Specification Sheet

Control
®
24CT-BK
Professional Series – Background/Foreground Ceiling Speaker
SPECSHEET
195
(7.7)
163
(6.4)
163
(6.4)
183
(7.2)
200
(7.9)
Off Axis Frequency Response (1/3 Oct Avg):
Measured on-axis with a distance referenced to 1 meter at 1 watt.
Shown as a half-space (2pi) environment. (X-former bypassed.)
Frequency Response:
195
(7.7)
163
(6.4)
163
(6.4)
183
(7.2)
200
(7.9)
Input connection is conveniently provided on a
removable locking connector (included), providing
secure connection via screw-down 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 1/2-inch 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-BK 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-BK 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 30W multitap transformer is for use in either 70.7V
or 100V distributed-line systems. 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.