JBL Professional Line Array CBT 1000 User Manual

1. Product Overview

The JBL Professional Line Array CBT 1000 is a 2-way indoor/outdoor wall-mountable speaker designed for superior and consistent vertical coverage. It utilizes patented Constant Beamwidth Technology™ and a tapered horizontal waveguide to optimize sound distribution in various listening environments.

Key features include:

• Vertical pattern coverage individually adjustable with four "Pattern Up" and four "Pattern Down" coverage angles, offering sixteen different combinations without external DSP processing.
• Asymmetrical vertical settings to direct more sound towards the far area of a room, ensuring more consistent front-to-back sound levels.
• Wide 45 Hz - 20 kHz bandwidth from a two-way coaxial design.
• Low-diffraction baffle to minimize frequency response irregularities.
• Thick, heavy-duty aluminum grille for rust-free outdoor installation.

Figure 1: Front view of the JBL CBT 1000 Line Array Speaker, showcasing its sleek black design and perforated grille.

2. What's in the Box

Upon unboxing your JBL CBT 1000 speaker, please verify that all components are present:

• 1 x JBL Professional Line Array CBT 1000 Speaker
• 2 x Piece Swivel (Pan)/Tilt Wall Bracket

3. Setup and Installation

3.1 Mounting Considerations

The CBT 1000 is designed for wall mounting. Ensure the mounting surface is structurally sound and capable of supporting the speaker's weight (approximately 84 pounds or 38.1 kg) plus any additional forces from environmental factors (e.g., wind if outdoors). Use appropriate fasteners for the wall material.

3.2 Wall Bracket Installation

1. Attach the two swivel (pan)/tilt wall brackets securely to the mounting surface using suitable hardware (not included). Refer to the bracket's specific instructions for hole patterns and recommended fasteners.
2. Ensure the brackets are level and spaced correctly to accommodate the speaker's mounting points.
3. Carefully lift the speaker and attach it to the installed wall brackets. Secure all connections to prevent accidental dislodgement.
4. Adjust the pan and tilt angles of the speaker using the bracket mechanisms to achieve the desired coverage direction.

3.3 Audio Connections

Connect the speaker to your audio amplifier or sound system using appropriate coaxial speaker cables. Ensure correct polarity (+ to + and - to -) for optimal sound performance. The speaker is designed for a 2.0 surround sound channel configuration.

4. Operating Instructions

4.1 Understanding Constant Beamwidth Technology (CBT)

The CBT 1000 utilizes JBL's Constant Beamwidth Technology to provide consistent vertical coverage. This technology minimizes the typical narrow vertical beaming and out-of-coverage lobing found in standard column speakers, ensuring a more uniform sound experience across the listening area.

4.2 Adjusting Vertical Coverage Pattern

The vertical coverage pattern of the CBT 1000 is individually adjustable by the installer. This allows for precise tailoring of sound distribution to the room's geometry. There are four "Pattern Up" coverage angles and four "Pattern Down" coverage angles, resulting in a total of sixteen different coverage combinations. These adjustments are made directly on the speaker and do not require external DSP processing.

For optimal front-to-back SPL levels, the asymmetrical coverage settings can be employed. These settings concentrate more sound with a tighter pattern from the upper half of the array towards the far area of the room, while providing a broader vertical pattern from the lower half of the array for the near area. Consult the detailed installation guide for specific instructions on setting these patterns.

4.3 Tapered Horizontal Waveguide

The patent-pending Tapered Horizontal Waveguide design provides a continuously varying horizontal dispersion. This means a very wide angle of dispersion for short-throw distances and a narrower horizontal angle for long-throw distances, ensuring superior coverage in both the front and rear corners of a room.

4.4 Power Handling

The speaker has a maximum output power of 6000 Watts and a 1500 W RMS rating. Ensure your amplifier's output matches the speaker's power handling capabilities to prevent damage and ensure optimal performance.

5. Maintenance and Care

To ensure the longevity and optimal performance of your JBL CBT 1000 speaker, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to wipe down the speaker's exterior. For stubborn dirt, a slightly damp cloth can be used, but avoid excessive moisture. Do not use harsh chemicals, solvents, or abrasive cleaners.
• Outdoor Use: While designed for outdoor installation with a rust-free aluminum grille, regular inspection for debris, insect nests, or water accumulation is recommended, especially after severe weather.
• Connections: Periodically check all audio cable connections to ensure they are secure and free from corrosion.
• Mounting Hardware: For wall-mounted installations, periodically inspect the mounting brackets and fasteners for any signs of loosening or wear. Tighten as necessary.
• Storage: If storing the speaker for an extended period, do so in a cool, dry place, protected from extreme temperatures and humidity.

6. Troubleshooting

This section addresses common issues you might encounter with your JBL CBT 1000 speaker.

If the issue persists after attempting these solutions, please contact JBL Professional customer support for further assistance.

7. Technical Specifications

Figure 2: Dimensions of the JBL CBT 1000 Line Array Speaker (Height: 40.2", Depth: 13.6", Width: 9.9").

Note: While the speaker features a rust-free aluminum grille for outdoor installation, its water resistance level is specified as "Not Water Resistant." This implies protection against rust in outdoor environments, but not against direct water immersion or heavy rain exposure. Proper placement and protection from direct elements are recommended for outdoor use.

8. Warranty and Support

8.1 Product Warranty

Information regarding the standard manufacturer's warranty for the JBL Professional Line Array CBT 1000 speaker should be included with your purchase documentation. Please refer to these documents for specific terms and conditions.

8.2 Extended Protection Plans

Extended protection plans may be available for purchase to provide additional coverage beyond the standard warranty period. Examples include:

• 2-Year Protection Plan
• 3-Year Protection Plan
• Complete Protect (monthly plan covering eligible purchases)

For details on coverage, pricing, and terms, please consult the provider of these plans or the point of purchase.

8.3 Customer Support

For technical assistance, troubleshooting not covered in this manual, or warranty claims, please contact JBL Professional customer support. Contact information can typically be found on the JBL official website or in your product's packaging.

You may also visit the JBL Store on Amazon for additional product information and resources.