JBL CBT1000 Paging Speaker Instruction Manual
- June 9, 2024
- JBL
Table of Contents
Constant Beamwidth Technology™ High-Output
Two-Way Line Array Column with Adjustable
Vertical Coverage & Tapered Horizontal Waveguide
Instruction Manual
Key Features:
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Vertical pattern coverage individually adjustable with four (4) “Pattern Up” coverage angles and four (4) “Pattern Down” coverage angles for a total of sixteen (16) different coverage combinations, all without the use of external DSP processing.
-
Asymmetrical vertical settings send more sound toward far area of room to make front-to-back sound levels more consistent.
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Components:
• Twenty-four (24) 25 mm (1 in) extra-high- power soft dome tweeters.
• Six (6) 165 mm (6-1/2 in) high-excursion LF drivers arranged coaxially. -
Very high sound levels up to 131 dB (137 dB peaks), depending on the settings.
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Constant Beamwidth Technology™ provides constant directivity coverage and reduces out of coverage lobing.
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Patent-pending Tapered Horizontal Waveguide provides a continuously varying horizontal dispersion (very wide for short-throw, narrower for long-throw) delivering superior coverage in both the front and rear corners of a room and reducing over-splash.
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Wide 45 Hz – 20 kHz frequency response.
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Switchable voicing provides flat response in music mode or mid-range presence peak in speech mode.
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Swivel (pan)/tilt wall bracket included.
Overview:
The CBT 1000 represents the next-generation in pattern control, expanding upon
JBL’s highly successful CBT Constant Beamwidth Technology™ products. Utilizing
patented complex analog beam-forming, the CBT 1000 provides superior and
consistent vertical coverage without the narrow vertical beaming and out-of-
coverage lobing that are typical of straight form-factor column speakers.
The CBT 1000 combines Constant Beamwidth Technology with adjustable vertical
coverage and a tapered horizontal waveguide to increase the versatility of
aiming the coverage of the loudspeaker to more accurately map to the room
geometry in a wide variety of listening spaces. The asymmetrical coverage
settings produce a higher concentration of sound with a tighter pattern from
the upper half of the array, and a lower concentration of sound with a broader
vertical pattern from the lower half of the array. This sends more sound
toward the far area of the room than to the near area of the room, resulting
in more even front-toback SPL levels than would be the case from a traditional
speaker or column that projects symmetrically in the vertical plane.
Additionally, the vertical coverage pattern is individually installer
adjustable though a range of four “Pattern Up” coverage angles and four
“Pattern Down” coverage angles for a total of sixteen different coverage
combinations, all without the use of any external DSP processing. The new
patent-pending Tapered Horizontal Waveguide design provides a continuously
varying horizontal dispersion by providing a very wide angle of dispersion for
the short-throw distances while also providing a narrower horizontal angle of
dispersion for the long-throw distances, providing superior coverage in both
the front and rear corners of a room. The consistent pattern control allows
the CBT 1000 to work well in difficult acoustic environments.
The two-way coaxial design provides a wide 45 Hz – 20 kHz bandwidth. The low-
diffraction baffle eliminates frequency response irregularities that could
otherwise occur due to baffle discontinuities. The thick, heavy-duty aluminum
grille allows for rust-free installation outdoors. At 102 cm (40.2 in) tall
and only 25 cm (9.9 in) wide, the design fits well with virtually any
architectural décor.
Applications
Combining superior sound quality, excellent pattern control, asymmetrical
vertical coverage, continuously variable horizontal dispersion, and compact
design makes the CBT 1000 extremely versatile. It is ideal for applications
such as performance auditoriums, houses of worship, lecture halls, classrooms,
cinema main speakers or very high-output surrounds, multipurpose spaces, A /V,
transit centers, sports facilities, racetracks, theme parks, outdoor
locations, and high-level fill applications, among many others.
