JBL Professional CBT 70J-1 2-Way Wall Mountable 30W Speaker, Black

Item # JBLCBT70J1 (Part # CBT 70J-1)
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Item Description:
  • 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
  • Constant Beamwidth Technology™ Two-Way Line Array Column with Asymmetrical Vertical Coverage. With improved mounting bracket for enhanced aiming flexibility and stronger grille.

    The CBT 70J-1, with Constant Beamwidth Technology™, represents a breakthrough in pattern control consistency, utilizing complex analog 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. (shown with included grille removed)

    Product Highlights:

    Asymmetrical vertical coverage sends more

    sound toward far area of room to make front-toback 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-ofcoverage 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

    Swivel (pan) / tilt wall bracket included

    Product Features:


    The combination of superior sound quality, excellent pattern control, asymmetrical vertical coverage and compact design makes CBT 70J-1 extremely versatile. It is ideal for applications such as performance auditoriums, lecture halls, classrooms, A/V, transit centers, school stadiums, multipurpose spaces, racetracks, theme parks, and fill applications, among many others.

    Adjustable Coverage to Fit the Application

    The innovative coverage adjustability allows switching between broad and narrow vertical coverage settings to allow matching the coverage and throw requirements of the application. Coverage can be easily switched in-venue with the speaker already installed. This innovation allows a single loudspeaker model to excel in an extremely wide variety of project types.

    User Variable Voicing

    The voicing can be set to match the application through a Music/Speech switch. The Music setting provides flat frequency response, while the Speech setting produces a mid-range presence boost to provide clear, intelligible speech even at the longest throw distances, along with increased midrange sensitivity for higher midrange maximum output capability.


    The 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 by limiting driver excursion dynamically. This maximizes music clarity and speech intelligibility at high drive levels while protecting the drivers from damage due to occasional overpowering.


    A swivel (pan) / tilt wall-mount bracket is included, plus ten M6 inserts on the back panel fit the spacing of common third-party mounting brackets, or can be utilized to suspend the speaker using forged shoulder steel eyebolts or swivel mounting rings, providing installation versatility. 

    Product Specifications:


    Components: Four 130 mm (5 in) LF drivers

    Sixteen 25 mm (1 in) HF drivers

    Frequency Range (-10 dB): 60 Hz – 20 kHz

    Coverage: Vertical (selectable via switch)

    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)

    (music mode) 93 dB (300 Hz - 18 kHz)

    Broad: (speech mode) 96 dB (1 kHz - 8 kHz)

    (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 cont ave (131 peak)

    (music mode) 120 dB cont ave (126 peak)

    Broad: (speech mode) 123 dB cont ave (129 peak)

    (music mode) 119 dB cont ave (125 peak)


    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

    Colors: Black

    Insert Points: 10 M6 swivel (pan)/tilt (16 mm deep) insert points on back panel.

    Mounting: Included swivel (pan)/tilt wall bracket provides continuously variable +/-80 degree left-right swivel aiming (at no up/down tilt -- see Bracket Guide for maximum swivel range at various up/down tilt angles), continuously variable +/-15 degree tilt, as well as 5 degree 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 (H x W x D): 694 x 170 x 237 mm (27.4 x 6.7 x 9.3 in)

    Net Weight: 9.5 kg (21 lb)

    Included Accessories: Swivel (pan) / tilt wall bracket

    JBL Professional CBT 70J-1 Wall Mountable Speaker
    Swivel (pan) / tilt wall bracket
    Authorized JBL Dealer Limited Warranty
    This Kit Includes: