SoundField XD 6.5" Two-Way Ceiling Speaker with 8" Composite Back Can and 70/100 V Transformer

The Extron SoundField® XD model SF 26CT is a 6.5" two-way ceiling speaker featuring an 8" (203 mm) deep composite back can for use in plenum rated ceiling environments. The driver complement includes a 6.5" (165 mm) woofer coupled to a 3/4" (19 mm) ferrofluid-cooled dome tweeter. With the AV 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. A magnetically attached grille with a thin-edged bezel gives the SF 26CT a refined appearance on the ceiling. The SF 26CT offers both direct 8 ohm and 70/100 volt operation with a behind-the-grille, six position power selector switch. With 70/100 volt taps at 8, 16, 32, and 64 watts, the SF 26CT can be used in applications where a high power distributed speaker system is needed.

The SF 26CT provides a wider and smoother frequency range of 65 Hz to 22 kHz and is engineered with a 111° conical dispersion that ensures excellent on and off axis voice intelligibility. A power rating of 130 watts continuous program also gives this speaker plenty of headroom for music reproduction in moderate to high output systems.

The Ceiling Speaker Reimagined

The SF 26CT represents a new paradigm in speaker technology for pro AV applications. We designed the SF 26CT from the ground up. With innovative materials, modular construction, and unique features, these new SoundField XD speakers provide significant savings and superior performance.

Scientific lab

Plenum Rated Composite Enclosure

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 fire tested for use in plenum air-handling spaces. We were able to achieve all of these requirements 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.

Supports Division of Labor and Single Trade

Shipped as a complete speaker assembly, the SF 26CT is ideal for both single-trade and division-of-labor installations. The SF 26CT speaker can be installed by a single contractor as a self-contained unit for retrofits and new construction. For larger projects with multiple trades, the speaker back can and speaker baffle can be separated, allowing the rough-in contractor to install and fully terminate the back can. Once the job site is clean and secure, the AV integrator can then easily install the speaker baffle and grille.

SF 3CT LP Back Can And Baffle

Magnetically Attached Modern Looking Grille

The SF 26CT features 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. This gives 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.

Round Grille Square Grille

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 for top mount. The side mount orientation allows cable/flex/conduit to enter into the side of the enclosure, without increasing the overall 8" 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

Top mount orientation
Install Cable/​Conduit Access Plate
Mount Speaker in Ceiling
Install Grille

Side mount orientation

Side mount orientation
Install Cable/​Conduit Access Plate
Mount Speaker in Ceiling
Install Grille

Opti-Torque Indicator Ring

The SF 26CT features 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. As a visual indicator, the red ring drops down onto the screw-driver shaft, signaling to the technician that the proper force has been applied.

Opti-Torque Indicator Ring

Modular V-Rail and Foldable C-Rings

To facilitate installation in a T‑bar ceiling, newly redesigned modular V‑rail and foldable C‑rings are included with the SF 26CT. The V‑rails have been designed as a two-part assembly that can be 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.

V-Rail C-Rings

Key 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
  • 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
  • 5-year parts and labor warranty

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