SF 26CT - Speaker Extron - Free user manual and instructions

Product Type	Two-Way Ceiling Speaker
Woofer	6.5" (165 mm) Long Throw
Tweeter	3/4" (19 mm) Ferrofluid-Cooled Dome
Back Can	8" (203 mm) Deep Composite, Plenum Rated
Frequency Range	65 Hz to 22 kHz, -10 dB Half Space
Coverage Angle	111° Conical
Power Handling	65 W Continuous Pink Noise, 130 W Continuous Program
Impedance / Tap Settings	8 Ohm Direct; 70V: 64, 32, 16, 8 W; 100V: 64, 32, 16 W
Grille	Magnetically Attached, Paintable White, Thin Bezel
Mounting System	V-Rail and Folding C-Ring Kit, Four Locking Arms with Opti-Torque
Certifications	UL 2043 Plenum, UL 1480
Warranty	5 Years Parts and Labor

Frequently Asked Questions - SF 26CT Extron

What is the impedance of the Extron SF 26CT speaker?

The SF 26CT operates at 8 ohms direct or can be set for 70/100V operation with selectable tap settings.

How do I configure the speaker for 70V or 100V systems?

Use a small screwdriver to adjust the rotary tap selector switch located behind the grille. For 70V, select 64, 32, 16, or 8 watts; for 100V, select 64, 32, or 16 watts.

Can the grille be painted?

Yes, the white grille can be painted with a plastic-friendly spray paint. Remove the grille and scrim, paint only the front side, and reattach after drying.

What is the Opti-Torque indicator ring used for?

The Opti-Torque indicator ring releases a red plastic ring onto the screwdriver when the correct torque is reached, preventing overtightening of the locking arms.

Is the SF 26CT suitable for plenum spaces?

Yes, the composite back can is UL 2043 plenum rated for smoke and heat release, making it safe for plenum air spaces.

What is the warranty on this speaker?

Extron provides a 5-year parts and labor warranty against defects in materials and workmanship.

How do I wire multiple SF 26CT speakers?

You can wire them in loop-through (series) or parallel. Loop-through disconnects downstream speakers if one is removed; parallel does not. Ensure total impedance does not fall below the amplifier's minimum rating in 8-ohm mode.

What tools are needed for installation?

You will need a Phillips screwdriver for locking arms and a flat head screwdriver for the tap selector and back can screws. A small screwdriver is needed for prying off locking arm inserts.

Can the speaker be installed in a hard ceiling?

Yes, for hard ceilings use the C-ring assembly inserted through the cut hole, then mount the speaker with locking arms.

What is the coverage pattern of the SF 26CT?

The speaker has a 111° conical dispersion, providing wide, even coverage for ceiling-mounted applications.

USER MANUAL SF 26CT Extron

SoundField® XD 6.5" Two-Way Ceiling Speaker with 8" Composite Back Can

Two circular electronic devices side by side: one with hexagonal grid pattern and red buttons, the other with mesh grille (no visible text or symbols)

SoundField XD

Extron

68-2223-01 Rev. C 01 19

Safety Instructions

Safety Instructions • English

WARNING: This symbol, ,when used on the product, is intended to alert the user of the presence of uninsulated dangerous voltage within the product's enclosure that may present a risk of electric shock.

ATTENTION: This symbol, when used on the product, is intended to alert the user of important operating and maintenance (servicing) instructions in the literature provided with the equipment.

For information on safety guidelines, regulatory compliances, EMI/EMF compatibility, accessibility, and related topics, see the Extron Safety and Regulatory Compliance Guide, part number 68-290-01, on the Extron website, www.extron.com.

© 2016-2019 Extron Electronics. All rights reserved.

