Extron electronics SF 28PT User Manual
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Extron electronics SF 28PT User Manual

Pendant speakers
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User Guide
Audio Speakers
SF 28PT
Pendant Speakers
68‑3531‑01 Rev. A
05 21

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Summary of Contents for Extron electronics SF 28PT

  • Page 1 User Guide Audio Speakers SF 28PT Pendant Speakers 68‑3531‑01 Rev. A 05 21...
  • Page 2 Safety Instructions Safety Instructions • English Instructions de sécurité • Français AVERTISSEMENT : Ce pictogramme, , lorsqu’il est utilisé sur le WARNING: This symbol, , when used on the product, is intended to produit, signale à l’utilisateur la présence à l’intérieur du boîtier du alert the user of the presence of uninsulated dangerous voltage within produit d’une tension électrique dangereuse susceptible de provoquer the product’s enclosure that may present a risk of electric shock.
  • Page 3 • 安全说明 简体中文 警告： 产品上的这个标志意在警告用户, 该产品机壳内有暴露的危险 电压， 有触电危险。 注意： 产品上的这个标志意在提示用户, 设备随附的用户手册中有重 要的操作和维护(维修)说明。 关于我们产品的安全指南、遵循的规范、EMI/EMF 的兼容性、无障碍使 用的特性等相关内容， 敬请访问 Extron 网站 , www.extron.com，参见 Extron 安全规范指南，产品编号 68-290-01 。 安全記事 • 繁體中文 안전 지침 • 한국어 경고: 이 기호 가 제품에 사용될 경우, 제품의 인클로저 내에 있는 警告: 若產品上使用此符號，...
  • 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: DANGER: • Will result in serious injury or death. • Entraînera des blessures graves ou la mort. ATTENTION: Risk of property damage. • • Risque de dommages matériels. NOTE: A note draws attention to important information.
  • Page 6 SF 28PT User Guide • Contents...

  • Page 7: Table Of Contents

    SF 28PT Application Example ......2 Installation ..........3 Installing the SF 28PT Speaker ......3 Setting the Tap Selection Switch ...... 4 Wiring the SF 28PT Speaker Assembly .... 5 Wiring the Amplifier/Previous Speaker....8 Wiring the Speaker .......... 9 Reference Information ......11 Optional Ceiling Bracket Kit .......
  • Page 8 SF 28PT User Guide • Contents viii...

  • Page 9: Introduction

    This guide describes the installation and set up of the SF 28PT pendant speaker. Overview The Extron SF 28PT speaker is a pendant speaker suspended by steel aircraft cables. The SF 28PT is paintable, and ideal for open and mixed ceiling applications.

  • Page 10: Sf 28Pt Application Example

    SMK C SF 26PT Ceiling Surface Mount Kits for 6-inch or larger pendant speakers, • in black or white — Used to surface mount an SF 28PT with a ceiling electrical box. • Optional SMK A Speaker Aircraft Cable Kits — Used to reduce lateral movement when required by local seismic codes, and when suspending the speaker between ceiling beams.

  • Page 11: Installation

    Installation This section describes the installation of the SF 28PT speaker and includes the following topic: WARNING: Risk of personal injury or property damage. The final installation should be able to continuously support the speaker weight. The final installation should also be able to support any short term overloading. Since applications can vary considerably, it is assumed that the installer will exercise good judgment when selecting the mounting location, method, and hardware.

  • Page 12: Setting The Tap Selection Switch

    Removing the Speaker Grille Use an Extron Tweeker or small screwdriver to set the tap selection switch to the desired position. 8Ω Adjust the Tap Selector Figure 4. Setting the Tap Selection Switch Replace the speaker grille. SF 28PT User Guide • Installation...

  • Page 13: Wiring The Sf 28Pt Speaker Assembly

    Wiring the Speaker Assembly The SF 28PT speaker system includes two speakers with removable top caps, a 30-foot length of PendantConnect-2 cable (that consists of two 30-foot lengths of steel support cable, and a 30-foot length of speaker wire), four cable locks, grille hook, and two removable grilles.
  • Page 14 N’utilisez pas de cisaille standard pour couper le câble en acier. Ce type de cisaille peut être endommagé lors de la coupe du câble en acier. Vous devez utiliser une pince coupe-câble adaptée à ce type de câble. SF 28PT User Guide • Installation...
  • Page 15 2 inches of all cable locks in any direction free of any other objects. • If the cable locks are within 2 inches of each other then they must be at the same height as each other (see figure 7). SF 28PT User Guide • Installation...

