JBL CBT 70J-1 + 70JE-1 System Purpose-Designed Extension for CBT 70J-1 Line Array Column Speaker – Black

JBL CBT 70JE-1 black extension

The JBL CBT 70JE-1 black extension is purpose-built for use with the CBT 70J-1 line array column speaker, providing extended low-frequency response, increased sound output, and enhanced vertical pattern control. By combining with the CBT 70J-1, the array system employs Constant Beamwidth Technology™, offering superior pattern consistency, avoiding narrow vertical beaming and out-of-coverage lobing common in passive column speakers.

This extension features eight 130 mm (5 in) high-power low-frequency drivers and sixteen 25 mm (1 in) soft dome high-frequency drivers arranged for optimal sound distribution. Vertical coverage is switchable between 25° for long-throw applications and 45° for medium-throw coverage, ensuring consistent sound throughout the listening area. Switchable voicing allows either a flat response for music or a mid-range boost for speech.

A built-in purpose-designed crossover network allows seamless integration with the CBT 70J-1, and a coupler plate is included to join the two units securely. The cabinet is made of fiberglass-reinforced ABS with a painted aluminum grille for durability, and the system is IP55-rated when used with the optional MTC-PC2 panel cover, making it suitable for indoor or outdoor professional installations. Flexible mounting is achieved using the included coupler plate, the swivel (pan)/tilt wall bracket from the CBT 70J-1, and additional M6 threaded insert points for suspension or third-party brackets.

Ideal for large halls, lecture rooms, transit areas, and other professional spaces, the CBT 70JE-1 black extension ensures extended bass performance and maintains consistent front-to-back sound coverage when paired with the CBT 70J-1 speaker.

Features of CBT 70JE-1

• Purpose-built extension for CBT 70J-1 line array column

• Eight 5 in LF drivers and sixteen 1 in HF drivers

• Extended bass response down to 45 Hz

• Increased output and extended vertical pattern control

• Switchable vertical pattern: 25° long-throw, 45° medium-throw

• Switchable voicing: flat music or mid-range speech mode

• Built-in purpose-designed crossover network for CBT 70J-1 integration

• Coupler plate included for end-to-end joining with CBT 70J-1

• Constant Beamwidth Technology™ for consistent coverage

• Fiberglass-reinforced ABS cabinet with painted aluminum grille

• IP55-rated with optional MTC-PC2 terminal panel cover

• Swivel (pan)/tilt wall bracket included (from CBT 70J-1)

• Twenty M6 threaded insert points for mounting or suspension

• Ideal for large halls, conference rooms, and professional audio setups

• Optional accessories: flush-mount, stand-mount, or terminal panel cover

• Origin of Country: China

Specifications of CBT 70JE-1