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Table of Contents
Related Manuals for JBL Ceiling Loudspeakers
Summary of Contents for JBL Ceiling Loudspeakers
- Page 1 Control Contractor Ceiling Loudspeakers Owner’s Manual...
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Page 2: Table Of Contents
Table of Contents Product Description... 2 Product Feature Identification... 3 Installation Preparations... 4 Step-By-Step Installation and Wiring... 6 Painting the Speaker... 15 Safety Agency Compliance... 16 Maintenance ... 16 Replacement Parts... 17 Contacting JBL... 17... -
Page 3: Product Description
The JBL Control Contractor ceiling loudspeakers utilize innovative design and materials to provide premium level performance from compact in-ceiling speakers. CONTROL 24C & 24CT – Most compact of the JBL ceiling speakers, the Control 24C contains a coaxially mounted 4” woofer and ¾” titanium-coated tweeter, providing high-fidelity full-range sound over an extremely wide coverage area. -
Page 4: Product Feature Identification
Product Feature Identification Tap Selector (on T-versions) Removable Locking Input Connector (Control 24C Shown) Steel Backcan Loudspeaker Attachment Screws Strain Relief Fitting Seismic Tab (secondary support point) Terminal Cover Plate Assembly Rotating Mounting Tabs Perforated Press-In Grille JBL Logo... -
Page 5: Installation Preparations
Control Contractor 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... - Page 6 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.
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Page 7: Step-By-Step Installation And Wiring
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. - Page 8 Step 3 – Connect the Wiring to the Removable Locking Connector – Connect the wiring to the removable locking connector that is INCLUDED with the speaker by stripping the insulation back about 5 mm (about 3/16 inch), inserting the bare end of wire into the connector and screwing down the hold-down screw until tight using a small flatblade screwdriver.
- Page 9 Paralleling Input Terminals -- Connect the wire pair of the subsequent speaker to pins 2 & 3 (in parallel with the input wire pair). Whenever the connector is pulled out of the speaker for troubleshooting, subsequent speakers will stay connected.
- Page 10 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.
- Page 11 Step 5 – Tighten the Strain Relief Fitting & Close the Terminal Cover First, remove the horizontal screw indicated in the drawing below. 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. Figure 13: Running Wires Through Opening...
- Page 12 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.
- Page 13 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.
- Page 14 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. Turn the attachment screws to tighten the mounting tabs, by using the following directions: IMPORTANT -- For each attachment screw, FIRST turn ½...
- Page 15 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.
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Page 16: Painting The Speaker
The rim can be painted before installation or in cases where the rim needs to be finished along with the ceiling, the speaker rim can be painted after attaching into the ceiling. Type of Paint – The speaker’s polystyrene rim accepts almost any type of latex or oil based paint. Two coats are recommended. -
Page 17: Safety Agency Compliance
These products are in compliance with the EMC Directive 89/336/EEC and Article 10 (1) of the directive. In compliance with Technical Regulations EN50081-1 and EN50082-1. For a copy of the model-specific CE Declaration of Conformity, contact JBL at the address listed at the end of this manual. -
Page 18: 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. - Page 19 JBL Professional 8500 Balboa Blvd, P.O. Box 2200 Northridge, CA 91329 U.S.A. A Harman International Company CEILING SPKR MANUAL Rev D...