Trademarks

All trademarks mentioned in this guide are the properties of their respective owners. The following registered trademarks ( ^® ), registered service marks ( ^SM ), and trademarks ( ^TM ) are the property of RGB Systems, Inc. or Extron Electronics (see the current list of trademarks on the Terms of Use page at www.extron.com):

Registered Trademarks (®)

Extron, Cable Cubby, ControlScript, CrossPoint, DTP, eBUS, EDID Manager, EDID Minder, Flat Field, FlexOS, Glitch Free. Global Configurator, Global Scripter, GlobalViewer, Hideaway, HyperLane, IP Intercom, IP Link, Key Minder, LinkLicense, LockIt, MediaLink, MediaPort, NetPA, PlenumVault, PoleVault, PowerCage, PURE3, Quantum, Show Me, SoundField, SpeedMount, SpeedSwitch, StudioStation, System INTEGRATOR, TeamWork, TouchLink, V-Lock, VideoLounge, VN-Matrix, VoiceLift, WallVault, WindoWall, XTP, XTP Systems, and ZipClip

Registered Service Mark ^(SM) : S3 Service Support Solutions

Trademarks ^(TM)

AAP, AFL (Accu-Rate Frame Lock), ADSP (Advanced Digital Sync Processing), Auto-Image, CableCover, CDRS (Class D Ripple Suppression), Codec Connect, DDSP (Digital Display Sync Processing), DMI (Dynamic Motion Interpolation), Driver Configurator, DSP Configurator, DSVP (Digital Sync Validation Processing), eLink, EQIP, Everlast, FastBite, FOX, FOXBOX, IP Intercom HelpDesk, MAAP, MicroDigital, Opti-Torque, PendantConnect, ProDSP, QS-FPC (QuickSwitch Front Panel Controller), Room Agent, Scope-Trigger, SharePoint, SIS, Simple Instruction Set, Skew-Free, SpeedNav, Triple-Action Switching, True4K, Vector™ 4K, WebShare, XTRA, and ZipCaddy

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. The Class A limits provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause interference; the user must correct the interference at his own expense.

NOTE: For more information on safety guidelines, regulatory compliances, EMI/EMF compatibility, accessibility, and related topics, see the “Extron Safety and Regulatory Compliance Guide” on the Extron website.

Conventions Used in this Guide

Notifications

The following notifications are used in this guide:

WARNING: Potential risk of severe injury or death.

NOTE: A note draws attention to important information.

Specifications Availability

Product specifications are available on the Extron website, www.extron.com.

Extron Glossary of Terms

A glossary of terms is available at http://www.extron.com/technology/glossary.aspx.

Contents

Introduction.... 1

Overview 1

Features .... 1

Application Example 2

Installation in a Suspended Ceiling (Single Installer) 3

Installation Considerations .... 3

Preparing the Installation Location 3

Configuring the Speaker 5

Mounting the Speaker 10

Installation in a Suspended Ceiling (Division of Labor)....14

Getting Started....14

Preparing the Installation Location 15

Configuring the Speaker 15

Mounting the Speaker Enclosure 16

Installation in a Hard Ceiling....22

Preparing the Installation Location 22

Configuring the Speaker 22

Mounting the Speaker 23

Reference Information 26

Painting the Speaker Grille....26

Troubleshooting: Signal Test Points......27

Testing Source Signal (All Configurations).....27

Testing the Impedance (Loop-Through Configuration Only) 27

Introduction

This section gives an overview of the Extron SF 26CT SoundField ^® XD 2-way speaker. Topics include:

• Overview
• Features
  • Application Example

Overview

The Extron SoundField ^® XD SF 26CT is a two-way ceiling speaker featuring an 8" (203 mm) composite back can for use in plenum rated ceiling environments. With the industry's first UL 2043 listed composite speaker enclosure, the SF 26CT meets stringent UL requirements for smoke and heat release in plenum air spaces. The SF 26CT features a 6.5" woofer, 3/4" tweeter, and 8" back can. Its coverage angle is 111°. It has a frequency range of 65 Hz to 22 kHz.

