JBL CBT 70JE-1 Extension for CBT 70J-1 Column Speaker, Black

The CBT 70JE-1 is a dedicated extension module that expands the vertical coverage and output capability of the CBT 70J-1 column speaker system. Designed for professional installations requiring extended pattern control and deeper bass response, this extension integrates seamlessly with the base unit to create a cohesive array with enhanced directivity and acoustic reach.

Acoustic Performance

This extension delivers extended bass response down to 45 Hz and maintains precise pattern control to 400 Hz for ±20° control, with substantial off-axis cancellation extending to 200 Hz. The switchable vertical coverage modes—Narrow Mode 25° (±10°) or Broad Mode 45° (±10°)—combined with 150° horizontal coverage (±20°), provide flexible deployment across varying venue requirements.

Design & Build

The extension weighs 45 lbs and features a reinforced grille design for durability in demanding environments. Twelve M6 mounting points accept forged shoulder steel eyebolts or swivel clips, enabling secure suspension alongside the primary speaker unit for vertically stacked configurations.

Key Features

• Four 25 mm (1 in) soft dome tweeters
• Eight 125 mm (5 in) high-power LF drivers
• Dual magnet neodymium motors with 38 mm (1.5 in) diameter voice coils
• 500W power handling
• Frequency range (-10 dB): 45 Hz – 20 kHz
• Extended bass response to 45 Hz
• Pattern control to 400 Hz for ±20° control
• Vertical coverage switchable: Narrow 25° (±10°) or Broad 45° (±10°)
• Horizontal coverage 150° (±20°)
• Twelve M6 mounting points for eyebolts or swivel clips
• Weight: 45 lbs
• Stronger reinforced grille design

The CBT 70JE-1 extension transforms the base CBT 70J-1 into a more powerful, larger-coverage array ideal for theaters, houses of worship, conference centers, and other installations demanding precise directional control with extended low-end capability.