JBL JS-360 Speaker Stand Instruction Manual

1. Introduction

The JBL JS-360 is a robust steel speaker stand designed for large bookshelf speakers, particularly those with 30cm (12-inch) woofers. It provides stable support for optimal audio performance by minimizing unwanted vibrations and resonance, allowing your speakers to deliver clear and accurate sound reproduction.

2. Product Features

• Robust Construction: Features three support columns to ensure rigid system support and eliminate unwanted wobbling.
• Vibration Damping: Columns can be filled with cast iron powder (user-supplied) to absorb vibration energy, suppress resonance, and eliminate sound coloration.
• Heavy-Duty Top Plate: Utilizes a thick steel top plate, further reinforced with an additional plate, to enhance strength and prevent resonance.
• Isolation Pads: Includes felt pads for the contact surface between the top plate and the speaker, effectively suppressing cabinet bottom vibrations and preventing unwanted vibration transmission to the top plate.
• Stable Base Plate: Features an extra-thick steel base plate to prevent warping and unwanted vibrations, ensuring secure support for the speaker system.
• Adjustable Spike Feet: Equipped with height-adjustable spike feet at the four corners of the base plate, along with lock nuts and stainless steel spike receiver plates, for precise leveling and enhanced stability.
• Aesthetic Finish: Features a dark blue rough textured finish, designed to complement the blue baffles of JBL Studio Monitor series speakers.

3. Package Contents

Please verify that all the following components are included in your package:

• JBL JS-360 Speaker Stand components (Base Plate, Support Columns, Top Plate)
• Felt pads (for speaker isolation)
• Height-adjustable spike feet
• Lock nuts (for spike feet)
• Stainless steel spike receiver plates
• Assembly tools

4. Setup Instructions

Follow these steps to assemble your JBL JS-360 speaker stand:

1. Unpack Components: Carefully remove all parts from the packaging and lay them out on a clean, soft surface to prevent scratches.
2. Assemble Base: Attach the support columns to the base plate using the provided assembly tools. Ensure all connections are secure and tightened appropriately.
3. Fill Columns (Optional): For enhanced vibration damping, fill the support columns with dry cast iron powder (not included). This step is optional but recommended for optimal performance.
4. Attach Top Plate: Secure the top plate to the assembled columns. Ensure it is firmly attached and level.
5. Apply Felt Pads: Place the felt pads on the top plate where the speaker will rest. These pads help to isolate the speaker from the stand.
6. Position Speaker: Carefully place your speaker onto the felt pads on the top plate. Ensure it is centered and stable.
7. Adjust Spike Feet: Install the height-adjustable spike feet into the base plate. Use the lock nuts and stainless steel receiver plates to level the stand and achieve optimal stability on your floor surface. Adjust each spike until the stand is perfectly level and does not wobble.

Image: An assembled JBL JS-360 speaker stand, showcasing its dark blue finish and robust three-column design. The top plate is visible, ready to support a large bookshelf speaker.

5. Usage Guidelines

• Ensure the speaker stand is placed on a stable, level surface to prevent tipping.
• Verify that the speaker is centered and securely positioned on the top plate to maintain balance.
• Avoid placing the stand in high-traffic areas where it might be accidentally bumped.
• Regularly check the tightness of all screws and connections to maintain stability and prevent loosening over time.

6. Maintenance

• Clean the stand with a soft, dry cloth. For stubborn marks, a slightly damp cloth can be used, followed by immediate drying.
• Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish.
• Periodically check the spike feet and lock nuts for proper adjustment and tightness to ensure continued stability.

7. Troubleshooting

• Instability or Wobbling:
  • Check if all assembly screws are tightened securely.
  • Ensure the stand is placed on a level surface. Adjust the height-adjustable spike feet as necessary to eliminate any wobble.
• Unwanted Vibrations or Resonance:
  • Verify that the felt pads are correctly placed between the speaker and the top plate.
  • If not already done, consider filling the support columns with cast iron powder for enhanced damping.
  • Ensure the spike feet are properly adjusted and isolating the stand from the floor, especially on carpeted surfaces.

8. Specifications

9. Warranty and Support

For detailed warranty information, terms, and conditions, please refer to the warranty card or documentation included with your JBL JS-360 speaker stand. If you require technical assistance, have questions about product operation, or need to report a defect, please contact JBL customer service directly through their official website or the contact information provided in your product documentation.