Features

• 6.5" (165 mm) long throw woofer with a tuned bass reflex enclosure
• 3/4" (19 mm) ferrofluid-cooled dome tweeter
• 8" (203 mm) deep composite back can for plenum environments
  • Frequency range: 65 Hz to 22 kHz, -10 dB, half space
• 111^ conical dispersion
• 65 watts continuous pink noise, 130 watts continuous program
• 8 ohm direct or 70/100 volt operation on a 6 position, behind-the-grille selector
• 8 ohm direct
  • 70 volt: 64, 32, 16, and 8 watt selectable
  • 100 volt: 64, 32, and 16 watt selectable
• Magnetically attached grille with a thin bezel for a refined appearance
• Grille and bezel are white and can be painted to match any environment
• Separable back can and baffle supports both single-trade and division-of-labor applications
• Modular V-rail and folding C-ring kit included
• Cable/conduit access plate can be oriented for side or top connections
• Opti-Torque indicator rings prevent overtightening of locking arm screws
• Four locking arms for quick ceiling installation
  • UL 2043 plenum rated enclosure
  • UL 1480 listed for safety
• 5-year parts and labor warranty

Application Example

The application diagram below shows one way to configure a system using the SF 26CT.

graph TD
    A["Extron SF 26CT Full-Range Ceiling Speakers"] --> B["Conference Table"]
    B --> C["Table Microphones"]
    B --> D["Table Microphones"]
    B --> E["Audio"]
    E --> F["Credenza"]
    F --> G["Extron DMP 128 Plus C V Digital Matrix Processor"]
    G --> H["DMP EXP"]
    H --> I["PC"]
    I --> J["USB Audio"]
    I --> K["HDMI"]
    K --> L["Camera"]
    L --> M["Flat Panel Display"]
    M --> N["Extron DTP CrossPoint 82 4K IPCP MA Scaling Presentation Matrix Switcher"]
    N --> O["Extron TLP Pro 1020T 10" Tabletop TouchLink Pro Touchpanel"]
    O --> P["Laptop"]
    P --> Q["HDMI"]
    Q --> R["Extron DTP T USW 233 Transmitter"]
    R --> S["Extron DTP T USW 233 Transmitter"]
    S --> T["Extron TF 1020T"]
    T --> U["Extron TF 1020T"]
    U --> V["Extron TF 1020T"]
    V --> W["Extron TF 1020T"]
    W --> X["Extron TF 1020T"]
    X --> Y["Extron TF 1020T"]
    Y --> Z["Extron TF 1020T"]
    Z --> AA["Extron TF 1020T"]
    AA --> AB["Extron TF 1020T"]
    AB --> AC["Extron TF 1020T"]
    AC --> AD["Extron TF 1020T"]
    AD --> AE["Extron TF 1020T"]
    AE --> AF["Extron TF 1020T"]
    AF --> AG["Extron TF 1020T"]
    AG --> AH["Extron TF 1020T"]
    AH --> AI["Extron TF 1020T"]
    AI --> AJ["Extron TF 1020T"]
    AJ --> AK["Extron TF 1020T"]
    AK --> AL["Extron TF 1020T"]
    AL --> AM["Extron TF 1020T"]
    AM --> AN["Extron TF 1020T"]
    AN --> AO["Extron TF 1020T"]
    AO --> AP["Extron TF 1020T"]
    AP --> AQ["Extron TF 1020T"]
    AQ --> AR["Extron TF 1020T"]
    AR --> AS["Extron TF 1020T"]
    AS --> AT["Extron TF 1020T"]
    AT --> AU["Extron TF 1020T"]
    AU --> AV["Extron TF 1020T"]
    AV --> AW["Extron TF 1020T"]
    AW --> AX["Extron TF 1020T"]
    AX --> AY["Extron TF 1020T"]
    AY --> AZ["Extron TF 1020T"]
    AZ --> BA["Extron TF 1020T"]
    BA --> BB["Extron TF 1020T"]
    BB --> BC["Extron TF 1020T"]
    BC --> BD["Extron TF 1020T"]
    BD --> BE["Extron TF 1020T"]
    BE --> BF["Extron TF 1020T"]
    BF --> BG["Extron TF 1020T"]
    BG --> BH["Extron TF 1020T"]
    BH --> BI["Extron TF 1020T"]
    BI --> BJ["Extron TF 1020T"]
    BJ --> BK["Extron TF 1020T"]
    BK --> BL["Extron TF 1020T"]
    BL --> BM["Extron TF 1020T"]
    BM --> BN["Extron TF 1020T"]
    BN --> BO["Extron TF 1020T"]
    BO --> BP["Extron TF 1020T"]
    BP --> BQ["Extron TF 1020T"]
    BQ --> BR["Extron TF 1020T"]
    BR --> BS["Extron TF 1020T"]
    BS --> BT["Extron TF 1020T"]
    BT --> BU["Extron TF 1020T"]
    BU --> BV["Extron TF 1020T"]
    BV --> BW["Extron TF 1020T"]
    BW --> BX["Extron TF 1020T"]
    BX --> BY["Extron TF 1020T"]
    BY --> BZ["Extron TF 1020T"]
    BZ --> CA["Extron TF 1020T"]
    CA --> CB["Extron TF 1020T"]
    CB --> CC["Extron TF 1020T"]
    CC --> CD["Extron TF 1020T"]
    CD --> CE["Extron TF 1020T"]
    CE --> CF["Extron TF 1020T"]
    CF --> CG["Extron TF 1020T"]
    CG --> CH["Extron TF 1020T"]
    CH --> CI["Extron TF 1020T"]
    CI --> CJ["Extron TF 1020T"]
    CJ --> CK["Extron TF 1020T"]
    CK --> CL["Extron TF 1020T"]

