JBL CBT 70JE-1-WH Purpose Designed Extension for CBT70J-1 Line Array Column Speaker, White

The JBL CBT 70JE-1-WH line array column speaker extension (Black) provides extended bass response, extended pattern control and increased sound output levels. The combined array system provides Constant Beamwidth Technology, which represents a breakthrough in pattern control consistency, utilizing complex analog beamforming and amplitude tapering to accomplish superior, consistent vertical coverage without the narrow vertical beaming and out-of-coverage lobing that are typical of passive column speakers.

The drivers have 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 coils provides high linear drive and high-power handling in a compact driver. The drivers feature damped blended surrounds and coated sealed paper cones found in high-performance large format drivers. Drivers feature coated diaphragm materials to provide moisture, UV and salt resistance for outdoor capability.

Key Features

• Components: Four 125 mm (5 in) high-power LF drivers
• 500 Watt power handling (70JE-1)
• Built-in purpose-designed crossover network, for combining with 70JE-1
• Coupler plate included
• Extended pattern control (to 400 Hz for ± 20° control, to 200 Hz for substantial off-axis cancellation)
• Extended bass response to 45 Hz.
• Components: Sixteen 25 mm (1 in) soft dome tweeters and eight 125 mm (5 in) high-power LF drivers.
• 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.
• Coupler plate and wall swivel (pan)/tilt bracket included (rear insert-point pattern fits standard third-party brackets)

Technical specs

Components
Four (4) 130 mm (5 in) LF drivers
Frequency Range (-10 dB)
45 Hz - 700 Hz
Sensitivity (2.83V @ 1m)
90 dB full space, 96 dB half-space (65 Hz - 300 Hz)
Nominal Impedance
8 ohms
Power Capacity
500 W (2000 W peak), 2 hrs
350 W (1400 W peak), 100 hrs
Max SPL
117 dB
Pattern Control Frequency (± 20 deg.)
400 Hz
Mounting
10 x M6 insert points, combining bracket included
Color
Black
Dimensions (H x W x D)
1388 x 168 x 235 mm (54.8 x 6.6 x 9.3 in)
Weight
8.2 kg (18 lb)