JBL CBT 70JE-1

Overview

The JBL CBT 70JE-1 is an extension module designed to complement the CBT 70J-1 column speaker, enhancing its bass response and overall output. It adds four 5-inch low-frequency drivers and extends the system’s low-frequency range down to 45 Hz, delivering deeper bass and improved pattern control. This extension is ideal for venues that require clear speech intelligibility alongside rich music reproduction, such as lecture halls, auditoriums, and outdoor concourses.

Key features

• Designed to seamlessly connect with the JBL CBT 70J-1 column speaker for a unified sound source
• Extends bass response to 45 Hz, providing fuller and warmer low-end sound
• Incorporates four 5-inch low-frequency drivers to increase punch and headroom
• Built-in crossover network ensures smooth integration with the main speaker array
• Enhances pattern control for more even sound coverage across seating areas
• Handles up to 500 W RMS power for reliable, high-level performance
• Durable enclosure made from fiberglass-reinforced ABS to withstand demanding environments
• Includes a coupler plate for easy alignment and mounting with the main speaker
• Well suited for a variety of settings including auditoriums, lecture halls, stadium concourses, and outdoor venues

Key specs

• Low-frequency extension: down to 45 Hz
• Drivers: four 5-inch low-frequency drivers
• Power handling: 500 W RMS
• Enclosure material: fiberglass-reinforced ABS

Installation and setup

Installation is straightforward thanks to the supplied coupler plate, which aligns the CBT 70JE-1 precisely with the CBT 70J-1 column speaker. This ensures the two cabinets operate as a single coherent source, simplifying setup and maintaining consistent sound quality. The robust enclosure material keeps the unit lightweight yet durable, making it easier to handle during installation and suitable for long-term use in various environments.

Ideal uses and environments

This extension module is a strong choice for venues that demand clear speech and full music reproduction without complicated additional processing. It works well in lecture halls and auditoriums where speech intelligibility is critical, while also adding warmth and depth to music playback. Outdoor venues and stadium concourses benefit from its ability to deliver authoritative announcements and engaging background music, making it a versatile addition to professional sound systems.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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