JBL Cbt 70JE-1 Extension For Cbt 70J-1 Column Spk, Blk
Description
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 studio monitoring setups and control room 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 for precise mix translation across the listening space.
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°), allow you to shape your monitoring environment and optimize stereo imaging across different mixing positions and room configurations.
Design & Build
The extension weighs 45 lbs and features a reinforced grille design for durability in demanding studio 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 that maximize your monitor placement options in tight studio spaces.
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 professional mixing and mastering suites, broadcast studios, and post-production facilities demanding precise directional control with extended low-end capability for critical listening and accurate acoustic coupling in the control room.
More Information
| Condition | New |
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Reviews
At a Glance
The JBL CBT 70JE-1 extends the CBT 70J-1 column speaker system with enhanced bass extension to 45 Hz and precise vertical pattern control, making it a powerful tool for capturing and monitoring live sound in theaters, houses of worship, and fixed installations. Its switchable vertical coverage modes and reinforced design allow you to tailor acoustic response to the room's geometry and maintain clean, controlled patterns across 400 Hz. This extension is built for professional live-sound production and venue installs, not studio recording.
Who This Is For
Great for
- ✓ Live Performance
- ✓ Theater/Venue Sound
- ✓ Houses of Worship
- ✓ Conference/Install Audio
Not the best pick for
- – Home Recording
- – Practice
Skill level: Professional
Frequently Asked Questions
What does the CBT 70JE-1 extension do, and do I need the base CBT 70J-1 speaker to use it?
The CBT 70JE-1 is a dedicated extension module that stacks vertically with the CBT 70J-1 base unit to increase overall output, extend bass response to 45 Hz, and enlarge the speaker array's coverage pattern. It cannot function as a standalone speaker; it requires the CBT 70J-1 to operate.
What vertical and horizontal coverage patterns does this extension offer?
The CBT 70JE-1 provides switchable vertical coverage in Narrow Mode (25° ±10°) or Broad Mode (45° ±10°), with a fixed horizontal coverage of 150° (±20°). This flexibility allows you to tailor the pattern to your venue's dimensions and audience placement.
How much does the extension weigh, and how is it mounted?
The CBT 70JE-1 weighs 45 lbs and features twelve M6 mounting points that accept forged shoulder steel eyebolts or swivel clips for secure vertical stacking and suspension rigging. This design enables safe installation in theaters, houses of worship, and other professional venues.
What frequencies and drivers does this extension contain?
The extension houses four 25 mm soft-dome tweeters and eight 125 mm high-power low-frequency drivers with dual-magnet neodymium motors, delivering 500W power handling and a frequency range of 45 Hz to 20 kHz (-10 dB). It maintains precise pattern control down to 400 Hz with substantial off-axis cancellation.
Is this extension suitable for small rooms or home studios?
No; the CBT 70JE-1 is designed exclusively for professional live-sound installations, theaters, houses of worship, and conference venues. It is not intended for home recording or practice applications.
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