  • Page 16: Wiring The Amplifier/Previous Speaker

    3-pole splicing connectors mentioned in the previous step. The red amplifier/speaker wire connects to the splicing connector wired to the red speaker wire, and the black amplifier/speaker wire connects to the splicing connector wired to the black speaker wire. SF 28PT User Guide • Installation...

  • Page 17: Wiring The Speaker

    ( ) that is attached to the red wire coming from the speaker. Press the lever down to lock the red wire in place ( Repeat step three for the red/black wire. SF 28PT User Guide • Installation...
  • Page 18 3 3 3 2 2 2 Figure 11. 2-pole Splicing Connector The speaker wires are now connected at the back of the speaker. 2-Pole Splicing Connectors Figure 12. Speaker Wires Connection Replace the speaker cap. SF 28PT User Guide • Installation...

  • Page 19: Reference Information

    The optional SMK C SF 26PT Extron Ceiling Bracket Kit for 6-inch and larger pendant speakers allows the SF 28PT speaker assembly to be suspended from a junction box. The kit consists of a ceiling bracket and a matching magnetic cover (see figure 13).
  • Page 20 Strip off the cable at the strip point using value D in the previous step ( see figure 14, above) showing the dimensions of the SF 28PT. Route the free end of the PendantConnect-2 cable through the ceiling bracket cover (see figure 13,...

  • Page 21: Completing The Ceiling Bracket Installation

    Ceiling Bracket to Junction Box Attachment Attach the ceiling bracket cover onto the ceiling bracket, as shown above. Two small magnets secure the cover plate in place. Wiring the Speaker Wire the speaker (see on page 9). SF 28PT User Guide • Reference Information...

  • Page 22: Optional 2-Aircraft Cable Installation Kit

    To set the tap selection, see on page 4. The optional Extron SMK A 2C 2-aircraft cable installation kit allows the SF 28PT speaker to be suspended from 3 overhead points using the two included PendantConnect-2 steel cables and the two additional cables from the kit.

  • Page 23: Optional 4-Aircraft Cable Installation Kit

    NOTE: The speaker cap will have to remain attached while wiring the speaker. Optional 4-Aircraft Cable Installation Kit The optional Extron SMK A 4C 4-aircraft cable installation kit allows the SF 28PT speaker to be suspended from 4 overhead points or 5 overhead points (when also using the PendantConnect-2 cable).
  • Page 24 3-Pole Splicing Connectors Figure 19. Using 3-pole Splicing Connectors Wire the 3-pole splicing connectors for a loop-through configuration. NOTE: Each pole of the splicing connector is capable of accepting up to 12 AWG wire. SF 28PT User Guide • Reference Information...

  • Page 25: Five Mounting Points

    0° vertical position directly above the speaker is 45°. The angle between each of the 4 kit cables and its adjacent kit cable is 90°. SF 28PT User Guide • Reference Information...

  • Page 26: Measuring And Pre-Cutting Bulk Speaker Cable

    Determine the value of C that is the extra cable length needed to attach to or around the mounting structure. Calculate the total length using the following formula where “T” is the total length where T = A - B + C - 7.37 inches. SF 28PT User Guide • Reference Information...
  • Page 27 PendantConnect-2 Floor Cable Figure 22. Bulk Pendant Connect-2 Cable Cut Length Determine and mark the strip points, (see figure 21, E and F). Cut the cables using value T as the cut length. SF 28PT User Guide • Reference Information...

  • Page 28: Cutting Bulk Cable For The Optional Ceiling Bracket

    Measure the distance from from the floor to the bottom of the speaker at the planned hanging height (value B). The total cable length needed, T, can be calculated, as follows: T = A - B - 5.26 inches Cut the cable using T as the cut length. SF 28PT User Guide • Reference Information...
  • Page 29 (see the inset side view ) . Inserting the steel cable through the bottom of the cable lock locks the cable in place. Pressing the cable lock release unlocks the cable. SF 28PT User Guide • Reference Information...

  • Page 30: Painting The Speaker Grille

    Be sure not to clog the grille holes. • Wait for the paint to dry. Speaker Grille Reattach the cloth scrim that was removed in step 2 to the back of the grille. Reattach the Extron logo. Grille Hook SF 28PT User Guide • Reference Information...

  • Page 31: Painting The Speaker Enclosure

    Remove the grille from the speaker using the included grille hook (see the previous section for grille painting details). Mask the front baffle when painting the enclosure. Spray paint the enclosure with a plastics-safe paint. Wait for the paint to dry. Reattach the grille. SF 28PT User Guide • Reference Information...
  • Page 32 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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