JBL CBT 70JE-1 Extension for CBT J-1 Speaker (Black)

Product Overview

The JBL CBT 70JE-1 is a purpose-designed low-frequency extension for the CBT 70J-1 line array column, adding output, bass extension, and lower-frequency pattern control for larger installed-sound rooms. When coupled to a 70J-1 it forms a taller Constant Beamwidth Technology array with extended low-frequency response to 45 Hz. The extension carries four 125 mm low-frequency drivers and 500 watts of power handling. Finished in black, it suits houses of worship, auditoriums, and multi-purpose rooms that need additional headroom.

Product Description

The CBT 70JE-1 connects to a CBT 70J-1 through a built-in, purpose-designed crossover network and the included coupler plate, creating a single integrated column. The combined array provides Constant Beamwidth Technology coverage, extending pattern control to 400 Hz for plus or minus 20 degrees of control and to 200 Hz for substantial off-axis cancellation. Together the system presents sixteen 25 mm tweeters and eight 125 mm low-frequency drivers, with switchable 45°/25° vertical coverage and switchable music/speech voicing. The extension ships with a coupler plate and a wall swivel (pan)/tilt bracket, and its rear insert-point pattern fits standard third-party brackets. This is an add-on component intended for use with a CBT 70J-1 rather than on its own. Explore related models in our JBL Professional installed audio collection.

Key Features

• Purpose-designed extension — The 70JE-1 is built specifically to extend the performance of the CBT 70J-1 line array column.
• Four 125 mm low-frequency drivers — The extension adds four 125 mm (5 in) high-power LF drivers to the array.
• 500-watt power handling — The 70JE-1 section is rated at 500 watts of power handling.
• Built-in crossover network — A purpose-designed crossover combines the extension with the CBT 70J-1.
• Extended bass response — The combined system extends low-frequency response to 45 Hz.
• Extended pattern control — Pattern control reaches 400 Hz for plus or minus 20 degrees and 200 Hz for substantial off-axis cancellation.
• Included mounting hardware — A coupler plate and wall swivel (pan)/tilt bracket are included, and the rear insert-point pattern fits standard third-party brackets.

Typical Applications

• House of worship
• Auditorium
• Multi-purpose room

Technical Specifications

Full electrical specifications should be confirmed against the JBL CBT 70JE-1 specification sheet.

Frequently Asked Questions

Can the CBT 70JE-1 be used on its own? No. It is a purpose-designed extension intended to be coupled to a CBT 70J-1 line array column through the built-in crossover and included coupler plate.

What does the extension add to the system? It increases output, extends low-frequency response to 45 Hz, and improves pattern control at lower frequencies.

How does it attach to the 70J-1? The included coupler plate joins the two columns, and a wall swivel (pan)/tilt bracket is provided for mounting.

Can third-party brackets be used? Yes. The rear insert-point pattern fits standard third-party brackets in addition to the included hardware.

What warranty and support apply? The extension carries the standard JBL Professional warranty, and Creation Networks can advise on pairing it with the correct CBT 70J-1.