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SF 228T Plus • Setup Guide
General Setup
The SF 228T Plus features a low profile design that houses an 8-inch woofer and 1-inch dome tweeter and has the appearance of
a standard ventilation grill. All drivers and components above the ceiling are hidden behind the grill.
The SF 228T Plus is used in plenum rated ceiling spaces and can be mounted into a standard 2 feet x 2 feet or 2 feet x 4 feet
(with supplied t-rail crosspieces) false ceiling tile space on a T-bar grid, or, a frame installed in solid ceilings.
Application Example
The following illustration shows one way to configure a system using the SF 228T Plus.
Extron
SF 228T Plus
Plenum 2' x 2'
Ceiling Speaker
Extron
SF 228T Plus
Plenum 2' x 2'
Ceiling Speaker
Wireless Mic 1
Wireless Mic 2
Figure 1.
SF 228T Plus Application Diagram
OVER
TEMP
1
2
LIMITER/PROTECT
SIGNAL
NetPA U 1002 SERIES
Audio Line
Inputs
Extron
WPD 101 3.5 mm
Single Gang
AUDIO
Pass-Through
Wallplate
Ethernet
Audio Line Outs
Assistive Listening
System Transmitter
1
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Table of Contents
Related Manuals for Extron electronics SF 228T Plus
Summary of Contents for Extron electronics SF 228T Plus
- Page 1 (with supplied t-rail crosspieces) false ceiling tile space on a T-bar grid, or, a frame installed in solid ceilings. Application Example The following illustration shows one way to configure a system using the SF 228T Plus. Extron SF 228T Plus...
- Page 2 Installing the Speakers CAUTION: • Installation and service must be performed by authorized personnel only. • L’installation et l’entretien doivent être effectués uniquement par du personnel autorisé Power down — Power down all attached devices before proceeding. Remove the suspended ceiling tile — Remove the ceiling tile where the SF 228T Plus will be installed and lay it aside. Remove the terminal cover plate —...
- Page 3 SF 228T Plus • Setup Guide (Continued) When using speaker wires without conduit — Secure the cable clamp adapter (included) to the cover plate and insert the wires through the clamp, (see the illustration below). Cable Clamp Secondary Knock-out Adapter (Included)
- Page 4 To wire additional speakers — Measure the distance between the two speakers intended installlation points, add an extra foot or third of a meter for safety, and cut that length in speaker wire cable. TIP: Estimate the distance by counting the number of 2 x 2 inch or 2 x 4 inch ceiling tiles. Remove the secondary knock-out from the terminal cover plate of the primary speaker, and route one end of the speaker cable through the secondary cable access opening.
- Page 5 SF 228T Plus • Setup Guide (Continued) Test the system by powering on the amplifier and listening for the correct response from the speakers. Disconnect the power from the amplifier. Completing the Installation NOTE: Observe all applicable building codes and local ordinances when installing the speaker.
- Page 6 If seismic safety lines are being used, install them now. In addition to the tie off at and , Extron recommends a tie off on at least one of the four available tabs at . See the illustration below. C C C Anchor the safety cables D D D to a suitable secure point.
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