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JBL Professional Control 24CT 4" Background/Foreground Ceiling Loudspeaker (sold in pairs)

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Item#: CONTROL-24CT-RETAIL
UPC: 050036903981
Ships in 5-7 days
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I DJ NOW Webstore – Orders to be Shipped only: 1 800 355 7746 I DJ NOW - Babylon, NY store (Pick Up In Store Only)
Mon - Sat 10am - 8pm
Sun 11am - 5:00pm
631 321 1700


I DJ NOW - Queens, NY Store (Pick Up In Store Only)
Mon - Fri 10am - 9pm
Sat 10am - 7pm
Sun 12 noon - 6pm
718 762 0100

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Free Shipping on most orders with minimum purchase of $50 or more for a limited time. Ground shipments only in the lower 48 contiguous United States. Excludes oversized or overweight items such as oversized speakers, oversized cases, trussing & staging. Other exclusions include some fluids, some parts & special orders. Any questions, please call 1-800-355-7746 during normal business hours. Offer subject to change or termination without notice. Not responsible for typographical errors.

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About This Product

The Control 24CT is a compact ceiling speaker providing premium performance in background, foreground and music-plus-paging sound systems. The Control 24CT is perfectly suited for a wide variety of applications from professional offices and airports to restaurants and specialty retail stores. High power handling, wide frequency response and low distortion make the Control 24CT ideal for sound systems requiring a higher fidelity sound from ceiling loudspeakers. The premium performance capability ensures excellent sound character, providing pleasant, enveloping sound throughout the listening area.

Control 24CT Features:
  • Coaxially mounted 100 mm (4 in) woofer with butyl rubber surround and 19 mm (.75 in) titanium coated.
  • High power, wide frequency response and low distortion for high sound level capability.
  • Wide coverage allows fewer speakers, reducing the cost of the installed sound system without sacrificing performance.
  • Packaged with grille, backcan and tile rails for fast installation and easy dealer stocking.

The Control 24CT’s 16 ohm impedance allows use of multiple speakers in parallel without having to use a more expensive constant voltage distributed system. The optional Control 24CTT version includes a multitap transformer for 70V/100V systems.

JBL’s exclusive SonicGuard overload protection is a non-invasive loudspeaker protection system that is inaudible to the listener, ensuring reliability while providing full fidelity sound. The computer-optimized ported enclosure delivers warm, smooth bass response. Low frequency output can be further augmented with the addition of one of the Control Contractor subwoofer models.

The 100 mm (4 in) woofer features a polypropylene-coated cone and pure butyl-rubber surround for long life, even in high humidity environments. An aluminum voice coil former provides extra cooling for greater long-term power handling.

The coaxially mounted 19 mm (¾") titanium coated tweeter provides crisp, clear highs. Diffraction-loading of the tweeter provides wide, even coverage of the listening area. The extremely broad 130° coverage pattern allows for fewer speakers to be used, making for a simpler and less expensive installation.

Input connection is conveniently provided on a removable locking connector (included), providing secure connection via screwdown terminals and allowing a system to be prewired before installing the speaker for fast snap-on convenience. Separate connector terminals are available for the input and for the loop-through wires, making it easy to jumper the speaker signal to additional speakers. The input terminal plate provides strain relief for either bare wire, plenum cable or ½" conduit (12 mm I.D.). The terminal box is securely enclosed to meet safety codes.

The speaker trim and grille are paintable to match any decor. A paint shield is provided for covering the drivers while painting the rim. Installation of the Control 24CT is quick and easy. The loudspeaker is packaged complete with the backcan, grille, support backing bracket and tile rails.

The entire installation can be accomplished without requiring access above the ceiling. A template is provided for marking the cutout. An innovative C-shaped support backing plate can be installed from below through the cutout to reinforce the top of the ceiling material. Tile bridge rails are included which can be screwed onto the C-plate to extend support to the T-channel grid in suspended ceiling installations. After the speaker is fitted through the cutout, it is held securely in place via three mounting tabs which tighten onto the C-plate, if used, or directly onto the ceiling material.

The Control 24CT backcan is made of formed steel and the speaker is suitable for use in air handling spaces, per U.L.-2043. An attachment loop is provided on the backcan for cabling to the building structure as a secondary support in seismic areas or where required by code.

The optional Control 24CTT includes a 30W multitap transformer for use in either 70.7V or 100V distributed-line systems. The transformer effectively limits the power to the speaker, so SonicGuard is not included in the Control 24CTT. Taps are selected with a rotary switch conveniently located on the front panel, but protected under the grille, so that the speaker does not have to be removed to adjust tap settings.

All JBL Control Contractor loudspeakers - both ceiling speakers and surface-mount models - are designed with a similar sonic signature, allowing for mixing and matching of the various models within an application, providing a similar tonal character throughout the entire listening area.

JBL Professional Control 24CT Specifications:
Frequency Range 80 Hz - 20 kHz
Power Capacity 80 W Continuous Program Power; 40 W Continuous Pink Noise
Transformer Taps 70 V: 30 W, 15 W, 7.5 W & 3.7 W taps
100 V: 30 W, 15 W, & 7.5 W taps
Nominal Coverage Angle 130° conical coverage
Directivity Factor (Q) 2.4 dB averaged 500 Hz to 4 kHz
Directivity Index (DI) 3.8 dB averaged 500 Hz to 4 kHz
Rated Maximum SPL 102 dB @ 1 m (3.3 ft)
Nominal Impedance 16 ohms (Min Z 16.1 ohms @ 320 Hz)

The Control 24CT Retail Box Includes:
(2) JBL Professional Control 24CT 4" Background/Foreground Ceiling Loudspeakers

Each Individual Control 24CT Box Includes:
(1) JBL Professional Control 24CT 4" Background/Foreground Ceiling Loudspeaker
(1) C-Shaped Support Backing Plate
(2) Tile Support Rails (fits both 2 x 4 ft or 600 x 1200 mm tiles)
(1) Cutout Template
(1) Paint Shield
(1) Removable Locking Wiring Connector