Control®24CT MicroPlus Background Music Ceiling Speaker
Extremely wide 150° coverage.
Smooth frequency response.
Advanced crossover network provides
very even coverage throughout listening
• 115 mm (4.5 in) woofer, injection
molded graphite cone with butyl
• 12 mm (.5 in) polycarbonate tweeter
for extended response.
Control 24CT MicroPlus includes 25W
multi-tap transformer for 70V/100V
Shallow 100 mm (4 in) depth.
Packaged with grille, backcan and tile
rails for fast installation and easy dealer
The Control 24CT MicroPlus is a
compact in-ceiling speaker, providing
full, high quality sound for background
music and music-plus-paging systems.
These speakers are ideally suited for a
wide variety of applications, from
restaurants and specialty retail stores to
professional offices and airports. Low
distortion, a smooth, natural frequency
response, and a 25W transformer make
the Control 24CT MicroPlus ideal for
medium volume business music. Low
frequency output can be augmented
with the addition of one of the Control
Contractor subwoofer models. Similar
mid/high frequency voicing to other
JBL Control Contractor loudspeakers
allows mixing and matching of models
within zones without requiring separate
Installation of the Control 24CT
MicroPlus is quick and easy. The loudspeaker
is packaged with the backcan,
grille, support backing bracket and tile
rails. In addition, optional new
construction brackets are available.
The entire installation can be
accomplished without requiring access
above the ceiling.
The Control 24CT MicroPlus backcan
is made of formed steel and the speaker
is suitable for use in air handling
spaces per UL2043. An attachment
loop is provided on the backcan for
cabling. A seismic tab is provided as a
The Control 24CT MicroPlus trim and
baffle are paintable to match any decor.
Frequency Range (-10 dB)1: 80 Hz - 25 kHz
Nominal Sensitivity2: 85 dB SPL @ 1 m (3.3 ft)
Crossover: 3.5 kHz, 3rd order low-pass plus 3rd order high-pass with conjugate
Rated Maximum SPL: 99 dB @ 1 m (3.3 ft), 25W tap
Transformer Taps: 70V: 25W, 12W, 6W taps
100V: 25W, 12W taps
Low Frequency: 115 mm (4.5 in) IMG (injection molded graphite), 24 mm (1 in)
High-Frequency: 12 mm (0.5 in) polycarbonate
Backcan: Formed steel
Baffle/Rim: Medium impact polystyrene, fire rated UL94V-O
Secondary Attachment Point: Included
Termination: Screw-down terminals, touch-proof, UL, CE and VDE rated,
outside of backcan with conduit cover
Safety Agency Rating: In accordance with IEC60849 / EN60849. Suitable for use in air
handling spaces, per U.L.-2043, U.L.-1480, NFPA90, NFPA70A.
Outside Dimensions (H x Dia): 133 x 195 mm (5.3 x 7.7 in)
105 mm (4.1 in) front of ceiling tile to back of the backcan
Cutout Size: 167 mm (6.6 in)
Net Weight (ea): 2.5 kg (5.5 lb)
Shipping Weight (pr): 7.6 kg (17 lb)
Included Accessories: C-shaped support backing plate
2 tile support rails (fits both 2 ft and 600 mm tiles)
Cutout template, cardboard
Optional Accessories: MTC-24TR trim ring for retrofit installations
MTC-24NC optional new construction bracket, flat
MTC-24MR optional mud ring construction bracket
1Half-space (flush mounted in ceiling)
2Half-space (in ceiling), averaged 100 Hz to 10 kHz.
JBL continually engages in research related to product improvement. Changes introduced into existing products without
notice are an expression of that philosophy.
The loudspeaker shall be of in-ceiling design, consisting of a 115 mm (4.5 in) low frequency transducer, a 12 mm (0.5 in) tweeter, and frequency
dividing network installed in an integral ported enclosure. The low frequency voice coil shall be 24 mm (1 in) in diameter and the
cone shall be of lightweight injection molded graphite.
Performance specification of a typical production unit shall be as follows: Measured sensitivity (SPL at 1m [3.3 ft] with 2.83V input, averaged
from 100 Hz to 10 kHz) shall be at least 85 dB-SPL. Usable frequency response shall extend from 80 Hz to 25 kHz (10 dB below rated sensitivity)
with no external equalization.
The speaker shall have a nominal conical polar coverage pattern of 150 degrees (at -6 dB point), averaged 500 Hz to 10 kHz, and shall hold
the same consistent polar coverage pattern when averaged in the intelligibility frequency band from 1 kHz to 4 kHz.
The backcan shall be constructed of formed steel and the baffle of UL94V-O fire rated medium impact polystyrene. An agency-rated
enclosed-terminal wiring block shall be provided on the side of the backcan to allow positive screw-down connection of wiring.
The system shall include a support backing plate to reinforce the ceiling material and tile support rails for use on either 2 ft or 600 mm
suspended ceiling tiles, and which can be installed from beneath the ceiling tile.
Overall front face diameter shall not exceed 195 mm (7.7 in) and overall depth from the bottom of the ceiling shall not exceed 105 mm
The loudspeaker shall be equipped with transformer for use in either 70.7V or 100V distributed-line speaker systems, with taps selectable by
connecting the input wire to the selected enclosed wiring block terminal. Taps shall be nominally 25W @ 70V, 12W @ 70V (25W @ 100V), and
6W @ 70V (12W @ 100V). The loudspeaker shall weigh no more than 2.5 kg (5.5 lb).
The loudspeaker shall be the JBL Model Control 24CT MicroPlus.