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Summary of Contents for Extron electronics SF 8CT SUB
- Page 1 User Guide Speakers SF 8CT SUB SoundField 8” In-Ceiling Subwoofer 68-3512-01 Rev. C 07 21...
- Page 3 Copyright © 2021 Extron. All rights reserved. www.extron.com Trademarks All trademarks mentioned in this guide are the properties of their respective owners. The following registered trademarks ( ® ), registered service marks ( ), and trademarks ( ) are the property of RGB Systems, Inc. or Extron (see the current list of trademarks on the Terms of Use page at www.extron.com):...
- Page 4 FCC Class B Notice NOTE: This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.
- Page 5 Conventions Used in this Guide Notifications The following notifications are used in this guide: WARNING: Potential risk of severe injury or death. AVERTISSEMENT : Risque potentiel de blessure grave ou de mort. ATTENTION: • Risk of property damage. • Risque de dommages matériels. NOTE: A note draws attention to important information.
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Page 7: Table Of Contents
Contents Introduction ..........1 About this Guide ..........1 About the SF 8CT SUB ........1 Features .............. 2 Installation in a Suspended Ceiling....3 Installation Considerations ........3 Preparing the Installation Location ....... 3 Configuring the Speaker ........5 Mounting the Speaker ......... - Page 8 SF 8CT SUB • Contents viii...
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Page 9: Introduction
The subwoofer is intended for use in a bi-amplified system. Separate amplifiers should power the low and high frequencies. ATTENTION: The SF 8CT SUB is UL Listed for use in plenum airspaces: meets UL 2043 for • heat and smoke release. -
Page 10: Features
Side oriented cable/conduit access plate can be for connection clearance • • Opti-Torque indicator rings prevent overtightening of locking arm screws Four locking arms for quick ceiling installation • • UL 1480 listed for safety • 5-year parts and labor warranty SF 8CT SUB User Guide • Introduction... -
Page 11: Installation In A Suspended Ceiling
Installation in a Suspended Ceiling This section describes the installation and the operation of the SF 8CT SUB in a suspended ceiling (having ceiling tiles). Topics in this section include: Installation Considerations • • Preparing the Installation Location Configuring the Speaker •... - Page 12 C-ring V-rail Figure 3. Positioning the C-ring assembly on the V-rails Secure the C-ring to the V-rails using four screws. Route the speaker wires through the ceiling tile hole. SF 8CT SUB User Guide • Installation in a Suspended Ceiling...
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Page 13: Configuring The Speaker
Use a small screwdriver to pry and separate the insert from the locking arm, as shown below. Figure 5. Prying off the locking arm insert Repeat this process for the remaining three locking arms. Rotate all four locking arms back into the speaker. SF 8CT SUB User Guide • Installation in a Suspended Ceiling... - Page 14 Strip 0.2 inches (5 mm) from the wire ends. Attach the speaker wires to the captive screw connector depending on the configuration, as illustrated by the following three methods. SF 8CT SUB User Guide • Installation in a Suspended Ceiling...
- Page 15 Lors de la connexion de plusieurs enceintes en mode 8 ohm, assurez vous que le niveau d’impédance combinée ne soit pas équivalent à une valeur inférieure à l’impédance minimum de l’amplificateur. SF 8CT SUB User Guide • Installation in a Suspended Ceiling...
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Page 16: Mounting The Speaker
Location”) with the wires out of the way. Clamp the speaker to the C-ring by using a Phillips screwdriver to tighten the four locking arms to the C-ring (see figure 9). SF 8CT SUB User Guide • Installation in a Suspended Ceiling... - Page 17 Because fiberglass ceilings and other soft materials are not as rigid as mineral tiles and other hard materials, the Opti-Torque indicator ring must not to be used as a tightening guide due to the risk of overtightening. SF 8CT SUB User Guide • Installation in a Suspended Ceiling...
- Page 18 • Replace the adjacent ceiling tile that was removed in on page 4. step 4b Set the rotary tap selector switch to the appropriate setting using a small screwdriver. SF 8CT SUB User Guide • Installation in a Suspended Ceiling...
- Page 19 équivalent à une valeur inférieure à l’impédance minimum de l’amplificateur. 8Ω Adjust the Tap Selector Figure 13. Setting the rotary tap selector switch SF 8CT SUB User Guide • Installation in a Suspended Ceiling...
- Page 20 Figure 15. Installing the speaker grille NOTE: Specific test points can be used to troubleshoot speaker system problems. Should problems be encountered, please see Troubleshooting: Signal Test Points on page 19. SF 8CT SUB User Guide • Installation in a Suspended Ceiling...
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Page 21: Installation In A Hard Ceiling
Installation in a Hard Ceiling To install the SF 8CT SUB in a hard ceiling (having no ceiling tiles), with the ceiling structure in place, follow the steps in this section. Topics in this section include: • Preparing the Installation Location •... -
Page 22: Mounting The Speaker
Clamp the speaker to the C-ring by using a Phillips screwdriver to tighten the four locking arms to the C-ring. Figure 18. Clamping the speaker to the C-ring SF 8CT SUB User Guide • Installation in a Hard Ceiling... - Page 23 Lors de la connexion de plusieurs enceintes en mode 8 ohm, assurez vous • que le niveau d’impédance combinée ne soit pas équivalent à une valeur inférieure à l’impédance minimum de l’amplificateur. SF 8CT SUB User Guide • Installation in a Hard Ceiling...
- Page 24 LPF enabled. Disable the LPF if filtering is set on a device upstream of the speaker. The LPF is fixed at 120 Hz Figure 21. Setting the LPF selector switch SF 8CT SUB User Guide • Installation in a Hard Ceiling...
- Page 25 Figure 22. Installing the speaker grille NOTE: Specific test points can be used to troubleshoot speaker system problems. Should problems be encountered, please see Troubleshooting: Signal Test Points on page 19. SF 8CT SUB User Guide • Installation in a Hard Ceiling...
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Page 26: Reference Information
Apply an even coat across the entire front surface. • Be sure not to clog the grille holes. • Wait for the paint to dry. Reattach the scrim to the back of the grille. Reattach the grille to the speaker. SF 8CT SUB User Guide • Reference Information... -
Page 27: Troubleshooting: Signal Test Points
Red Wire (+) from Amplifier Amplifier To next speaker(s) Black Wire (-) from Amplifier Test Points Impedance Test Points Figure 25. Impedance Test Points — Loop-through Configuration SF 8CT SUB User Guide • Reference Information... - Page 28 Extron Warranty Extron warrants this product against defects in materials and workmanship for a period of three years from the date of purchase. In the event of malfunction during the warranty period attributable directly to faulty workmanship and/or materials, Extron will, at its option, repair or replace said products or components, to whatever extent it shall deem necessary to restore said product to proper operating condition, provided that it is returned within the warranty period, with proof of purchase and description of malfunction to: USA, Canada, South America,...
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