JBL C24CT-BK 4" 2-WAY Coaxial Ceiling Spk W Transformer, Blk
Description
JBL C24CT-BK 4" 2-Way Coaxial Ceiling Speaker with Transformer
The C24CT-BK is a professional-grade ceiling speaker built for the tour schedules and permanent installations that demand reliable, consistent coverage. Its compact 7.2" depth allows for seamless flush-mount installation in standard ceiling cavities, while the included back can and tile rails simplify setup on load-in days or retrofit work. This coaxial design keeps coverage even and predictable without requiring multiple speaker placements.
Distributed-Line System Compatibility
The integrated 30W multitap transformer supports both 70V and 100V line configurations—critical for long-run installations where you're pushing audio down hallways, across multiple rooms, or through a venue's back-of-house infrastructure. Switchable taps at 30W, 15W, 7.5W (plus 37W at 70.7V) let you dial in the right level for your system without hunting for external transformers or adapters on show day.
Acoustic Coverage & Protection
The coaxially mounted 4" woofer with butyl rubber surround and 0.75" titanium-coated diffraction-loaded tweeter produce a 130° coverage pattern across an 80 Hz–20 kHz frequency response, ensuring even sound distribution in real-world rooms. SonicGuard Overload Protection safeguards the drivers against peak-level damage during the sustained operation that comes with touring and heavy venue use.
Key Features
- 4" woofer with butyl rubber surround
- 0.75" titanium-coated diffraction-loaded tweeter
- Coaxial speaker design for integrated frequency response
- 30W multitap transformer for 70V or 100V distributed-line systems
- Switchable transformer taps: 30W, 15W, 7.5W (plus 37W at 70.7V)
- Frequency Response: 80 Hz to 20 kHz
- 86 dB sensitivity
- 130° coverage pattern
- 7.2" depth from flush ceiling
- Formed steel back can
- Includes grille, back can, and tile rails
- SonicGuard Overload Protection
The C24CT-BK combines flexible transformer configuration, road-tested overload protection, and professional acoustic engineering into a single compact fixture designed for sound systems that run hard and need to stay dependable.
More Information
| Condition | New |
|---|
Reviews
At a Glance
The JBL C24CT-BK is a professional 4" coaxial ceiling speaker with an integrated 30W multitap transformer built for distributed audio systems in offices, retail, hospitality, and institutional spaces. Its compact 7.2" depth, 130° coverage pattern, and switchable transformer taps (30W, 15W, 7.5W at 70V/100V) eliminate the need for external gear and simplify long-run installations across multiple zones. Choose it for reliable, even sound coverage in commercial environments where consistent frequency response and easy ceiling integration matter more than high-fidelity music playback.
Who This Is For
Great for
- ✓ Commercial installations
- ✓ Distributed audio systems
- ✓ Office/retail/hospitality spaces
- ✓ Institutional environments
Not the best pick for
- – Live music venues
- – Studio monitoring
- – High-fidelity music playback
Skill level: Professional
Frequently Asked Questions
What does the integrated transformer do, and do I need external equipment?
The built-in 30W multitap transformer supports both 70V and 100V distributed-line systems with switchable taps at 30W, 15W, 7.5W (plus 37W at 70.7V), so you can match impedance directly without external transformers or adapters. This simplifies long-run installations in large commercial spaces.
How difficult is the installation?
The C24CT-BK is designed for flush mounting in standard ceiling cavities with a compact 7.2" depth. It includes a formed steel back can and tile rails for straightforward integration into drop ceilings and drywall.
What coverage pattern and frequency range does it deliver?
The coaxial 4" woofer and 0.75" titanium-coated tweeter produce a 130° coverage pattern and 80 Hz–20 kHz frequency response, ensuring even sound distribution in typical office, retail, and hospitality room sizes.
Is this suitable for live music venues or studio monitoring?
No. The C24CT-BK is engineered for commercial distributed audio in offices, retail, and institutional spaces — not live venues or high-fidelity music playback. Its compact design and transformer configuration prioritize system flexibility over music-grade reproduction.
What protection does it offer against speaker damage?
SonicGuard Overload Protection safeguards the drivers against peak-level damage in sustained-operation environments, making it reliable for always-on or high-duty-cycle installations.