Adjustable Coverage to Fit the Application
Vertical pattern coverage settings are set via easy-to-configure headers
located in a covered compartment on the side of the speaker. The innovative
adjustability allows the installer to switch through a range of four (4)
“Pattern Up” coverage angles and four (4) “Pattern Down” coverage angles for a
total of sixteen (16) different coverage combinations. Additionally, the use
of a patent-pending Tapered Horizontal Waveguide provides a continuously
varying horizontal dispersion (very wide for short-throw, narrower for mid-
throw, even more narrow for long-throw) delivering superior coverage in both
the front and rear corners of a room while reducing undesirable over-splash.
These unique features allow the user to more closely match the coverage and
throw requirements to the application, and the coverage selection can be
easily switched in-venue with the speaker already installed. These innovations
allow 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 sensitivities
for higher midrange maximum output capability.
Drivers
The low frequency drivers feature lightweight neodymium motors with 50 mm (2.0
in) diameter voice coils. The magnet system provides maximum flux in a compact
package. The magnet structure is magnetically shielded and the drivers have a
copper cap on the pole to minimize flux modulation and linearize inductance,
resulting in lower distortion and improved frequency response. 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 drivers include neodymium structure for maximum
sensitivity, and feature high power handling, long excursion and large back
enclosures for additional frequency range and output. The tweeter is encased
for weather resistance.
Both drivers feature coated diaphragm materials to provide moisture, UV and
salt resistance for outdoor capability.
SonicGuard™
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.
Bracketry & Insert Points
A two-part swivel (pan) / tilt wall-mount bracket is included. Fourteen (14)
M8 brass inserts are located on the back panel in a spacing pattern that fits
common third-party mounting brackets. In addition, four insert points each are
located on the top and bottom end-caps. These insert points can be utilized to
suspend the speaker using forged shoulder steel eyebolts or swivel mounting
rings, providing installation versatility. Optional brackets include MTC-CBT-
FM3 (in MTC-CBT1K-ACC1 kit) for flush-mounting the back of the speaker to a
wall, and MTC-CBT-SUS3 CBT Series suspension bracket kit.
Outdoor Capability
CBT 1000 can be installed either indoors or outdoors. The drivers are weather-
treated, the fiberglass reinforced ABS cabinet is excellent for outdoor
applications, and the paint is UV resistant. External screws are stainless
steel and the powder coated 1050 aluminum grille resists rust in the harshest
of conditions. The optional MTC-PC2 panel cover with gland nut seals the
terminal compartment from excessive moisture.
Color
Available in black (RAL9004) or White (-WH) (RAL9016).
Specifications:
System:
Components:| Six (6) 165 mm (6.5 in) LF drivers
Twenty-four (24) 25 mm (1 in) HF drivers
Frequency Range (-10 dB)¹:| 45 Hz – 20 kHz
Sensitivity (2.83V@ 1m)¹,²:| 102 dB (at highest sensitivity setting: “Point”
pattern up, “Point” pattern down, “Speech” voicing, in free space)
95 dB (at lowest sensitivity setting: “Medium” pattern up, “Downfill” pattern
down, “Music” voicing in free space)
Nominal Impedance:| 4 ohms (4 ohms above 1 kHz; 8 ohms below 800 Hz)
Power Capacity³:| 1500 W (6000 W peak), 2 hrs
1000 W (4000 W peak), 100 hrs
Maximum Input Voltage:| 65.0 Volts RMS (2 hrs), 130.0 Volts Peak
Max SPL4:| Highest directivity setting: (“Point” pattern up, “Point” pattern
down) with “Speech” voicing:
131 dB continuous average pink noise
134 dB continuous program
137 dB Peak
Highest directivity setting: (“Point” pattern up, “Point” pattern down) with
“Music” voicing:
127 dB continuous average pink noise
130 dB continuous program
133 dB peak
Lowest directivity setting: (“Medium” pattern up, “Downfill” pattern down)
with “Speech” voicing:
128 dB continuous average pink noise
131 dB continuous program
134 dB peak
Lowest directivity setting: (“Medium” pattern up, “Downfill” pattern down)
with “Music” voicing:
124 dB continuous average pink noise
127 dB continuous program
130 dB peak
Vertical Coverage Settings:| Coverage is effective (frequency response
similar) beyond the traditional -6 dB coverage angles. This is especially
useful in
compensating for differences in listening distances. Figures show both the -6
dB and -12 dB coverage angles (at 3 kHz).
