Free Design

CONTROL FUNCTIONS

Wiring Harness – All wiring to the amplifier will run through the wiring harness.
- Speakers – Connect speakers/subwoofers to these terminals. Be sure to check wire for proper polarity. Never connect the speaker cables to the chassis ground.
- + BATT (+12 Volt Power) – Connect this terminal through a FUSE or CIRCUIT BREAKER to the positive terminal of the vehicle battery or the positive terminal of an isolated audio system battery. WARNING: Always protect this power cable by installing a fuse or circuit breaker of the appropriate gauge within 18 inches (45cm) of the battery terminal connection.
- Remote Turn On – This terminal turns on the amplifier when (+) 12 volt is applied to it. Connect it to the remote turn on lead of the head unit or signal source.
- GND – Connect this cable directly to the frame of the vehicle. Make sure the metal frame has been stripped of all paint down to the bare metal. Use the shortest distance possible. If a suitable ground point is not available on the frame, connect this terminal directly to the vehicle battery ground terminal, or any other factory ground points.
- RCA Input Jacks – This unit is designed to function with source units that feature RCA outputs. If your source unit does not have RCA outputs you will need to use the speaker level inputs. A source unit with a minimum level of 200mV is required for proper operation.
Gain Control – The Gain control will match the amplifier’s sensitivity to the source units signal voltage. The operating range is 10V to 200mV. NOTE: This is NOT a volume control.
X-Over Mode – These controls allow control over the frequencies played. There is an option for Full, 80Hz, or 200Hz on the front channels, and an option for Full Range, High Pass, or Low Pass on the rear channels.

PANEL LAYOUT

MTX-AUDIO-MUD100-4-400-Watt-RMS-4-Channel-Power-Sports-
Amplifier-FIG 2

WIRING DIAGRAM

See page 22 for amplifier wiring diagrams.

INSTALLATION AND MOUNTING

MTX recommends your new Thunder Sports™ amplifier be installed by a 12 volt installation specialist. Any deviation from specified installation instructions can cause serious damage to the amplifier, speakers and/or vehicle’s electrical system. Damage caused from improper installation is NOT covered under warranty. Please verify all connections prior to system turn on.

Disconnect the vehicle’s negative battery cable.
Determine the mounting place for your MTX amplifier. Keep in mind there should be sufficient air flow for proper cooling. Mark the mounting holes from the amplifier to be drilled. Before drilling make sure all vehicle wires, gas lines, brake lines and gas tank are clear and will not interfere with installation. Drill the desired holes and mount the MTX amplifier.
Install a positive (+) power cable from the vehicle’s battery through the firewall using a grommet or firewall bushing to avoid cable damage from sharp edges of the firewall. Run the cable through the interior of the vehicle and connect it to the amplifier’s +12V wire. Do not connect to the battery at this time. NOTE: Use only proper gauge wire for both positive and negative connections.
Install a circuit breaker or fuse within 18 inches of the battery. This effectively lowers the risk
of severe damage to you or your vehicle in case of a short circuit or accident. Make sure the circuit breaker is switched Off or the fuse is taken out of the fuse holder until all connections are made. Now connect your positive power cable to the positive battery terminal of the battery.
Grounding – Locate a proper ground point on the vehicle’s chassis and remove all paint, dirt or debris to reveal a bare metal surface. Attach the amplifier’s ground wire to that contact point.
If a suitable location is not available connect this terminal to the vehicle’s negative battery terminal.
Connect a Remote Turn-On wire from the source unit to the MTX amplifier’s (REM) wire. If the source unit does not have a dedicated Remote Turn-On lead, you may connect to the source unit’s Power Antenna lead.
Supply the signal to your MTX amplifier by connecting the signal cables using high quality RCA or speaker wires to the corresponding outputs at the source unit and inputs of the amplifier.
Connect your speakers to your MTX amplifier’s speaker wires using the correct gauge
speaker wire. Your MTX amp can drive a 2Ω stereo/4Ω bridged minimum load for optimum power.
Double check all previous installation steps, in particular, wiring and component connections. Once verified, reconnect the vehicle’s negative battery cable, turn the circuit breaker on or place the fuse in the fuse holder.

NOTE: Gain Levels on the amplifier should be turned all the way down (counter clockwise) before proceeding with adjustments.

INSTALLATION
For proper performance and safety, MTX recommends installing an inline fuse per the owner’s manual instructions according to the following.

TROUBLESHOOTING

Problem	Cause	Solution
Output Distorted	Head Unit Volume Set Too High	Lower Head Unit Volume
Amplifier Gain Set Too High	Lower Amplifier Gain
Balance Reversed	Speaker Wire L & R Reversed	Correct Speaker Wire

Orientation
---|---|---
RCA Inputs Reversed| Reverse RCA Inputs
Bass is Weak| Speakers Wired Out of Phase| Wire Speakers with Correct Phase
---|---|---
Not Using MTX Subwoofers| Buy MTX Subwoofers
Blowing Fuses| Excessive Output Levels| Lower the Volume
---|---|---
Amplifier Defective| Return for Service

SPECIFICATIONS

Model	MUD100.4
Description	50 W RMS/CH Stereo

THANK YOU
Thank you for making the AWESOME decision to purchase our MTX Audio cage mount speaker
pod. This high performance speaker features all-weather construction designed to deliver exceptional sound quality and volume for high output systems for those that love to hear their music wherever they are. Additionally, each speaker enclosure includes a RGB LED light kit that enables customization of the speaker lighting color on the grille. So, what are you waiting for? It’s time to get the rumble in your ride and go hit the trails! Oh, and congratulations on your purchase, thanks for your support and most importantly, enjoy the ultimate audio experience with MTX!

WARRANTY PERIOD

At MTX Audio we engineer products that will stand up to the test of time. We also realize that from time to time a problem may occur. That’s why our products carry a 2-year limited warranty that begins at the time of sale to the end user.
Of course, we’re here to help. If you experience an issue with any of our products within the warranty period, please contact our customer service technical line at 1-800-CALL-MTX to help troubleshoot your issue. If, after speaking with our technical experts it is determined that a problem lies with the product, the technician will provide you with a Return Authorization number and all relevant details you’ll need to get the product taken care of.

WE’RE HERE TO HELP
We’re here to help with any installation or technical support. Visit mtx.com to chat, call 1-800-225-5689 to speak with an MTX Technical Support representative, or visit youtube.com/user/MTXAudioUSA to view product videos.
DON’T FORGET TO REGISTER YOUR PRODUCT
Don’t forget to register your new MTX Audio product. Visit mtx.com/productregistration or scan the QR code to the right.
Model #
Serial #
Dealer’s Name
Date of Purchase

IMPORTANT NOTICE
Whenever working on the vehicle, it is recommended to disconnect the battery prior to starting work. Failure to do so may lead to a risk of electric shock or equipment damage.
When connecting power and ground wires ensure that the red power wire is fused at the point where it is connected to the vehicle’s battery. Failure to do so can result in damage to the vehicle if a short circuit develops between the vehicle connection point and the product.