Jbl Professional Cbt 70J-1 Passive Coaxial Line Array

Product Description

The JBL PROFESSIONAL CBT 70J-1 is a passive coaxial line array loudspeaker designed for professional audio installations. Its J-shaped 70cm column configuration uses Constant Beamwidth Technology to provide controlled vertical coverage while maintaining consistent tonal balance across the listening area. Licensed electricians and low-voltage audio contractors typically specify this unit for permanent installations where even sound distribution is a priority. The coaxial driver arrangement delivers both high- and low-frequency content from a single point source, reducing comb filtering and simplifying system alignment.

The CBT 70J-1 is suited for commercial and institutional environments such as houses of worship, auditoriums, restaurants, and multipurpose venues. The J-shaped array geometry is particularly effective in spaces with mixed ceiling heights or tiered seating, where a straight column would produce uneven coverage. Professional AV integrators and sound contractors install this unit as part of a larger distributed or zoned audio system.

Key Features

• J-shaped 70cm column form factor for asymmetric vertical coverage control
• Constant Beamwidth Technology (CBT) for consistent tonal balance over distance
• Coaxial driver design provides point-source coherence across the frequency range
• Passive design allows use with standard professional amplification
• Intended for permanent installation in commercial and institutional venues

Compatibility

Designed as an OEM-style passive loudspeaker for use in professional installed-sound systems requiring controlled directivity column arrays.

Installation Notes

Installation should be performed by a qualified low-voltage contractor or licensed audio systems integrator in accordance with applicable local electrical codes. Power down the amplifier and disconnect all signal sources before making loudspeaker connections. Verify amplifier output impedance and power ratings are compatible with the speaker before energizing the system. Secure all mounting hardware to rated structural surfaces per the manufacturer mounting instructions.