JBL CBT 70J-1 - 500W 4 x 5-inch Passive 2-Way IP55-Rated Column Loudspeaker with 150 x 25/45-Degree Coverage in Black Finish

The JBL Professional CBT 70J-1 is a cutting-edge passive column loudspeaker designed to deliver exceptional sound quality with superior pattern control. Incorporating JBL's patent-pending Constant Beamwidth Technology (CBT), the CBT 70J-1 offers an innovative solution to the common challenges of vertical beaming and lobing seen in traditional column speakers. This advanced technology provides consistent vertical coverage across the entire frequency range, ensuring a uniform listening experience throughout the coverage area. Additionally, the speaker's J-shaped physical design creates an asymmetrical vertical coverage pattern, sending more sound to the far reaches of the listening space while ensuring more even front-to-back SPL levels.

The CBT 70J-1 is a versatile loudspeaker, ideal for a wide variety of venues including performance auditoriums, lecture halls, transit centers, racetracks, theme parks, and multipurpose spaces. The speaker's slim and compact design - measuring 70 cm (27.6 inches) tall and just 9.3 cm (3.7 inches) wide - ensures that it fits seamlessly into virtually any architectural setting. With a frequency range of 60 Hz to 20 kHz and a coverage angle of 25° in narrow mode and 45° in broad mode, the CBT 70J-1 delivers clear and consistent sound to both medium-throw and long-throw distances. Its vertical coverage can be adjusted, providing tailored sound dispersion that perfectly fits the needs of the application.

Designed for both indoor and outdoor use, the CBT 70J-1 features weather-treated drivers and a robust fiberglass reinforced ABS cabinet, which is UV-resistant and ensures durability in even the harshest environments. The aluminum grille is painted to resist rust, and the speaker is IP-55 rated when installed with the optional MTC-PC2 terminal panel cover, making it an excellent choice for outdoor installations in public spaces or entertainment venues. The speakers are equipped with 16 high-frequency drivers and 4 low-frequency drivers that deliver impressive sound clarity and power, even in large spaces.

The speaker features a powerful, yet lightweight dual neodymium magnet system in the low-frequency drivers, ensuring high output and consistent performance. Copper-capped pole pieces further reduce distortion at high drive levels, providing clean, extended high frequencies. For additional protection, Dynamic SonicGuard overload protection is built into the high-frequency section, preventing damage from overpowering by limiting low-frequency excursion dynamically. This ensures optimal performance, maximizing both music clarity and speech intelligibility.

For easy installation, the CBT 70J-1 comes with a swivel (pan)/tilt wall-mount bracket that offers flexible mounting options, with continuous variable left-right swivel aiming and adjustable tilt for precise sound positioning. The speaker also features ten threaded M6 mounting points, which allow for suspension or attachment to third-party mounting brackets, offering versatility in various installation scenarios. With these features, the speaker is suitable for a wide range of mounting configurations in both permanent and portable applications.

The CBT 70J-1 offers a range of power and impedance options to suit different system configurations. It has a built-in 70V/100V transformer with several tap settings for flexible use in distributed systems, as well as an 8-ohm direct capability for traditional systems. The speaker is capable of delivering impressive SPLs, reaching 125 dB continuous average in speech mode and 120 dB continuous average in music mode in narrow coverage mode, making it ideal for larger spaces where high-output sound is needed. The high-frequency drivers are also shielded for use in proximity to CRT monitors, ensuring minimal interference in sensitive environments.

Whether for a lecture hall, outdoor public space, or entertainment venue, the JBL Professional CBT 70J-1 provides superior performance, reliability, and flexibility. Its combination of cutting-edge technology, robust design, and adjustable coverage options makes it an excellent choice for a wide range of applications requiring high-quality sound with even coverage.

