CBT 70J-1

Constant Beamwidth Technology™ Two-Way Line Array Column with Asymmetrical Vertical Cove

CBT 70J-1
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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)


  • 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-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
  • Swivel (pan) / tilt wall bracket included.


  Version Language Size Uploaded
file type icon MTC-CBT-70T Spec Sheet
updated: Okt 2020
    1,74 MB Okt 2020
file type icon CBT 70J-1 Spec Sheet
updated: Okt 2020
    2,17 MB Okt 2020
file type icon CBT Brochure
updated: Okt 2020
    973 KB Okt 2020
CAD Drawings
file type icon CBT 3D DXF Drawings
updated: Okt 2020
    8,14 MB Okt 2020
file type icon CBT 2D DXF/PDF Drawing
updated: Okt 2020
    1,23 MB Okt 2020
file type icon CBT-1 Series Declaration of Conformity
updated: Okt 2019
    144 KB Okt 2019
platform icon CBT Calculator
version, updated: Aug 2023     3,66 MB Aug 2023
Tech Notes
file type icon Tech Note: Volume 1, #35
updated: Okt 2020
    2,23 MB Okt 2020
Install Guides
file type icon MTC-PC2 & MTC-PC3 Installation
updated: Sep 2019
    42,5 KB Sep 2019
file type icon MTC-CBT-FM1/FM2 Flush-Mount Wall Brackets for CBT Speakers
updated: Okt 2020
    297 KB Okt 2020
file type icon CBT Quick Start Guide
updated: Okt 2020
    1,15 MB Okt 2020
file type icon CBT 70J-1/70JE-1 Bracket Installation Guide
updated: Okt 2020
    491 KB Okt 2020
file type icon CBT Stand-Mount Bracket Guide
updated: Okt 2020
    476 KB Okt 2020
file type icon CBT Flush-mount Bracket
updated: Okt 2020
    338 KB Okt 2020
file type icon CBT 70J-1 Wall Bracket PDF
updated: Okt 2020
    31,8 KB Okt 2020
Information documents
file type icon CBT Cabinet Painting Instructions
updated: Okt 2019
    17,2 KB Okt 2019
file type icon CBT Family Hi-Res Image
updated: Okt 2019
    237 KB Okt 2019
file type icon CBT 70J Hi Res Image
updated: Okt 2020
    103 KB Okt 2020
Ease Data
file type icon CBT 70J-1 EASE File
updated: Dez 2020
    1,85 MB Dez 2020
CLF Files
file type icon CBT 70J CLF Files
updated: Dez 2020
    424 KB Dez 2020
Application Guides
file type icon Loudspeakers for Sports Facilities
en updated: Mai 2021
  en  5,71 MB Mai 2021
file type icon Constant Beamwidth Technology – CBT Series Passive Controlled-Coverage Columns
en updated: Okt 2022
  en  8,48 MB Okt 2022
Speaker Tunings
file type icon Commercial, CBT, and AWC Tunings 220616
version A, updated: Mai 2023
  557 KB Mai 2023
file type icon CBT Frequently Asked Questions
updated: Okt 2020
    193 KB Okt 2020
file type icon CBT Suspension Bracket
updated: Okt 2020
    305 KB Okt 2020

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Parts & Service


Drivers Four 130 mm (5 in) LF drivers Sixteen 25 mm (1 in) HF drivers
Frequency Range (-10dB) 60 Hz – 20 kHz
Coverage Angle Vertical: Switchable, Narrow Mode: 25° (±10°), Broad Mode: 45° (±10°), Horizontal: 150° (±20°)
Sensitivity 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)
Impedance 8 ohms
Power Rating 500 W (2000 W peak), 2 hrs 350 W (1400 W peak), 100 hrs
Maximum SPL (1m) 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
Outdoor Capability IP-55 rated, per IEC529, when installed with optional MTC-PC2 panel cover. UV, moisture and 200-hr ASTM G85 acid-air/salt-spray resistant.
Color Black or white (-WH)
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
Optional Accessories MTC-PC2 terminal panel coverMTC-CBT-SMB1 Stand-Mount Bracket for use with 35 mm heavy duty speaker stand MTC-CBT-FM2 flush-mount low-profile wall-mount bracket



HARMAN Professional Solutions:

CBT 70J-1

Constant Beamwidth Technology™ Two-Way Line Array Column with Asymmetrical Vertical Cove