3" Full-Range Ceiling Speakers Offer Fidelity and Ease of Installation
SF 3C LP & SF 3CT LP SoundField XD Speakers
SoundField XD ceiling speakers represent a new paradigm in speaker technology for pro AV applications. With innovative materials, modular construction, and unique features, these speakers provide significant savings and superior performance. We designed the SoundField XD ceiling speakers from the ground up.
The Extron SF 3C LP and SF 3CT LP 3” full range ceiling speakers feature a 4” deep low profile composite back can for plenum rated ceiling environments. They are ideal for installations with tight spaces above the ceiling caused by HVAC, plumbing, conduit, or other structures.
The ideal speaker enclosure needs to be constructed in such a way as to avoid internal standing waves and resonances in the enclosure itself. It should also be lightweight and rated for use in plenum air‑handling spaces. All of these requirements were acheieved by injection molding the enclosure with a fire resistant composite material. The result is a rigid, acoustically damped, lightweight plenum rated enclosure that is UL 2043 listed.
Shipped as a complete speaker assembly, SF 3C LP and SF 3CT LP ceiling speakers are ideal for both single-trade and division of labor installations. The complete speaker can be installed as a self-contained unit by a single contractor. For larger projects with multiple trades, the speaker baffle and back can are separable, allowing the rough-in contractor to install and fully terminate the back can. Once the job site is clean and secure, an AV integrator can then easily install the speaker baffle and grille.
Figure 2 — SF 3CT LP Back Can And Baffle
Magnetically Attached Modern Looking Grille
SF 3C LP and SF 3CT LP SoundField XD speakers feature a finely perforated round metal grille with a thin‑edged rounded bezel for a refined appearance on the ceiling. The grille securely attaches magnetically to the baffle and quickly snaps into place. An optional square grille is available with the same finely perforated metal and thin-edged rounded bezel to give the owner, architect, or interior designer an additional choice for matching the décor. The grille assemblies are white and can be painted to match the architectural elements of the environment.
Figure 3.1 — Included Round Grille
Figure 3.2 — Optional SGK SF3C Square Grille
Opti-Torque Indicator Ring
SF 3C LP and SF 3CT LP SoundField XD speakers feature exclusive Opti‑Torque™ indicator rings that provide a visual indication when the locking arm screws have been sufficiently tightened, preventing damage to the speaker caused by overtightening. As the installation technician tightens the locking arms, the red Opti-Torque™ indicator ring will audibly snap when the proper torque has been applied. The red ring drops down onto the screw-driver shaft, signaling to the technician that the proper force has been applied.
Figure 6 — Opti-Torque Indicator Ring
Modular V-Rails and Foldable C‑Rings
To facilitate installation in a T‑bar ceiling, newly redesigned modular V-rails and foldable C‑rings are included with SF 3C LP and SF 3CT LP SoundField XD ceiling speakers. The V‑rails have been designed as a two‑part assembly that are snapped together in the field. The foldable C‑rings have been designed to make them easier to maneuver into place, even in blind-mount drywall applications. The installer snakes the C‑ring up through the speaker cut‑out, unfolds it, and positions it as needed. The result is a continuous metal support around the entire cut‑out, resulting in a more secure attachment to the ceiling.
Figure 7 — V-RailFigure 8 — C-Rings
Cable/Conduit Access Plate
The cable/conduit access plate is used to bring speaker cable into the enclosure, whether free‑pulled or through flex conduit. The cable/conduit access plate has two punch-outs for 1/2” conduit, flex, or screw clamp fittings. Two punch‑outs allow easy daisy chaining from speaker to speaker. The cable/conduit access plate can be oriented for side mount or top mount. The side mount orientation allows cable/flex/conduit to enter into the side of the enclosure, without increasing the overall 4" depth of the speaker. The top mount orientation allows for blind-mounting into drywall ceilings, keeping all cable/flex/conduit connections on the top.
Top mount orientation
Install Cable/Conduit Access Plate
Mount Speaker in Ceiling
Install Grille
Side mount orientation
Mount Speaker in Ceiling
Install Cable/Conduit Access Plate
Install Grille
Application Diagram
In this school application, program audio is routed from Dante sources to the NetPA 204 POE, where it is processed for optimal playback quality. The amplified audio is then sent to SF 3C LP ceiling speakers. The contact closure connection on the NetPA 204 POE allows the relay output from a PPC 25 priority page controller to temporarily mute program audio when the public address system is being used to push live notifications into an emergency speaker.
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