Marshall MG50GFX-U 50W 1x12 Combo Guitar Amplifier User Manual

Introduction

The Marshall MG50GFX-U is a 50-watt 1x12 combo guitar amplifier designed to deliver a range of classic and modern tones. This amplifier includes essential features for players, such as a custom 12-inch speaker, multiple channels, and built-in digital effects. It also features an emulated headphone output for silent practice, making it suitable for various playing environments.

Setup

Before operating your Marshall MG50GFX-U amplifier, please follow these setup instructions carefully:

1. Unpacking: Carefully remove the amplifier from its packaging. Inspect for any signs of damage.
2. Placement: Place the amplifier on a stable, flat surface. Ensure adequate ventilation around the unit.
3. Power Connection: Connect the supplied power cord to the amplifier's power input and then to a suitable electrical outlet. Ensure the amplifier's power switch is in the 'OFF' position before connecting.
4. Guitar Connection: Plug your guitar into the 'INPUT' jack on the front panel using a standard instrument cable.
5. Footcontroller Connection (Optional): If using a footcontroller, connect it to the 'FOOTCONTROLLER' input on the front panel.
6. Headphone/Line Out (Optional): For silent practice, connect headphones to the 'LINE OUT' jack. This output provides an emulated speaker sound.

Operating Instructions

The MG50GFX-U offers a versatile range of tones and effects. Familiarize yourself with the controls to achieve your desired sound.

Front Panel Controls

• Input: Connect your guitar here.
• Channels: The amplifier features four channels: Clean, Crunch, OD1, and OD2. Use the channel selector buttons to switch between them.
• Gain: Controls the amount of overdrive or distortion in your sound. Higher settings increase saturation.
• EQ (Equalization): Adjust the tonal characteristics of your sound:
  • Bass: Controls the low-end frequencies, adding depth to your tone.
  • Middle: Adjusts the mid-range frequencies, affecting the fullness and presence of your sound.
  • Treble: Controls the high-end frequencies, making your sound brighter or smoother.
• Reverb: Adds a spacious, ambient effect to your sound.
• Volume: Controls the output level of the selected channel.
• FX (Effects): The MG50GFX-U includes modern digital effects such as Delay, Chorus, and Flanger. Use the FX knob to select and adjust the intensity of these effects.
• Master: Controls the overall output volume of the amplifier.
• Tuner: An onboard tuner is included for convenient guitar tuning.
• Store: Use this button to save your custom settings for quick recall.
• Tap (Manual): Allows for manual tap tempo control for time-based effects like delay.
• Line Out: Emulated headphone output for silent practice or direct recording.

Understanding Amplifier Basics

For a visual guide on how to use your amplifier's controls and understand different amplifier types, please watch the official Marshall video below:

Maintenance

Proper maintenance ensures the longevity and optimal performance of your amplifier.

• Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Avoid using abrasive cleaners or solvents, as these can damage the leather and plastic materials.
• Storage: Store the amplifier in a dry, temperature-controlled environment, away from direct sunlight and extreme temperatures.
• Ventilation: Ensure that the amplifier's vents are not obstructed to prevent overheating.
• Transportation: When transporting the amplifier, ensure it is securely packed to prevent physical damage.

Troubleshooting

If you encounter any issues with your amplifier, please refer to the following common troubleshooting steps:

• No Power: Check the power cable connection at both the amplifier and the wall outlet. Ensure the power switch is in the 'ON' position. Test the outlet with another device.
• No Sound: Verify that your guitar is properly plugged into the 'INPUT' jack. Check all volume controls (guitar, channel volume, master volume) are turned up. Ensure the speaker cable (if applicable) is securely connected. Test with a different instrument cable or guitar if possible.
• Distorted Sound (Unwanted): Check the 'GAIN' setting; if it's too high for the selected channel, it may cause unwanted distortion. Adjust EQ settings.
• Effects Not Working: Ensure the FX knob is engaged and adjusted correctly.

If the problem persists after attempting these steps, please contact Marshall customer support or an authorized service center.

Specifications

Warranty and Support

Warranty Information

Marshall USA offers a limited non-transferable warranty for all Marshall amplifiers sold by authorized Marshall USA dealers. The warranty covers defects in material or workmanship under normal use and service for a period of five (5) years on parts and three (3) years on labor and speakers from the original date of purchase. Products must be purchased from an authorized dealer within the continental United States to receive warranty service.

Any products found to be defective within the applicable period will be replaced at the option of Marshall USA, without any charge, provided that:

• The product was not modified, misused, abused, or improperly maintained by any person not authorized by Marshall USA.
• Failure resulted from a defect in material or workmanship and was not damaged due to use other than its intended use.
• The product was not used in abnormal, excessive, or unusual operating conditions.
• The product is promptly delivered prepaid to the seller at the place of purchase or to an authorized Marshall USA warranty service center with proof of purchase within the applicable period.

Do not return units to Marshall USA for service. There are no warranties, expressed or implied, other than those expressed herein. Further, there is no warranty of merchantability or fitness for a particular purpose. This warranty does not cover units for loan or rental. Some states do not allow limitations on the duration of implied warranty or the exclusion may not apply to some purchasers. This warranty gives purchasers specific legal rights, and purchasers may also have other rights which vary from state to state.

Customer Support

For further assistance, technical support, or to locate an authorized service center, please visit the official Marshall website or contact their customer service department. Keep your proof of purchase handy when seeking support.