JBL CBT50LA LS Specsheet

CBT50LA-LS_specsheet JBL - Manuals+

User Manual: JBL JBL CBT 50LA-LS | Line Array Column Loudspeaker with EN54:24 Certification

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CBT 50LA-LS

Constant Beamwidth Technology™
Line Array Column Loudspeaker
with Eight 50 mm (2in) Drivers

Key Features:
Patent-pending Constant Beamwidth
Technology™ provides constant
directivity up to the highest frequencies
and reduces out-of-coverage lobing.
EN54-24 Compliant (when installed with
included MTC-PC2 panel cover).
Switchable voicing provides flat response
in music mode or mid-range presence
peak in speech mode.
Dynamic SonicGuard™ overload
protection
Built-in 70V/100V transformer, plus
8 ohm direct capability.
Swivel (pan) / tilt wall bracket included.

Overview:
The CBT 50LA-LS, with Constant Beamwidth Technology™, represents a breakthrough in pattern control, utilizing analog
delay beamforming and amplitude tapering to accomplish consistent vertical coverage without the narrow vertical beaming
and out-of-coverage lobing that are typical of straight form-factor passive column speakers.
The slim, compact design fits well into virtually any architectural decor. The combination of superb sound quality, excellent
pattern control, and compact (53 cm [20.8 in] tall by 10 cm [3.9 in] wide) design makes CBT 50LA-LS ideal for a wide variety
of applications, such as retail stores, concourses, transit spaces, fill applications, conference rooms, architectural spaces,
audio for video, lecture halls, and other applications where such a combination is desired.
The voicing can be set to match the application through the Music/Speech switch, conveniently located on the side of the
cabinet. 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.
The drivers feature dual neodymium magnets for light weight. Copper-capped pole pieces lower both the driver inductance
and the flux modulation. This increases high frequency extension and reduces distortion at high drive levels. Butyl rubber
surrounds provide long life even in high humidity environments. The drivers are shielded.
Dynamic SonicGuard™ minimizes distortion at high drive levels by limiting low frequency excursion dynamically.
This maximizes clarity at high drive levels while protecting the drivers from damage due to overpowering.
A swivel (pan) / tilt wall-mount bracket is included and ten M6 inserts on the back panel fit the spacing of common
mounting brackets, or can be utilized to suspend the speaker using M6 forged shoulder steel eyebolts, providing versatility
of installation.
CBT 50LA-LS can be installed either indoors or outdoors. The drivers are weathertreated, the fiberglass reinforced ABS
cabinet with UV resistant paint is excellent for outdoor applications, external screws are stainless steel, and the painted
aluminum grille resists rusting in the harshest conditions.
Available in black or white (-WH).

CBT 50LA-LS Line Array Column Loudspeaker with Eight 50 mm (2 in) Drivers

Specifications:
Components: Eight 50 mm (2 in) Full-Range
Frequency Range (-10 dB)1: 120 Hz – 20 kHz
20° (1.5 kHz - 16 kHz, ±10°)
Coverage Pattern: Vertical:
Horizontal: 150° (ave, 1 kHz – 4 kHz, ±20°)
Coverage Angle:

Vertical:
Horizontal:

4000 Hz
18°
140°

2000 Hz
32°
210°

1000 Hz
55°
260°

500 Hz
100°
260°

Sensitivity (1W @ 1m)1: 93 dB (speech mode, 2 kHz - 14 kHz); Sensitivity (1W @ 4m): 81 dB SPL
(speech mode, 2 kHz - 14 kHz)
89 dB (music mode, 300 Hz - 18 kHz); Sensitivity (1W @ 4m): 77 dB SPL
(music mode, 300 Hz - 18 kHz)
Power Capacity 150W (600W peak), 2 hrs
(8 ohm setting)2: 100 W (400W peak), 100 hrs
Max SPL (1m)3: Speech mode: 115 dB cont ave (121 peak); Maximum SPL (@ 4m): 103 dB cont ave (109 peak)
Music mode: 111 dB cont ave (117 peak); Maximum SPL (@ 4m): 99 dB cont ave (105 peak)
Nominal Impedance: 8 ohms (in bypass mode) – Taps are: 667 ohms (7.5W@70V; 15W@100V tap), 333 ohms
(15W@70V; 30W@100V tap), 167 ohms (30W@70V; 60W@100V tap), 83 ohms (60W@70V;
N/C@100V tap)
4
70V/100V Transformer Taps : 60W, 30W, 15W, (7.5W at 70V only), and 8 thru, via switch
Enclosure: Fiberglass reinforced ABS cabinet (UL94-5VB and UL94-5VA flammability-rated), 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.
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 degree left-right
swivel aiming (at no up/down tilt -- see Bracket Guide for maximum swivel range at various
up/down tilt angles), continuously adjustable ±15 degree tilt, as well as 5 degree fixed
increment points within the range. Ten threaded mounting points located on back panel
located on back panel conform to industry standard rectangular 108 x 51 mm (4.25 x 2.0 in)
pattern for OmniMount® 30.0 and other compatible third-party brackets. Threaded mounting
points can be utilized for suspension.
Safety Agency: EN54-24:2008 certified (Certificate No. 0359-CPR-00238), when installed with MTC-PC2
terminal panel cover. In accordance with the requirements of IEC60849/EN60849.
Dimensions (H x W x D): 528 x 99 x 153 mm (20.8 x 3.9 x 6.0 in)
Net Weight: 4.1 kg (9.0 lb)
Included Accessories: Swivel (pan) / tilt wall bracket
MTC-PC2 terminal panel cover
Optional Accessories: MTC-CBT-FM1 flush-mount low-profile wall-mount bracket
MTC-CBT-SMB1 Stand-Mount Bracket for use with 35 mm speaker stand
Full space
IEC standard, full bandwidth pink noise with 6 dB crest factor.
3
Calculated based on power rating and measured sensitivity, exclusive of power compression.
4 Per EN54-24 Components of voice alarm system - loudspeakers 70V/60W (35V RMS, 70V peak), 100V/60W (50V RMS, 100V peak)
1

