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

The JBL CBT 70JE-1 is an extension module that pairs with the CBT 70J-1 column speaker to add deeper bass, greater pattern control, and higher overall output. By linking directly to the main array, it extends the low-frequency response to 45 Hz and brings four 5 inch low-frequency drivers into the system through its built-in crossover network.

This added low-end impact benefits venues that need clear speech and full music reproduction at the same time. In a lecture hall or auditorium, speech remains intelligible while music gains warmth. In outdoor venues or stadium concourses, the extension helps announcements carry authority and live playlists feel more engaging.

Installation is straightforward. A supplied coupler plate lines up the CBT 70JE-1 with the CBT 70J-1 so the two cabinets behave as a single, coherent source. The enclosure uses a fiberglass-reinforced ABS material, giving it the strength to handle demanding environments while keeping weight manageable. With 500 W RMS power handling, it fits comfortably in systems that require consistent, high-level performance day after day.

Whether the task is reinforcing spoken word in a house of worship or delivering background music along a theme-park walkway, the JBL CBT 70JE-1 helps the main array cover the audience evenly, maintain tonal balance, and reach deeper into the low-frequency range without adding complicated processing or extra rack gear.

• Designed specifically to mate with the JBL CBT 70J-1 column speaker
• Extends bass response down to 45 Hz for fuller sound
• Four 5 inch low-frequency drivers add punch and headroom
• Built-in crossover network integrates the extension with the main array
• Improves pattern control for more even coverage across seating areas
• Handles up to 500 W RMS for robust performance
• Enclosure made from fiberglass-reinforced ABS for long-term durability
• Supplied coupler plate simplifies alignment and mounting
• Suited to auditoriums, lecture halls, stadium concourses, and outdoor venues