JBL Cbt 70JE-1 Extension For Cbt 70J-1 Column Spk, Blk B-Stock
In stock
- SKU
- CBT-70JE-1-B
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 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.
More Information
| Condition | Refurbished |
|---|
Reviews
At a Glance
The JBL CBT 70JE-1 extension adds four 25 mm tweeters and eight 125 mm drivers to the CBT 70J-1 base unit, delivering extended bass to 45 Hz and switchable vertical coverage modes (25° narrow or 45° broad) for tight, directional coverage. Designed for install and theater work rather than studio recording, this extension is not a home-studio tool but serves sound systems where precise pattern control and reinforced reliability matter.
Who This Is For
Great for
- ✓ Live Performance
- ✓ Install Audio
- ✓ Theater
- ✓ Houses of Worship
Not the best pick for
- – Portable PA
- – Home Recording
Skill level: Professional
Frequently Asked Questions
What does B-Stock mean for this speaker?
B-Stock means the CBT 70JE-1 is fully functional with no defects in performance, but may have minor cosmetic imperfections on the grille or cabinet. All acoustic and electrical specs are identical to new.
Does this extension work as a standalone speaker?
No, the CBT 70JE-1 is a dedicated extension module designed to stack with the CBT 70J-1 base unit only. It integrates seamlessly vertically to expand coverage and output.
What are the vertical coverage options?
The extension offers switchable vertical coverage: Narrow Mode at 25° (±10°) or Broad Mode at 45° (±10°), with horizontal coverage fixed at 150° (±20°). This flexibility lets you choose pattern based on venue layout.
How low does this extension reach in bass?
The CBT 70JE-1 extends bass response to 45 Hz at -10 dB, with precise pattern control maintained down to 400 Hz for ±20° coverage, making it suitable for full-range theater and worship installations.
How is it mounted and suspended?
Twelve M6 mounting points accept forged shoulder steel eyebolts or swivel clips, allowing secure vertical stacking and suspension alongside the primary speaker unit in flown or stacked configurations.
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