2

JBL continually engages in research related to product improvement.
Changes introduced into existing products without notice are an expression of that philosophy.

CBT 50LA-LS Line Array Column Loudspeaker with Eight 50 mm (2 in) Drivers
Frequency Response:
100

316

90

100

80

31.6

70

10

60
20

100

1000

10000

3.16
20000

1000

10000

20000

Frequency (Hz)

Ohms

SPL (dB)

“Music” Mode (solid); “Speech” Mode (dotted), 1W, 1m, and Impedance:

Beamwidth
-6 dB Beamwidth (degrees)

360

100

Horizontal
Vertical
10
20

100

Frequency (Hz)

20

100

10

10

0
20

100

1000

Frequency (Hz)

10000

Directivity Factor (Q)

Directivity Index (DI), dB

Directivity, Q

1
20000

Horizontal Off-Axis Frequency Response

CBT 50LA-LS Line Array Column Loudspeaker with Eight 50 mm (2 in) Drivers
Horizontal 1/3 Octave Polars

0°
330°

0

0°

30°

330°

-6

0

30°

-6

300°

60°

300°

60°

200 Hz
270°

90°

250 Hz
315 Hz

8 kHz
270°

90°

240°

120°

210°

0°
0

One-Third Octave Contributions to Maximum SPL (per EN54-24):

30°

-6

300°

150°
180°

180°

330°

120°

210°

150°

12.5 kHz
16 kHz

400 Hz
240°

10 kHz

60°
500 Hz

270°

90°

630 Hz
800 Hz
1 kHz

240°

120°

210°

150°
180°

Contribution of each mid-range one-third-octave frequency band to the SPL
(per EN54-24) when system is driven to Rated Maximum SPL (111 dB @ 1m;
99 dB @ 4m - in Music mode) using specified broadband pink-noise signal,
60W tap setting, 1m (Contribution figures: 500 Hz = 61 dB; 630 Hz = 63 dB;
800 Hz = 63 dB; 1000 Hz =60 dB; 1250 Hz = 63 dB; 1600 Hz =63 dB;
2000 Hz =62 dB; 2500 Hz =62 dB; 3150 Hz =63 dB; 4000 Hz = 62 dB).

0°
330°

0

30°

-6

300°

60°
1.25 kHz

270°

90°

1.6 kHz
2 kHz
2.5 kHz

240°

120°

210°

150°
180°

0°
330°

0

30°

-6

300°

60°
3.15 kHz

270°

90°

4 kHz
5 kHz
6.3 kHz

240°

120°

210°

150°
180°

CBT 50LA-LS Line Array Column Loudspeaker with Eight 50 mm (2 in) Drivers
Vertical1/3
1/3 Octave
Octave Polars
Vertical
Polars
90°
120°

90°

60°

120°

150°

30°

60°

150°

30°

200 Hz
180°

-6

0°

0

250 Hz
315 Hz

3.15 kHz
180°

-6

0

0°

210°

330°

240°

330°

300°

240°

60°

120°

300°
270°

270°
90°
120°

90°

150°

30°

60°

150°

30°

500 Hz
180°

-6

0°

0

630 Hz
800 Hz

8 kHz
180°

-6

0

0°

210°

210°

330°

60°

150°

30°
1.25 kHz

180°

-6

0

0°

1.6 kHz
2 kHz
2.5 kHz

210°

330°

240°

300°
270°

300°
270°

90°
120°

330°

240°

300°
270°

10 kHz
12.5 kHz
16 kHz

1 kHz

240°

5 kHz
6.3 kHz

400 Hz
210°

4 kHz

CBT 50LA-LS Line Array Column Loudspeaker with Eight 50 mm (2 in) Drivers
Dimensions:

Dimensions
in mm (in)
Dimensions:
Dimensions in mm (in)

51 [2.0]

153 [6.0]

99 [3.9]

49 [1.9]

108 [4.25]

108 [4.25]
528 [20.8]
108 [4.25]

108 [4.25]

M6x1.0P (10 places)

Wall Bracket

Ø7 [Ø0.28]

51 [2.0]

183 [7.2]

88 [3.5]
Ø6.5 [Ø0.26]

Tilt Angle Adjustment:
Slot ( ±15°, continuous )
Pre-Set Angles ( 5° increments )

215 [8.5]

177 [7.0]
Toward
Loudspeaker

Loudspeaker-Mount
Section

Toward
Wall

Assembled Bracket

Wall-Mount
Section

JBL Professional
8500 Balboa Boulevard, P.O. Box 2200
Northridge, California 91329 U.S.A.
© Copyright 2013 JBL Professional
www.jblpro.com

CBT50LA-LS
10/13



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