Control Contractor Ceiling Loudspeakers Owner’s Manual
Table of Contents Product Description......................................................................................... 2 Product Feature Identification......................................................................... 3 Installation Preparations.................................................................................. 4 Step-By-Step Installation and Wiring............................................................. 6 Painting the Speaker...............................................
Thank you for purchasing JBL Control Contractor ceiling loudspeakers. Read through this manual to familiarize yourself with the features, applications and precautions before you use these products. Product Descriptions The JBL Control Contractor ceiling loudspeakers utilize innovative design and materials to provide premium level performance from compact in-ceiling speakers.
Product Feature Identification (Control 24C Shown) Steel Backcan Loudspeaker Di Tap Selector (on T-versions) Attachment Screws Strain Relief Fitting Removable Locking Input Connector Seismic Tab (secondary support point) Terminal Cover Plate Assembly Rotating Mounting Tabs Perforated Press-In Grille JBL Logo 3
Installation Preparations The entire installation 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.
2) The optional PLASTER-RING BRACKET (or “mud ring”) 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 either precut or cut with a rotary cutting tool using the outside of the plaster ring circle as a guide. The sheet rock hole is then plastered (or “mudded”) up to the ring to create a seamless cutout.
STEP-BY-STEP INSTALLATION AND WIRING The installation system has been designed so that the entire installation can be accomplished from beneath the ceiling, for instances when access above the tile is not possible or practical. However, in some cases it may be easier with removable ceiling tiles to access from both the top and bottom of the ceiling tile during various phases of the installation. Step 1 – Cut the Hole.
Figure 4: C-Bracket and Tile Rail Positioning on Ceiling Tile Tile Rails: The tile rails are designed to fit either standard 24-inch wide tiles or 600-mm wide tiles. The tile rail pieces do NOT physically attach to the T-grid struts. Instead, the inverted-V shape at the ends of the rails sit OVER the T-grid strut. During normal operation, the rails are supported by the edge of the tile.
Guide to the Pins for Connection -- The removable locking input connector contains 4 terminals, as marked on the connector. The pin functions are listed on the label located on the terminal cover plate. CONNECTION 1 2 3 4 Figure 6: Connector Pins + – Loop Thru Loop Thru + – IN IN Pins 2 & 3 are the “+” and “-” inputs to the loudspeaker. Pins 2 & 3 are looped to pins 1 & 4, respectively (Pin 1 connects to Pin 2 and Pin 3 connects to Pin 4) inside the speaker.
Using Loop-Through Terminals (Pins 1 & 4) -- By connecting the wire pair of the subsequent speaker to pins 1 & 4, then all subsequent speakers will be disconnected when this speaker’s connector is disconnected during for troubleshooting,. This can be useful as a way to isolate problems to a section of the distributed line while leaving the wires attached to the connector.
Step 5 – Tighten the Strain Relief Fitting & Close the Terminal Cover First, remove the horizontal screw indicated in the drawing below. Figure 12: Opening the Strain-Relief Fitting Next, loosen the screws holding the fitting’s sliding pieces onto the input-terminal cover by about a half turn. Run the wires through the opening in the fitting.
The strain relief can be tightened in two ways, choose whichever is best for your application: a) Tightening onto plenum cable or bare wire -- Slide the wiring through the strain relief fitting on the terminal cover plate. In the case of bare wire and plenum cable it is often possible to provide acceptable strain relief force by simply tightening the screws holding the sliding strain relief onto the terminal cover plate.
b) Tightening onto flexible or hard conduit – The supplied fitting accommodates up to 3/8 inch (9.5mm) flexible conduit. Slide the wiring through the strain relief fitting on the terminal cover plate. Insert the conduit into the strain relief fitting. Reinsert the horizontal screw that was previously removed. Use the two horizontal screws that clamp the fitting together, clamping the conduit securely between them.
Step 6 – Insert the Speaker Into the Ceiling and Tighten. Insert the speaker into the ceiling as far as it goes, until the front baffle rim touches the ceiling. Figure 16: Inserting Speaker Into Ceiling Turn the attachment screws to tighten the mounting tabs, by using the following directions: IMPORTANT -- For each attachment screw, FIRST turn ½ turn COUNTER-CLOCKWISE to release the mounting tab from its guide. Then tighten the mounting tabs by turning the screw CLOCKWISE until tight.
Model Number of Attachment Screws Control 24C & 24CT 3 screws Control 26C & 26CT 4 screws Control 19CS & 19CST 5 screws Step 6 – Connect a Secondary Support Line to Seismic Tab – A tab is provided on the back of each speaker for connection to a independent secondary support point. Some construction codes require using this secondary support point, which requires connecting a support line to a separate secure support point.
Step 8 – Insert the Grille – Consider which direction the logo is facing and press the grille into place until the front of the grille is flush with the rim. Make sure grille is securely seated to prevent it from vibrating loose and falling. Removing the Grille -- The grille presents a tight fit in order to make sure that it won’t fall out, even with high vibrations that can be produced by these speakers.
Safety Agency Compliance Complies with the requirements of UL-2043 Fire Tests for Heat and Visible Smoke Release for Discrete Products and their Accessories Installed in Air Handling Spaces, NFPA-70 National Electric Code 1996, Article 300-22(C), and NFPA-90A Installation of Air Conditioning and Ventilation Systems, Section 2-3.10.1 (a), Exception 3. Listed UL1480-5 Speakers for Fire Protective Signaling Systems.
Replacement Parts There are no user serviceable parts inside these speakers. The following replacement parts are for reference only. Refer servicing to an authorized JBL Service Center. For the name of an authorized Service Center in your area, contact JBL Professional at the address listed below.
JBL Professional 8500 Balboa Blvd, P.O. Box 2200 Northridge, CA 91329 U.S.A.