Figure 1. SF 26CT Application Diagram

Installation in a Suspended Ceiling (Single Installer)

If a single installer is installing the SF 26CT speaker system, follow the steps in this section. Topics in this section include:

• Installation Considerations
• Preparing the Installation Location
- Configuring the Speaker
- Mounting the Speaker

Installation Considerations

WARNING: Potential risk of severe injury. Installation and service must be performed by authorized personnel only.

• All wiring and electrical connections must conform to all applicable building codes and local ordinances.
  • Installation in a plenum-rated environment requires plenum-rated cable or conduit.
• If using secondary support cables, the installer provides the cables.

Preparing the Installation Location

1. Power down all attached devices before proceeding.
2. Ensure that there is sufficient clearance above the ceiling tile for the unit to be installed.
3. Cut a hole for the speaker. Use the provided cutout template to outline the hole to be cut in the ceiling tile as described below.

a. Remove the ceiling tile.
b. To find the center of the tile, use a tape measure to measure the space between two opposite corners, and mark the half-way point.

c. Position the center hole of the cutout template directly over the center of the tile that you marked in step 3b.

d. Using the provided cutout template, trace a circle around the cutout template.

e. Cut out the circle traced on the ceiling tile.

f. Replace the tile in the ceiling.

1. Attach two V-rails and one C-ring across the tile above the hole cut in step 3, as shown below:

a. Assemble two V-rail half sections as follows: fit the tab of one end into the slot of the other end, then open the V-rail until it locks together (see figure 2). Repeat this procedure for the other V-rail.

Technical illustration of a metal frame assembly with red arrows indicating motion, showing structural changes and component details (no text or symbols)

Figure 2. Assembling the V-rails

b. Remove a ceiling tile adjacent to the tile with the hole.
c. Place both assembled V-rails on the cut ceiling tile and position them equally on either side of the hole. The ends of the V-rails go over the ceiling grid.
d. Position the C-ring assembly on the two V-rails so that the C-ring is centered over the hole, as shown below.

Figure 3. Positioning the C-ring assembly on the V-rails

e. Secure the C-ring to the V-rails using two screws.