Angles are in reference to cabinet aiming axis.
Pattern UP Settings:
“Point”: -6dB @ +7°, -12 dB @ +12°
“Tight”: -6dB @ +9°, -12 dB @ +15°
“Narrow”: -6dB @ +10°, -12 dB @ +20°
“Medium”: -6dB @ +13°, -12 dB @ +24°
Pattern DOWN Settings:
“Point”: -6dB @ -7°, -12 dB @ -12°
“Narrow”: -6dB @ -10°, -12 dB @ -20°
“Broad”: -6dB @ -17°, -12 dB @ -28°
“Downfill”: -6dB @ -20°, -12 dB @ -35°
Horizontal Coverage:| Patent-pending Tapered Horizontal Waveguide continuously
variable.
Long-throw (top) section: 100°
Middle section: 130°
Short-throw (bottom) section: 160°
Recommended High-Pass:| 35Hz, 24 dB/oct or greater
Transducers:
Low Frequency Drivers:| 6 pcs, 165 mm (6.5 in) drivers, lightweight neodymium
motors, 50 mm (2.0 in) diameter voice coils, copper-capped pole
tips to minimize flux modulation and linearize inductance, 16 mm (0.63 in)
long coil for high linear drive and high power
handling, damped blended textile surround, coated cones for moisture, UV and
salt resistance. Magnetically shielded.
High Frequency Drivers:| 24 pcs, 25 mm (1 in) drivers, neodymium, encased
magnet and coated diaphragm for moisture, UV, and salt resistance.
Enclosure:
Enclosure:| Fiberglass reinforced ABS cabinet, powder coated 1050 aluminum
grille
Outdoor Capability:| IP-55 rated, per IEC529, when installed with optional
MTC-PC2 cover. Exceeds Mil Spec 810 for humidity, temperature & UV, ASTM G85
for acid-air/salt-spray (200 hrs).
Colors:| Black (RAL9004) or White (-WH) (RAL9016)
Insert Points:| 14 individual M8 inserts on back panel (20 mm deep) for use
with swivel (pan)/tilt bracket(s), forged-shoulder steel eyebolts, swivel
rings, and after-market third-party brackets, plus 4 individual M8 inserts on
top and 4 on bottom of cabinet end-caps.
Mounting:| Included two-part swivel (pan)/tilt wall bracket provides
continuously variable +/- 45 degree left-right swivel aiming
(at no up/down tilt – see Bracket Guide for maximum swivel range at various
up/down tilt angles), +/- 15 degree tilt in
1 degree fixed increment points. Fourteen (14) 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 legacy
OmniMount® and other compatible third-party brackets. Four (4) threaded mount
points on the top end-cap and four (4) on the bottom end-cap. Threaded
mounting points can be utilized for suspension. (Always use multiple mounting
points.)
Dimensions (H x W x D):| 1020 mm x 250 mm x 345 mm
(40.2 x 9.9 x 13.6 in)
Net Weight (cabinet):| 24.5 kg (54 lbs)
Shipping Weight:| 38.6 kg (85 lbs)
Included Accessories:| Two-piece swivel (pan)/tilt wall bracket
Optional Accessories:| MTC-PC2 terminal panel cover
CBT1K-ACC1 Accessory kit includes:
2 pcs MTC-CBT-FM3 flush-mount brackets
1 pc MTC-CBT-OS3 offset bracket (for CBT 1000+1000E array – works in
conjunction with CBT 1000E’s included
Coupler Plate for locating CBT 1000E extension cabinet above CBT 1000 instead
of below it)
MTC-CBT-SUS3 CBT Series suspension bracket kit (2 pcs included to provide top
and bottom attachment points)
- Full space
- 2.83V @ 1 meter, averaged 2 kHz to 6 kHz; same sensitivity in this range for CBT 1000 alone and CBT 1000+CBT 1000E (for more information see notes in FAQ); Subtract 3 dB for 2.00V @ 1 meter sensitivity.)
