JBL Professional 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)

Features

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.

Downloads

Specifications

	Version	Size	Uploaded
MTC-CBT-70T Spec Sheet updated: Oct 2020		1.74 MB	Oct 2020
CBT 70J-1 Spec Sheet version B, updated: Mar 2026	B	2.3 MB	Mar 2026

Brochures

	Language	Size	Uploaded
CBT Brochure updated: Oct 2020		973 KB	Oct 2020
Loudspeakers for Sports Facilities updated: Jul 2024		5.71 MB	Jul 2024

CAD Drawings

	Size	Uploaded
CBT 3D DWG Drawing updated: Jul 2025	4.11 MB	Jul 2025
CBT 3D DXF Drawings updated: Oct 2020	8.14 MB	Oct 2020
CBT 2D DXF/PDF Drawing updated: Oct 2020	1.23 MB	Oct 2020

Compliances

	Size	Uploaded
CBT-1 Series Declaration of Conformity updated: Oct 2019	144 KB	Oct 2019

Software

	Version	Size	Uploaded
CBT Calculator version 1.3.0.1, released: Aug 2023	1.3.0.1	3.66 MB	Aug 2023

Tech Notes

	Size	Uploaded
Tech Note: Volume 1, #35 updated: Oct 2020	2.23 MB	Oct 2020

Information Documents

	Size	Uploaded
CBT Cabinet Painting Instructions updated: Oct 2019	17.2 KB	Oct 2019

Images

	Size	Uploaded
CBT Family Hi-Res Image updated: Oct 2019	237 KB	Oct 2019
CBT 70J Hi Res Image updated: Oct 2020	103 KB	Oct 2020

Install Guides

	Size	Uploaded
MTC-CBT-FMx Flush-Mount Wall Brackets for CBT Speakers updated: Feb 2026	440 KB	Feb 2026
MTC-PC2 & MTC-PC3 Installation updated: Apr 2025	58.7 KB	Apr 2025
CBT 70J-1/70JE-1 Bracket Installation Guide updated: Oct 2020	491 KB	Oct 2020
CBT Stand-Mount Bracket Guide updated: Oct 2020	476 KB	Oct 2020
CBT 70J-1 Wall Bracket PDF updated: Oct 2020	31.8 KB	Oct 2020
CBT Quick Start Guide updated: Oct 2020	1.15 MB	Oct 2020

Ease Data

	Size	Uploaded
CBT 70J-1 EASE File updated: Dec 2020	1.85 MB	Dec 2020

CLF Files

	Size	Uploaded
CBT 70J CLF Files updated: Dec 2020	424 KB	Dec 2020

Application Guides

	Language	Size	Uploaded
Constant Beamwidth Technology – CBT Series Passive Controlled-Coverage Columns updated: Oct 2022		8.48 MB	Oct 2022

Faqs

	Size	Uploaded
CBT Frequently Asked Questions updated: Oct 2020	193 KB	Oct 2020

Accessories

	Size	Uploaded
CBT Suspension Bracket updated: Oct 2020	305 KB	Oct 2020

Speaker Tunings

	Version	Size	Uploaded
Commercial, CBT, and AWC Tunings 220616 version A, updated: May 2023	A	557 KB	May 2023

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Parts & Service

Specifications

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; Min Imp: 4.0 ohms @ 1kHz, 5.4 ohms @ 225Hz
Power Capacity	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