Gebruiksaanwijzing /service van het product SF 228T van de fabrikant Extron electronic
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User Guide SF 228T Audio Products 2 ’ x 2 ’ Ceiling Speakers 68-2018-01 Rev. A 0 5 11.
This symbol is intended to alert the user of important operating and mainte- nance (servicing) instructions in the literature provided with the equipment. This symbol is intended to alert the user of the presence of uninsulated dangerous voltage within the product feets enclosur e that may present a risk of electric shock.
FCC Class A Notice This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference.
Copyright, and T rademark Information Conventions Used in this Guide In this user guide, the following are used: NOTE: A note draws attention to important information. TIP: A tip provides a suggestion to make working with the application easier . CAUTION: A caution indicates a potential hazard to equipment or data.
SF228TSpeakerSystem•Contents v Contents Precautions/Safety Instructions ............................. ii FCC Information ................................................. iii Copyright, and T rademark Information ............... iv Introduction .
SF228TSpeakerSystem•Contents vi.
SF228TSpeakerSystem•Introduction 1 Intr oduction About this User Guide This user guide contains information about the Extron SF 228T 2-way ceiling speakers. The SF 228T features a low pr ofile design that houses an 8-inch woofer and 1-inch dome tweeter and has the appearance of a standard ventilation grill.
SF228TSpeakerSystem•Introduction 2 Application Example The following illustration is an application example. POWER 12V 1.5A MAX RESET LAN 3 6 2 5 1 4 4 5 6 1 2 3 4 MIC/LINE INPUTS O U T P U T S TxRx RS-232(2) Tx Rx RS-232(1) I/O 4 5 6 12 3 MIC + 48V 1 3 2 DMP 64 LAN ACT LINK RESET INPUTS OUTPUTS 1 2 3 4 US LISTED 1T23 I.
SF228TSpeakerSystem•Installation 3 Installation This section discusses how to install the SF 228T speaker and includes: • Installation Considerations • Installing the Speakers • Speaker Cabling • Completing the Installation CAUTION: Installation and service must be performed by authorized personnel only .
SF228TSpeakerSystem•Installation 4 3. Remove the terminal cover plate — Loosen (do not remove) the two scr ews in the keyhole slots on the top terminal cover plate and remove the cover plate as shown below . Loosen, bu t do not remo ve the terminal co ve r plate screws in the two key hole slots.
SF228TSpeakerSystem•Installation 5 b. When using speaker wires without conduit — Secur e the cable clamp adapter (included) to the cover plate and insert the wires thr ough the clamp, (see the illustration below).
SF228TSpeakerSystem•Installation 6 1. Flip the terminal cover plate so the transformer side is up. Black (-) To Second Spea ke r Red (+) Red (+) Black (-) Fr om Amplifier (70V/100V) NC 2 W 4 W 8 W 16 W 32 W COM 70 V 100 V COM NC 32 W 16 W 8 W 4 W 2 W (Red) To Speaker , Te r minal (Black) To Speaker .
SF228TSpeakerSystem•Installation 7 e. T o wir e additional speakers, route the speaker wir es from the second speaker through the cover plate hole to the transformer side. T wist the black negative ( – ) wires together and the r ed positive ( + ) wires together befor e inserting them into the terminal block.
SF228TSpeakerSystem•Installation 8 Direct 8 Ohm Connection to an Amplifier 1. An amplifer 8 ohm speaker output can be directly connected to the speaker terminal of the SF 228T , (see the diagram below).
SF228TSpeakerSystem•Installation 9 Completing the Installation NOTE: Observe all applicable building codes and local ordinances when installing the speaker . 1. For installation in a 2 feet x 2 feet ceiling tile, remove a tile and place the speaker on the existing support rails as shown below .
SF228TSpeakerSystem•Installation 10 2. If seismic safety lines are being used, install them now . In addition to the tie off at 4c , Extron r ecommends tie offs on at least two at the four available tabs at 4e . See the illustration below .
SF228TSpeakerSystem•Reference 11 Specifications, Dimensions and Packaging This section discusses the specifications, part number , and packaging for the SF 228T speakers. T opics that ar e covered, include: • Specifications • Part Numbers • Dimensions • Packaging Specifications Audio/acoustic and electrical Speaker type .
SF228TSpeakerSystem•Reference 12 Vibration ........................................ IST A 1A in carton (International Safe T ransit Association) Regulatory compliance Safety .
SF228TSpeakerSystem•Reference 13 Dimensions SF 228T 5.30" 23.75" 23.75".
SF228TSpeakerSystem•Reference 14 Packaging Ceiling Tile Rails Speakers Protective Sheet T op Cap Bottom Cap End Cap Rail T ube SF 228T Setup Guide.
Extr on ® W arranty Extron Electr onics warrants this product against defects in materials and workmanship for a period of thr ee years from the date of pur chase.
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