- IEC standard, full bandwidth pink noise with 6 dB crest factor.
- 2 kHz – 6 kHz, calculated based on power rating and measured sensitivity, exclusive of power compression.
JBL continually engages in research related to product improvement.
Changes introduced into existing products without notice are an expression of
that philosophy.
Array’s Upper-Half Coverage Pattern Selections
Array’s Lower-Half Coverage Pattern Selections
Coverage Pattern Selection Panel
Located on side of cabinet; covered by plate.
Position the orange headers to select the coverage patterns and Music/Speech
voicing.
Located on side of cabinet; covered by plate. Must remove screws using #1
Phillips head screwdriver, not included.
Position the orange headers to select the coverage patterns and Music/Speech
voicing.
(Header positions shown below: Array Upper Half NARROW pattern setting, Array
Lower Half DOWNFILL pattern setting, and MUSIC/FLAT EQ [Voicing]
setting.)
CBT 1000 Two-Way Line Array Column with Adjustable Vertical Coverage and
Tapered Horizontal Waveguide
Pattern: Up “Medium”; Down “Downfill”
(widest vertical setting; asymmetrical)
Frequency Response & Impedance: Sensitivity 2.83V @ 1m, and Impedance
“Music” mode (solid) “Speech” Mode (dotted)
Pattern: Up “Narrow”; Down “Broad”
(medium vertical setting; asymmetrical)
Frequency Response & Impedance: Sensitivity 2.83V @ 1m, and Impedance
“Music” mode (solid) “Speech” Mode (dotted)
CBT 1000 Two-Way Line Array Column with Adjustable Vertical Coverage and
Tapered Horizontal Waveguide
Pattern: Up “Tight”; Down “Narrow” (tight vertical setting; asymmetrical)
Frequency Response & Impedance: Sensitivity 2.83V @ 1m, and Impedance “Music”
mode (solid) “Speech” Mode (dotted)
Pattern: Up “Point”; Down “Point”
(tightest vertical setting; symmetrical)
Frequency Response & Impedance: Sensitivity 2.83V @ 1m, and Impedance
“Music” mode (solid) “Speech” Mode (dotted)
CBT 1000 Two-Way Line Array Column with Adjustable Vertical Coverage and
Tapered Horizontal Waveguide
Horizontal Beamwidth
Curves below show beamwidth of tweeter 4th from the top of the array, 12th
from the top of the array, from the middle of the array, and 4th from the
bottom of the array respectively.
CBT 1000 Two-Way Line Array Column with Adjustable Vertical Coverage and
Tapered Horizontal Waveguide
Dimensions
Dimensions in mm [in]
With Included Two-Piece Wall-Mount Bracket
Shown Without Included Swivel Part (no horizontal panning)
Shown With Included Swivel Part
(for +/- 45 degree horizontal panning)
CBT 1000 Two-Way Line Array Column with Adjustable Vertical Coverage and
Tapered Horizontal Waveguide
Exploded View Diagram of Included Swivel (Pan) / Tilt Bracket
(Diagram is example only. Consult JBL CBT 1000 Bracket Installation Guide for
detailed installation instructions)
- NOTE: Use SWIVEL BRACKETS when panning is needed for aiming speaker horizontally. When panning is not needed, leave SWIVEL BRACKETS out, and mount
SPEAKER BRACKET directly to CBT 1000 cabinet. Diagram is example only. Consult JBL CBT 1000 Bracket Installation Guide for detailed installation instructions.
JBL Professional
8500 Balboa Boulevard, P.O. Box 2200
Northridge, California 91329 U.S.A. ©
Copyright 2020 JBL Professional
www.jblpro.com
SS CBT1K REV A 01/20
Documents / Resources
| JBL
CBT1000 Paging
Speaker
[pdf] Instruction Manual
CBT1000 Paging Speaker, CBT1000, Paging Speaker, Speaker
---|---
References
Read User Manual Online (PDF format)
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