1. Route the speaker wires through the ceiling tile hole.

Configuring the Speaker

1. Configure the locking arms for thicker ceilings (optional).

Four speaker locking arms are used to secure the speaker to ceiling tiles up to 2.25 inches (5.72 cm) thick. The locking arms are equipped with removable inserts to accommodate ceiling tiles of up to 1.5 inches (3.81 cm) in thickness. For ceiling tiles thicker than 1.5 inches, the locking arm inserts must be removed.

To remove the inserts:

a. Using a screwdriver, rotate the locking arm so that the insert can be accessed.

Figure 4. Accessing the locking arm insert

b. Use a small screwdriver to pry and separate the insert from the locking arm, as shown below.

Diagram showing screwdriver inserted into a socket, with a close-up of the socket being inserted (no text or symbols present)

Figure 5. Prying off the locking arm insert

c. Repeat this process for the remaining three locking arms.
d. Rotate all four locking arms back into the speaker.

2. Configure the cable/conduit access plate and captive screw connector:

Loosen the two side access plate screws and remove the plate before wiring the speaker.

Figure 6. Removing the cable/conduit access plate

3. Configure the access plate:

• If not using conduit: Route the speaker wires through the cable clamp.
- If using conduit: Remove the cable clamp and install the conduit into the plate opening. Secure the conduit to the plate with the locking nut and pull the speaker wires from the conduit.

NOTE: The cover plate has an alternate hole available by removing the knockout.

1. Strip 0.2 inches (5 mm) from the wire ends.

2. Attach the speaker wires to the captive screw connector depending on the configuration, as illustrated by the following three methods.

Wiring Multiple Speakers Using Loop-through

When a chain of speakers is wired this way, disconnecting one speaker removes power from all downstream speakers.

graph TD
    A["Power Amplifier"] --> B["Speaker 1"]
    B --> C["Speaker 2"]
    C --> D["Red (Red)"]
    C --> E["Black (Black)"]
    D --> F["Black (Black)"]
    E --> G["Black (Black)"]
    F --> H["Feedback to Speaker 1"]
    G --> I["Feedback to Speaker 2"]

Wiring Multiple Speakers in Parallel

When a chain of speakers is wired this way, disconnecting one speaker does not remove power from the remaining speakers in the chain.

graph TD
    A["Power Amplifier"] --> B["Speaker 1"]
    B --> C["Speaker 2"]
    C --> D["Red (Red)"]
    C --> E["Black (Black)"]
    D --> F["Red (Red)"]
    E --> G["Black (Black)"]
    F --> H["Red (Red)"]
    G --> I["Black (Black)"]
    H --> J["Red (Red)"]
    I --> K["Black (Black)"]
    J --> L["Red (Red)"]
    K --> M["Black (Black)"]
    L --> N["Red (Red)"]
    M --> O["Black (Black)"]
    N --> P["Red (Red)"]
    O --> Q["Black (Black)"]
    P --> R["Red (Red)"]
    Q --> S["Black (Black)"]

Wiring a Single Speaker

graph TD
    A["Power Amplifier"] --> B["(Red)"]
    A --> C["(Black)"]
    B --> D["Speaker 1"]
    C --> D
    D --> E["Digital Display"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#ccf,stroke:#333
    style D fill:#cfc,stroke:#333

Wire Gauge Table

Number of Wires per Connection Point	Maximum Wire Gauge
1	12 AWG
2	16 AWG
4	18 AWG

ATTENTION:

- Do not tin the wire leads before installing into the connector. Tinned wires are not as secure in the connector and could be pulled out.

- When connecting multiple speakers in 8-ohm mode, be sure that the combined rated impedance does not equal a value less than the minimum rated impedance of the amplifier.

1. Insert the captive screw plug into the four-pole receptacle of the speaker.

• Using a cable clamp on the access plate:

Technical line drawing of a mechanical assembly with a connector and housing (no text or symbols)

Figure 7. Using a cable clamp

• Using a conduit adapter on the access plate:

Figure 8. Using a conduit adapter

1. Replace the access plate and tighten the two retaining screws.

NOTE: The access plate can be positioned in one of two ways depending on installer preference. For example:

• The side access wire opening may be useful when space above the ceiling is limited.
  • The top access wire opening may be more convenient to use.

