MUD100.4 - Receiver MTX Audio - Free user manual and instructions

Product Type	Marine Amplifier
Model	MUD100.4
Brand	MTX Audio
RMS Power (4 Ohm Stereo)	50 W x 4
RMS Power (2 Ohm Stereo)	100 W x 4
RMS Power (4 Ohm Bridged)	200 W x 2
Frequency Response	10 Hz - 32 kHz
Total Harmonic Distortion (THD)	< 0.2% at 4 Ohm, 1W
Signal-to-Noise Ratio	> 75 dB
Input Level (Low Level)	0.2 - 5V
Input Level (High Level)	0.4 - 10V
Low Pass Filter (Rear)	80 Hz Fixed
High Pass Filter (Rear)	80 Hz Fixed
High Pass Filter (Front)	Selectable 80/200 Hz
Minimum Load	2 Ohm (Stereo), 4 Ohm (Bridged)
Low Voltage Protection	Yes, protect below 8.5V
Fuse Rating	30A
PCB Type	Double Sided FR-4
Component Mounting	Surface Mount (SMD)
Dimensions (Height)	1.86" (47.2 mm)
Dimensions (Width)	5.51" (140 mm)
Dimensions (Length)	6.52" (165.5 mm)
Cooling	Requires adequate airflow for proper cooling

Frequently Asked Questions - MUD100.4 MTX Audio

What is the recommended fuse size for the MUD100.4 amplifier?

The recommended fuse size is 30A. Always install a fuse or circuit breaker within 18 inches of the battery connection.

What is the minimum impedance load for stereo and bridged modes?

The minimum load is 2 ohms in stereo mode and 4 ohms when bridged.

How do I set the gain control?

The gain control matches the amplifier's sensitivity to the source unit's signal voltage (range 0.2V to 10V). It is not a volume control. Start with the gain fully counterclockwise and adjust while listening for distortion.

What crossover options are available?

Front channels have a selectable high-pass filter at 80Hz or 200Hz. Rear channels have a fixed 80Hz high-pass and a fixed 80Hz low-pass (LPF) filter. There is also a Full Range mode.

Can I use speaker-level inputs?

Yes, if your source unit lacks RCA outputs, you can use the speaker level inputs. The amplifier accepts high-level inputs (0.4-10V).

What type of PCB does the MUD100.4 use?

It uses a double-sided FR-4 PCB with surface mount components (SMD).

How do I properly ground the amplifier?

Connect the GND terminal directly to the vehicle's chassis, stripping paint down to bare metal. Use the shortest distance possible. Alternatively, connect to the battery's negative terminal.

What is the power output at 2 ohms stereo?

At 2 ohms stereo, the amplifier delivers 100 watts RMS per channel (at 14.4V).

What should I do if the amplifier blows fuses?

First, lower the volume as excessive output can cause blown fuses. If the problem persists, the amplifier may be defective and should be returned for service. Ensure the correct 30A fuse is used.

Does the amplifier have low-voltage protection?

Yes, it has low-voltage protection that activates when the supply voltage drops below 8.5V to prevent damage.

USER MANUAL MUD100.4 MTX Audio

© 2015 Mitek Corporation. All rights reserved. MTK is a trademark of Mitek Corporation. Designed and Engineered in the U.S.A. MTX Audio, 4545 East Baseline Rd. Phoenix, AZ 85042 U.S.A. MTX005177 RevA 4/15 • 21A10406 • AW0015890
MGX

MUD100.4 AMPLIFIER

Use your smartphone to scan and download the Owners Manual.

4Ω Stereo

2Ω Stereo

MTX.COM

© 2015 Mitek Corporation. All rights reserved. MTX is a trademark of Mitek Corporation. Designed and Engineered in the U.S.A. MTX Audio, #545 East Baseline Rd. Phoenix, AZ 85042 U.S.A. MTX005177 RevA 4/15 • 21A10406 • AW0015090
MX

MUD100.4 AMPLIFIER

Use your smartphone to scan and download the Owners Manual.

Stereo 4Ω Front/4Ω Bridged Rear

Use your smartphone to scan and learn more about all of the all-weather solutions available from MTX Audio.

PRODUCT INFORMATION

Model # Serial # Dealer's Name Date of Purchase

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

1. 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.

1. 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.
2. 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

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.

1. Disconnect the vehicle's negative battery cable.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.

MUD100.4 30A Fuse

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
RMS Power at 14.4V
4Ω Bridged Load 200 W RMS
2Ω Load 100 W RMS
4Ω Load 50 W RMS
Features
Input Level 0.2 - 5V Low Level, 0.4 - 10V High Leve
Frequency Response 10Hz - 32 kHz
Low Pass Filter (LPF) Rear Only 80Hz Fixed
High Pass Filter (HPF) Rear 80Hz Fixed
High Pass Filter (HPF) Front Selectable 80/200Hz
THD at 4Ω , 1W <0.2%
Signal-to-Noise Ratio >75dB
Minimum Load 2Ω
Low Voltage Protection Yes, Protect <8.5V
Components & PCB	SMD Parts / Double Sided FR-4 PCB
Dimensions
Height	1.86" (47.2mm)
Width	5.51" (140mm)
Length	6.52" (165.5mm)

WIRING DIAGRAM

4Ω Stereo

WIRING DIAGRAM

2Ω Stereo

WIRING DIAGRAM

Stereo 4Ω Front/4Ω Bridged Rear

WIRING DIAGRAM

4Ω Bridged Subwoofers

© 2015 Mitek Corporation. All rights reserved. MTX is a trademark of Mitek Corporation. Designed and Engineered in the U.S.A.

Due to continual product development, all specifications are subject to change without notice.

MTX Audio, 4545 East Baseline Rd. Phoenix, AZ 85042 U.S.A.

MTX005172 RevA 4/15 • 21A10394 • AW0015062

N535