Control 24CT-BK

Background/Foreground Ceiling Speaker in Black

Control 24CT-BK
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Background/Foreground Ceiling Speaker

The Control 24CT-BK is a compact ceiling speaker providing premium performance in background, foreground and music-pluspaging sound systems. The Control 24CT-BK 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-BK 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.


  • Coaxially mounted 100 mm (4 in) woofer with butyl rubber surround and 19 mm (¾ in) titanium coated diffraction-loaded tweeter
  • 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
  • Black baffle and grille works well in black and dark ceiling


  Version Language Size Uploaded
Data Sheets
file type icon Control 24CT-BK Spec Sheet
version B, updated: ต.ค. 2020
  516 กิโลไบต์ ต.ค. 2020
file type icon MTC-TCD Thick-Ceiling Dogear
updated: ต.ค. 2019
    41.7 กิโลไบต์ ต.ค. 2019
CAD Drawings
file type icon Control Surface Mount 2D Drawings
updated: ต.ค. 2020
    674 กิโลไบต์ ต.ค. 2020
file type icon Control Contractor Ceiling Speakers 3D Drawing
updated: ต.ค. 2020
    3.42 เมกะไบต์ ต.ค. 2020
file type icon JBL Control Series Passive Speakers DoC
updated: ธ.ค. 2019
    179 กิโลไบต์ ธ.ค. 2019
Owner's Manuals
file type icon Control Contractor Ceiling Loudspeakers Owner’s Manual
updated: ต.ค. 2020
    386 กิโลไบต์ ต.ค. 2020
Simulation Data
file type icon JBL Pro ALL CLF Files
version 12-10-21, updated: พ.ค. 2023
12-10-21    24 เมกะไบต์ พ.ค. 2023
file type icon MTC-CS-Teth1 Press-In Grille Safety Tether
updated: ก.ย. 2021
    204 กิโลไบต์ ก.ย. 2021
Install Guides
file type icon Guide to Business Music
updated: ต.ค. 2020
    52.4 กิโลไบต์ ต.ค. 2020
file type icon CC Ceiling Speakers: Myth versus Reality
updated: ต.ค. 2020
    23.9 กิโลไบต์ ต.ค. 2020
file type icon Control 24CT-BK Hi-Res Image
updated: ต.ค. 2020
    383 กิโลไบต์ ต.ค. 2020

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Parts & Service


Frequency Range 80 Hz - 20 kHz
Power Rating See transformer taps
Transformer Taps 70V: 30W, 15W, 7.5W (& 3.7W @ 70V)
Coverage Angle 130° conical
Directivity Factor (Q) 2.4 dB averaged 500 Hz to 4 kHz
Directivity Index (DI) 3.8 dB averaged 500 Hz to 4 kHz
Maximum SPL (1m) 102 dB (top 70V/100V tap)
Nominal Impedance 16 ohms (Min Z 16.1 ohms @ 320 Hz)
Sensitivity 86 dB (100 Hz - 10 kHz)
Input Connectors Removable 4-pin locking connector with screw-down terminals.
Drivers LF Driver: 100 mm (4.0 in)
HF Driver: 19 mm (0.75 in)
Color Black
Safety Agency Suitable for use in air handling spaces per UL1480, UL2043, NFPA90 & NFPA 70. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849.
Backcan formed steel (included "blind-mount")
Baffle/Rim Medium impact polystyrene, fire rated UL94V-0
Ceiling Cutout Size 168 mm (6.6 in) diameter (cardboard cutout template included)
Included Accessories C-shaped support backing plate 2 tile support rails (fits both 2 x 4 ft or 600 x 1200 mm tiles) Cutout template Paint shield Removable locking wiring connector
Plenum Usage Yes, backcan included


HARMAN Professional Solutions:

Control 24CT-BK

Background/Foreground Ceiling Speaker in Black