JBL
JBL CBT 70JE-1
Best low-frequency extension for professional line array sound systems.
The JBL CBT 70JE-1 is an extension cabinet designed to complement the CBT 70J-1 Line Array Column Speaker, delivering powerful low-frequency output. It features four 130 mm (5 in) low-frequency drivers and a purpose-built crossover network within a durable, fiberglass-reinforced ABS enclosure. With 500W of power handling and high sensitivity, it extends the bass response down to 45 Hz when paired with the CBT 70J-1. The drivers are magnetically shielded and designed for minimal distortion, while the coated cones offer resistance to moisture and UV. The heavy-duty aluminum grille ensures durability for portable use and rust-free outdoor installations.
$855.00
Owner Satisfaction
4.6
/ 5
Category Rank
2277
/ 8447
#2277 in Speakers
Price vs Category Average
-42%
Below average
Components
1305
/ Four mm ( in) LF drivers
Who it's for
- Installers requiring seamless system integration
- Audio professionals seeking richer low-frequency output
- Venue managers needing consistent sound across large spaces
Who should skip it
- Budget-conscious installers avoiding complex wiring setups
- Buyers needing a versatile, standalone audio solution
- Designers working with limited vertical mounting space
Performance breakdown
Low Frequency Extension
Deep bass reach transforms standard column arrays into full-range systems.
Weather Resistance
IP-55 rating ensures reliable performance in challenging outdoor environments.
Structural Durability
Fiberglass-reinforced enclosure withstands the rigors of frequent portable setups.
Pattern Control
Maintains precise sound directionality down to the lower frequency registers.
Power Handling
Robust 500W continuous capacity delivers consistent output for demanding venues.
Installation Versatility
Integrated mounting hardware makes seamless integration with CBT 70J-1 simple.
Key Specs
Components
Four 130 mm (5 in) LF drivers
Frequency Range
45 Hz – 700 Hz
Sensitivity
90 dB full space, 96 dB half-space
Nominal Impedance
8 ohms
Power Capacity
500 W continuous, 2000 W peak
Max SPL
117 dB
Outdoor Capability
IP-55 rated, UV and moisture resistant
Mounting
Coupler plate for CBT70J-1, M6 suspension points
Features
- Extends pattern control to 400 Hz for ± 20° control
- Extends bass response to 45 Hz when combined with CBT 70J-1
- Durable fiberglass-reinforced ABS enclosure
- Lightweight dual magnet neodymium motors
- Magnetically shielded drivers
- Coated cones for moisture and UV resistance
- Heavy-duty aluminum grille for portability and outdoor use
What customers say
Customers consistently praise the JBL CBT 70JE 1 for its exceptional sound quality, noting its clear and powerful audio output in various professional settings. Many highlight its robust construction and dependable performance, making it a trusted component for sound installations. Users appreciate how it enhances existing systems, delivering consistent, high fidelity sound that meets demanding requirements. Its ability to integrate seamlessly and perform reliably under continuous use stands out as a significant advantage, reinforcing its reputation as a solid investment for audio professionals seeking superior acoustic solutions.
Know before you buy
No, the CBT 70JE-1 is an extension cabinet specifically designed to be paired with the JBL CBT 70J-1. It does not contain the high-frequency drivers necessary for full-range audio reproduction.
Yes, when paired with the CBT 70J-1, the 70JE-1 extends the low-frequency response down to 45 Hz. It also increases the vertical pattern control, helping to maintain consistent sound quality down to 400 Hz.
Yes, it is built for the outdoors with an IP-55 rating. The enclosure is made of weather-resistant, fiberglass-reinforced ABS, and the drivers feature moisture-resistant coated cones and a heavy-duty aluminum grille.
The unit comes with a dedicated coupler plate designed to securely join the 70JE-1 to the CBT 70J-1. It also includes M6 suspension points if you need to mount the combined array to a wall or ceiling.
The cabinet has a continuous power handling capacity of 500W and a peak capacity of 2000W at 8 ohms. You should ensure your amplifier can comfortably provide this power to maintain the system's 117 dB maximum SPL.
Yes, the four 130 mm low-frequency drivers are magnetically shielded. This makes the unit safer to use in environments where sensitive electronic equipment might be located nearby.
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