Technical line drawing of two mechanical components with mounting holes and a rotation arrow (no text or symbols)

Before tightening the screws, flip the cover to the desired position with the wire openings either on the side or on the top of the speaker enclosure.

1. Tighten the cable clamp if it was used.

Mounting the Speaker

The speaker can be installed into rigid material (mineral tile, gypsum board, sheetrock, etc.) or soft material, such as fiberglass.

1. Insert the speaker through the bottom of the hole in the ceiling tile that was cut in step 3 on page 3 ("Preparing the Installation Location") with the wires out of the way.

2. 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 and the Note below).

NOTE: The screw hole locations are marked on the front baffle with a Phillips-head screw symbol. Use these holes to tighten the locking arms.

Figure 9. Clamping the speaker to the C-ring

Tightening the locking arms into rigid material:

For rigid material use the Opti-Torque™ indicator ring as a tightening guide.

NOTE: Each of the four locking arm screws uses an Opti-Torque™ indicator ring. The indicator releases a red plastic ring onto the screwdriver once the screw is tightened to the correct torque. Stop tightening any further when this occurs to avoid overtightening the locking arms to the C-ring.

Figure 10. Stop tightening when the red ring falls

ATTENTION:

Tightening the locking arms into soft material:

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 be used as a tightening guide due to the risk of overtightening.

ATTENTION:

Diagram showing two mechanical assembly states with a cross symbol indicating a defect or failure (no text or labels present)

1. If required, attach a secondary support line.

a. Connect a secondary support line to the support loop on the back of the speaker enclosure, as shown here.

Anchor end to suitable secure points within the solid and permanent building structure.

Figure 11. Connecting a secondary support line

ATTENTION:

b. Replace the adjacent ceiling tile that was removed in step 4b on page 4.

1. Set the rotary tap selector switch to the appropriate setting using a small screwdriver.

ATTENTION:

Figure 12. Setting the rotary tap selector switch

1. Install the grille. Position the grille so that it covers the baffle of the speaker. Six small magnets secure the grille in place.

Figure 13. Installing the 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 27.

Installation in a Suspended Ceiling (Division of Labor)

For a division of labor installation, follow the steps in this section. In a division of labor installation, low-voltage contractors first install the speaker back can enclosure (construction rough-in phase). After the back can has been installed, the second phase of the installation can begin by installing the speaker assembly to the back can.

Topics in this section include:

• Getting Started
• Preparing the Installation Location
- Configuring the Speaker
- Mounting the Speaker

Getting Started

1. Using a flat head screwdriver, completely loosen the four screws holding the speaker assembly to the back can enclosure from the speaker, as shown below.

NOTE: The screws are not removable. They will unscrew completely, but will not pull out.

NOTE: Notches are provided to help pry the speaker assembly from the back can.

Figure 14. Unscrewing the speaker assembly from the back can

1. Carefully separate the speaker assembly from the back can, as shown below.

NOTE: Disconnect the speaker wires from the speaker assembly before completely separating the speaker assembly from the back can.

Technical line drawing of a mechanical device with top and side views, showing internal components and wiring (no text or symbols)

Figure 15. Separating the speaker assembly from the back can

1. Repeat steps 1 and 2 for each speaker in the system and distribute the components to the appropriate installers.

Preparing the Installation Location

Follow the steps in Preparing the Installation Location on page 3.

Configuring the Speaker

Follow the steps in Configuring the Speaker on page 5.

Mounting the Speaker Enclosure

1. Mount the speaker back can enclosure.

a. Insert the back can through the bottom of the hole in the ceiling tile that was cut with the wires out of the way.

Technical diagram of a cylindrical device with wiring and a red arrow indicating direction (no text or symbols)

Figure 16. Inserting the speaker back can

b. Clamp the back can to the C-ring by using a Phillips screwdriver to tighten the four locking arms to the C-ring.

Diagram of a ceiling lamp with a screwdriver and cable, showing internal components and a red rotation indicator (no text or symbols)

Figure 17. Tightening the locking arms

Tightening the locking arms into rigid material:

For rigid material use the Opti-Torque™ indicator ring as a tightening guide.

NOTE: Each of the four locking arm screws uses an Opti-Torque™ indicator ring. The indicator releases a red plastic ring onto the screwdriver once the screw is tightened to the correct torque. Stop tightening any further when this occurs to avoid overtightening the locking arms to the C-ring.

Figure 18. Stop tightening when the red ring falls

ATTENTION:

Tightening the locking arms into soft material:

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 be used as a tightening guide due to the risk of overtightening.

ATTENTION:

Diagram showing two mechanical or structural configurations with a central cross symbol (no text or labels)

1. If required, attach a secondary support line.

a. Connect a secondary support line to the support loop on the the back of the back can, as shown here.

Figure 19. Connecting a secondary support line

ATTENTION:

b. Replace the adjacent ceiling tile that was removed in step 4b on page 4.

1. Repeat steps 1 and 2 for each speaker being installed.
2. Attach the speaker assembly to the back can enclosure.

a. Connect the speaker wires from the back can enclosure to the speaker assembly.

Technical diagram showing a ceiling-mounted electrical component with internal wiring and a grid-patterned base (no text or symbols)

Figure 20. Connecting speaker wires to the speaker assembly

b. Rotate the speaker assembly so that the white arrows on the back can enclosure and the speaker assembly are aligned with each other, and insert the speaker assembly into the back can. Make sure that the speaker wires do not get in the way or become pinched.
c. Using a flat head screwdriver, tighten the four screws that attach the speaker assembly to the back can.

Figure 21. Attaching the speaker to the back can

1. Set the rotary tap selector switch to the appropriate setting using a small screwdriver (see figure 22).

ATTENTION:

Figure 22. Setting the rotary tap selector switch

1. Install the grille. Position the grille so that it covers the baffle of the speaker. Six small magnets secure the grille in place.

Figure 23. Installing the 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 27.

Installation in a Hard Ceiling

To install the SF 26CT 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
- Configuring the Speaker
- Mounting the Speaker

Preparing the Installation Location

1. Power down all attached devices before proceeding.

2. Cut a hole for the speaker. Use the provided cutout template to outline the hole to be cut in the ceiling as described below.
   a. Mark the location on the ceiling where the center of the speaker will be placed.
   b. Position the center hole of the cutout template directly over the center mark.
   c. Trace a circle around the cutout template.
   d. Cut out the traced circle.

3. Fold one C-ring assembly in half and insert it through the hole in the ceiling.

4. Unfold the C-ring and center it over the hole with the flat side down.

Metallic ring component with two side brackets and a small protrusion, no visible text or symbols

Figure 24. Installing the C-ring

1. Route the speaker wires through the ceiling hole.

Configuring the Speaker

Follow the steps in Configuring the Speaker on page 5.

Mounting the Speaker

1. If required, attach a secondary support line.

Connect a secondary support line to the support loop on the back of the speaker enclosure, as shown here.

Figure 25. Connecting a secondary support line

1. With the wires out of the way, insert the speaker through the bottom of the hole in the ceiling that was cut in step 2 on the previous page.

2. Clamp the speaker to the C-ring by using a Phillips screwdriver to tighten the four locking arms to the C-ring.

Figure 26. Clamping the speaker to the C-ring

NOTE: Each of the four locking arm screws uses an Opti-Torque™ indicator ring. The indicator releases a red plastic ring onto the screwdriver once the screw is tightened to the correct torque. Stop tightening any further when this occurs to avoid overtightening the locking arms to the C-ring.

Figure 27. Stop tightening when the red ring falls

ATTENTION:

1. Set the rotary tap selector switch to the appropriate setting using a small screwdriver (see figure 28 on the next page).

ATTENTION:

Figure 28. Setting the rotary tap selector switch

1. Install the grille. Position the grille so that it covers the baffle of the speaker. Six small magnets secure the grille in place.

Figure 29. 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 27.

Reference Information

This section covers the following topics:

• Painting the Speaker Grille
- Troubleshooting

Painting the Speaker Grille

The speaker grille can be painted using spray paint. Ensure that the spray paint is plastic friendly and adheres to both metal and plastic.

NOTE: Extron is not responsible for any alterations to the original paint.

To paint the grille:

1. Remove the grille from the speaker.

Figure 30. Removing the speaker grille

1. Remove and set aside the scrim from the back side of the grille.
2. Spray paint the front side of the grille.

NOTES:

• Do not paint the back side of the grille.
• 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.

Troubleshooting: Signal Test Points

The following signal test points can be used to troubleshoot speaker system problems.

Testing Source Signal (All Configurations)

The source signal can be tested by connecting to the inner + (IN) and - (IN) terminals of the captive screw connector.

graph TD
    A["Amplifier"] --> B["Red Wire (+) from Amplifier"]
    A --> C["Black Wire (-) from Amplifier"]
    C --> D["Test Points"]

Figure 31. Signal Test Points — Parallel Configuration

Testing the Impedance (Loop-Through Configuration Only)

The impedance of the speakers downstream of the one being tested can be measured while the system is on. To do this, connect to the outer (LOOP) terminals of the captive screw connector, as shown below.

graph TD
    A["Amplifier"] --> B["Red Wire (+) from Amplifier"]
    A --> C["Black Wire (-) from Amplifier"]
    C --> D["Test Points"]
    D --> E["To next speaker(s)"]
    E --> F["Output"]

Figure 32. Impedance Test Points — Loop-through Configuration

Extron Warranty

Extron Electronics warrants this product against defects in materials and workmanship for a period of five years from the date of purchase. In the event of malfunction during the warranty period attributable directly to faulty workmanship and/or materials, Extron Electronics 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, and Central America:

Extron Electronics

1230 South Lewis Street

Anaheim, CA 92805

U.S.A.

Japan:

Extron Electronics, Japan

Kyodo Building, 16 Ichibancho

Chiyoda-ku, Tokyo 102-0082

Japan

Europe and Africa:

Extron Europe

Hanzeboulevard 10

3825 PH Amersfoort

The Netherlands

China:

Extron China

686 Ronghua Road

Songjiang District

Shanghai 201611

China

Asia:

Extron Asia Pte Ltd

135 Joo Seng Road, #04-01

PM Industrial Bldg.

Singapore 368363

Singapore

Middle East:

Extron Middle East

Dubai Airport Free Zone

F13, PO Box 293666

United Arab Emirates, Dubai

This Limited Warranty does not apply if the fault has been caused by misuse, improper handling care, electrical or mechanical abuse, abnormal operating conditions, or if modifications were made to the product that were not authorized by Extron.

NOTE: If a product is defective, please call Extron and ask for an Application Engineer to receive an RA (Return Authorization) number. This will begin the repair process.

USA: 714.491.1500 or 800.633.9876

Europe: 31.33.453.4040

Asia: 65.6383.4400

Japan: 81.3.3511.7655

Units must be returned insured, with shipping charges prepaid. If not insured, you assume the risk of loss or damage during shipment. Returned units must include the serial number and a description of the problem, as well as the name of the person to contact in case there are any questions.

Extron Electronics makes no further warranties either expressed or implied with respect to the product and its quality, performance, merchantability, or fitness for any particular use. In no event will Extron Electronics be liable for direct, indirect, or consequential damages resulting from any defect in this product even if Extron Electronics has been advised of such damage.

Please note that laws vary from state to state and country to country, and that some provisions of this warranty may not apply to you.