The JBL CBT 70J-1 line array column speaker with asymmetrical vertical coverage and Constant Beamwidth Technology™ is fitted with sixteen x 1” soft dome tweeters and four 125 mm (5 in) high-power LF drivers, arranged coaxially. It’s designed for use on low impedance loudspeaker circuits and is rated at 350W at 8 Ohms.

Finished in black (CBT 70J-1). Also available in white (CBT 70J-1-WH).

The design of the slim, compact CBT 70J-1 represents a breakthrough in pattern control consistency, utilizing complex analogue delay beam-forming and amplitude tapering to accomplish superior, consistent vertical coverage without the narrow vertical beaming and out-of-coverage lobing that are typical of straight form-factor column speakers.

Constant Beamwidth Technology is combined with a physical J-shaped curving, resulting in a very well controlled progressive line array with asymmetrical vertical coverage. The asymmetrical coverage produces a higher concentration of sound with a tighter pattern from the upper half of the array and a lower concentration of sound with a broader vertical pattern from the lower half of the array. This sends more sound toward the far area of the room than to the near area of the room, resulting in more even front-to-back SPL levels than would be the case from a traditional speaker or column that projects symmetrically in the vertical plane.

The two-way coaxial design provides a wide 60 Hz – 20 kHz bandwidth and the low-diffraction baffle eliminates frequency response irregularities. The thick, heavy-duty aluminium grille stands up to portable/event applications while allowing for rust-free installation outdoors. The 70 cm (27.6 in) tall line array height provides consistent pattern control throughout the intelligibility band, making the CBT 70J-1 work well in difficult acoustic environments.

Innovative coverage adjustability allows switching between broad and narrow vertical coverage settings for versatility, easily switched in-situ whilst the voicing can be switched between Music/Speech as required, with the Speech setting producing a mid-range presence for clear, intelligible speech even at the longest throw distances.

Low frequency drivers are lightweight dual magnet neodymium motors with 38 mm (1.5 in) diameter voice coils. The dual magnet system provides maximum flux in a compact package. The magnet structure is magnetically shielded and the pole tips are magnetically saturated for lower flux modulation and minimum distortion. The 16 mm (0.63 in) long coil provides high linear drive and high power handling in a compact driver. The LF drivers feature damped blended textile surrounds and coated sealed paper cones found in high performance large format drivers.

The high frequency driver features a dual magnet neodymium structure for maximum sensitivity. The tweeter is encased for weather resistance. The drivers are magnetically shielded to allow close placement CRT monitors.

Both drivers feature coated diaphragm materials to provide moisture, UV and salt resistance for outdoor capability.

Dynamic SonicGuard™ protection on the high frequency section minimizes distortion at high drive levels to maximise music clarity and speech intelligibility at high drive levels while protecting the drivers from occasional overpowering.

For mounting flexibility, a swivel (pan) / tilt wall-mount bracket is included and ten M6 inserts on the back panel fit common third-party mounting brackets, or can be used to suspend the speaker using forged shoulder steel eyebolts or swivel mounting rings.

CBT 70J-1 can be installed either indoors or outdoors. Drivers are weather-treated, the fiberglass reinforced ABS cabinet is excellent for outdoor applications; external screws are stainless steel and the painted aluminium grille resists rusting in the harshest conditions.

• Asymmetrical vertical coverage sends more sound toward far area of room to make front-to back sound levels more consistent.
• Components: Sixteen 25 mm (1 in) soft dome tweeters and four 125 mm (5 in) high-power LF drivers, arranged coaxially.
• Patent-pending Constant Beamwidth Technology™ provides constant directivity up to the highest frequencies and reduces out-of coverage lobing.
• Vertical pattern coverage switchable between 45° for medium-throw coverage and 25° for long-throw applications.
• Switchable voicing provides flat response in music mode or mid-range presence peak in speech mode.
• Dynamic SonicGuard™ overload protection of HF devices
• Water resistant, rated IP55 when optional MTC-PC2 panel cover is fitted.
• Swivel (pan) / tilt wall bracket included.
• Warranty: 2 Years

Download the current JBL Control Contractor Brochure here: