2) The optional PLASTER-RING BRACKET or “mud ring”
(MTC-19MR) contains a circular offset, forming a edge guide
for sheet rock plastering. The bracket has wings that attach
to the building structure. Sheet rock is typically precut, then
the sheet rock hole is then plastered (or “mudded”) up to the
ring to create a seamless cutout.
USING INCLUDED C-BRACKET WITH SHEETROCK
For most installations, the INCLUDED C-shaped backing
plate provides adequate reinforcement to the ceiling material,
spreading out the clamping force from the tab clamps.
CUTOUT SIZE
Packaged with the speakers are cardboard cutout templates
for scribing the cutout hole onto your ceiling surface. The
cutout size diameter for the Control 226C/T is
12.1
inches
(307 mm).
Control 226C/T PREPARATION
The installation of the Control 226C/T can be accomplished,
if necessary, without requiring access above the ceiling.
Bracketry for use with either suspended ceilings or sheetrock
ceilings is included. The speaker is held securely in place
via mounting ears which lock into place. Inputs are attached
to a removable locking connector (included) which can be
prewired before installing the speaker for ultra-fast snap-on
installation.
OPTIONAL PRE-INSTALLATION BRACKETS
IN MOST CASES, NO BRACKETS OTHER THAN
THE ONES INCLUDED WITH YOUR SPEAKER ARE
REQUIRED. Everything needed for most installations of
these loudspeakers is provided with your Control 226C/T
ceiling speaker.
However, a particular procedure that is sometimes used for
installation into sheet rock (typically gypsum board) can be
facilitated by the use of JBL’s optional preinstallation brackets
before the sheetrock is installed. The preinstallation bracket
provides a bracket to which wiring can be tied behind the
sheetrock and it can function as a cutout template when many
cutouts are to be made in a production-line style installation.
Two types of pre-installation brackets are available from JBL
Professional as optional accessories:
1) The optional NEW-CONSTRUCTION BRACKET (MTC-
19NC) is made of flat sheet metal, with wings to attach to
the building structure. Holes are drilled for nails or screws
at 16 inches (406 mm) and 24 inches (610 mm) on-center.
Additional holes can be drilled by the installer at other
spacings up to a maximum of 24-3/4 inches (630 mm)
apart. Sheet rock installs over the bracket, and the bracket
provides a template for blind cutout of the hole in the sheet
rock. The sheet rock is typically cut with a router-type cutting
tool, using the bracket ring as a cutout guide.
Optional New-Construction
Bracket
Optional Plaster
Ring Bracket
3
JBL Professional Control 200 Series
