MartinLogan Motion FX Surround Speaker User Manual

1. Introduction

The MartinLogan Motion FX Surround Speaker is designed to deliver high-quality sound for your home theater or stereo system. Inspired by MartinLogan's electrostatic loudspeakers, the Motion Series combines advanced transducer technology with compact bass for a smooth, refined sound, dynamic range, and clarity.

The Motion FX's performance is characterized by its responsive Folded Motion™ Tweeter and powerful Folded Motion Cascading Bass Port technology, all within a compact design.

2. Product Overview and Key Features

The Motion FX speaker features a sleek design and incorporates several advanced technologies for superior audio performance.

2.1. Design and Aesthetics

Figure 1: Front view of the Motion FX speaker, highlighting its compact size and matte black finish.

Figure 2: Detailed view of the speaker's front grille, featuring a unique dimpled design that subtly highlights the advanced Folded Motion Tweeter.

The Motion FX features a clean, simple shape designed to blend seamlessly with modern home entertainment setups. The front perforated metal grille includes subtle dimples that highlight the tweeter. The cabinet material is denser than typical plastic, which helps to quiet internal noise and deliver a clear sound.

2.2. Folded Motion™ Tweeter

The Folded Motion Tweeter operates by moving air perpendicular to its folded diaphragm, similar to an accordion. This design requires significantly less excursion than traditional dome tweeters, minimizing distortion and providing a fast response time. Its increased surface area ensures wide, controlled sound dispersion, creating a realistic sound stage.

2.3. Folded Motion™ Cascading Bass Port

To achieve robust low-end bass reproduction in a compact form factor, the Motion FX incorporates a unique Folded Motion Cascading Bass Port. This solution folds a long tuned port back on itself, effectively doubling the port length within a small dimension. This design increases bass output, allowing the speaker to deliver detailed low bass at high volumes with minimal distortion.

Figure 3: Rear view of the Motion FX speaker, showing the high-quality push-style terminals and the innovative Folded Motion Cascading Bass Port.

3. Setup and Installation

Proper placement and connection are crucial for optimal performance of your Motion FX speaker.

3.1. Speaker Placement

The Motion FX is designed for versatility in placement, especially as an effects channel in a surround sound system. Its curved back allows for flush wall mounting, while 45-degree angles on the sides enable corner mounting or angled wall mounting. Consider the acoustics of your room and the desired sound dispersion when choosing a mounting location.

Figure 4: Side profile of the Motion FX speaker, illustrating its curved design for flexible mounting options, including flush wall or corner placement.

• Wall-Mounting: The curved back allows the speaker to sit flush against a wall, with ample space for speaker wire.
• Corner Mounting: The 45-degree side angles facilitate easy and effective corner placement.
• High Placement: If mounting high, the speaker can be inverted to direct sound downwards into the listening area.

3.2. Connecting the Speaker

The Motion FX features convenient, high-quality push-style terminals for easy hookup. These terminals are designed with curved inserts to guide speaker wire effortlessly into place. For the fastest connection, remove the rubber plugs in the back to accept banana plugs.

1. Identify the positive (+) and negative (-) terminals on both your amplifier/receiver and the Motion FX speaker.
2. For bare wire connections: Push down on the binding post, insert the speaker wire into the wire guide, and release the post for a secure connection.
3. For banana plug connections: Remove the rubber plugs from the binding posts, then insert the banana plugs firmly into the terminals.
4. Ensure correct polarity (positive to positive, negative to negative) for optimal sound performance.

4. Operating the Speaker

Once properly installed and connected, the MartinLogan Motion FX speaker operates as part of your audio system. No specific user controls are present on the speaker itself, as its function is to reproduce audio signals from your connected amplifier or receiver.

For best results, ensure your amplifier or receiver is capable of handling a 4 Ohm impedance load, as some receivers may only support a minimum of 6 Ohm. While the speaker will function at average TV listening levels with higher impedance amplifiers, for louder volumes, a compatible amplifier is recommended to prevent potential protection mode activation.

5. Maintenance

To ensure the longevity and optimal performance of your MartinLogan Motion FX speaker, follow these simple maintenance guidelines:

• Cleaning: Gently wipe the speaker cabinet with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish.
• Grille Care: The perforated metal grille can be carefully dusted with a soft brush or a vacuum cleaner with a brush attachment on a low setting.
• Placement: Avoid placing the speaker in direct sunlight or near heat sources, which can cause discoloration or or damage to the cabinet.
• Ventilation: Ensure adequate airflow around the speaker, especially if it is placed in an enclosed space, to prevent overheating.

6. Troubleshooting

If you encounter issues with your Motion FX speaker, consider the following common troubleshooting steps:

• No Sound:
  • Check all speaker wire connections at both the speaker and the amplifier/receiver. Ensure they are secure and correctly polarized (+ to +, - to -).
  • Verify that the amplifier/receiver is powered on and set to the correct input source.
  • Confirm that the volume is turned up and not muted.
• Distorted Sound:
  • Reduce the volume level on your amplifier/receiver.
  • Check for loose speaker wire strands that might be touching each other or the speaker cabinet.
  • Ensure your amplifier/receiver is compatible with the speaker's 4 Ohm impedance. Overdriving an incompatible amplifier can cause distortion or trigger protection modes.
• Weak Bass:
  • Verify that the speaker is properly sealed and there are no air leaks around the port or connections.
  • Check speaker placement; sometimes moving the speaker closer to a wall or corner can enhance bass response.
  • Ensure your amplifier's bass settings are appropriately configured.

If problems persist, consult a qualified audio technician or contact MartinLogan customer support.

7. Specifications

Detailed technical specifications for the MartinLogan Motion FX Surround Speaker:

8. Warranty and Support

8.1. Warranty Information

The MartinLogan Motion FX Surround Speaker comes with a Full Warranty. For specific terms, conditions, and duration of the warranty, please refer to the warranty card included with your product or visit the official MartinLogan website.

8.2. Customer Support

For further assistance, technical support, or service inquiries, please visit the official MartinLogan website or contact their customer service department. You can find contact information and additional resources at the MartinLogan Official Website.

9. Official Product Video