Features

• Patented Constant Beamwidth Technology for consistent vertical coverage and reduced lobing
• Asymmetrical progressive-gradient vertical coverage for more even sound distribution from front to back
• Frequency range of 60 Hz to 20 kHz with 25° narrow and 45° broad vertical coverage options
• Wide horizontal coverage of 150° for broad sound dispersion across the listening area
• Dynamic SonicGuard overload protection for high-frequency drivers to ensure clear sound and prevent damage
• Weather-treated components and IP-55 rating for outdoor installations with optional MTC-PC2 panel cover
• Lightweight and durable dual neodymium magnet system with copper-capped pole pieces for reduced distortion and increased power handling
• Swivel (pan) / tilt wall-mount bracket included for flexible installation with adjustable aiming and tilt
• 10 threaded M6 mounting points for easy suspension or third-party mounting bracket compatibility
• EN54-24 certified for life safety applications (when installed with MTC-PC2 terminal panel cover)
• Dimensions: 27.4 x 6.7 x 9.3 inches, Weight: 21 lbs
• Available in black or white finish
• Included accessories: Swivel (pan)/tilt wall bracket, MTC-PC2 terminal panel cover
• Optional accessories: MTC-CBT-SMB1 Stand-Mount Bracket, MTC-CBT-FM2 flush-mount low-profile wall-mount bracket

Specifications

System

• Components: Four 130 mm (5 in) LF drivers, Sixteen 25 mm (1 in) HF drivers
• Frequency Range: 60 Hz - 20 kHz
• Coverage:
  • Narrow Mode: 25° (2 kHz - 16 kHz, ±10°)
  • Broad Mode: 45° (750 Hz - 16 kHz, ±10°)
  • Horizontal: 150° (500 Hz - 8 kHz, ±20°)
• Sensitivity (2.83V@ 1m):
  • Narrow (speech mode): 98 dB (1 kHz - 8 kHz)
  • Narrow (music mode): 93 dB (300 Hz - 18 kHz)
  • Broad (speech mode): 96 dB (1 kHz - 8 kHz)
  • Broad (music mode): 92 dB (300 Hz - 18 kHz)
• Nominal Impedance: 8 ohms
• Power Capacity:
  • 500 W (2000 W peak), 2 hrs
  • 350 W (1400 W peak), 100 hrs
• Max SPL:
  • Narrow (speech mode): 125 dB continuous average (131 dB peak)
  • Narrow (music mode): 120 dB continuous average (126 dB peak)
  • Broad (speech mode): 123 dB continuous average (129 dB peak)
  • Broad (music mode): 119 dB continuous average (125 dB peak)

Transducers

• Low Frequency Drivers: 4 pcs, 130 mm (5 in) drivers, dual magnet neodymium, 38 mm (1.5 in) voice coil, damped blended textile surround, coated diaphragm for moisture, UV, and salt resistance, shielded
• High Frequency Drivers: 16 pcs, 25 mm (1 in) drivers, dual magnet neodymium, encased magnet and coated diaphragm for moisture, UV, and salt resistance, shielded

Enclosure

• Fiberglass reinforced ABS cabinet, painted aluminum grille
• Outdoor Capability: IP-55 rated, per IEC529, when installed with optional MTC-PC2 panel cover. UV, moisture, and 200-hour ASTM G85 acid-air/salt-spray resistant.
• Colors: Black or White (WH)
• Insert Points: Ten M6 swivel (pan)/tilt insert points on back panel
• Mounting: Included swivel (pan)/tilt wall bracket provides continuously variable +/-80° left-right swivel aiming (at no up/down tilt), continuously adjustable +/-15° tilt, as well as 5° fixed increment points. Ten threaded mounting points located on back panel of cabinet conform to industry standard rectangular 127 x 70 mm (5.0 x 2.75 in) pattern for OmniMount 60.0 and other compatible third-party brackets. Threaded mounting points can be utilized for suspension.
• Dimensions: 27.4 x 6.7 x 9.3 inches
• Weight: 21 lbs
• Included Accessories: Swivel (pan) / tilt wall bracket, MTC-PC2 terminal panel cover
• Optional Accessories: MTC-CBT-SMB1 Stand-Mount Bracket for use with 35 mm heavy-duty speaker stand, MTC-CBT-FM2 flush-mount low-profile wall-mount bracket