SF 26CT LP

SF 26CT LP

SF 26CT LP

Provide a two-way closed back ceiling speaker that shall provide an internal transformer.

Two-way closed back ceiling speaker with internal transformer for 8 ohm direct and 70/100 volt operation

Driver Requirements

Shall consist of a 6.5" (165 mm) long-throw, polypropylene cone woofer with moisture resistant coating

Shall consist of a 3/4" (19.1 mm) ferrofluid-cooled PEI dome tweeter that is mounted on a hexagonal tweeter bridge

Performance Requirements

Shall provide a frequency range of 85 Hz to 22 kHz, -10 dB below average SPL, measured on-axis in half space per IEC 60268-5

Shall provide a frequency response of 110 Hz to 22 kHz, +/-3 dB, measured in half space

Shall provide a power handling capacity of 65 watts (rms) continuous pink noise and 130 watts (rms) continuous program

Shall provide a nominal sensitivity of 88 dB SPL (1 W, 1 m) measured in half space

Shall provide a nominal impedance of 8 ohms per speaker

Shall provide a nominal conical coverage angle of 111° (1 kHz to 4 kHz)

Electrical Requirements

Shall support 8 ohm direct or 70/100 volt connection from power amplifiers

Shall provide a six-position, through-the-grille power tap selector

Shall provide selectable rotary switch taps for 70 volt operation, including 64 watts, 32 watts, 16 watts, 8 watts, and 8 ohms direct

Shall provide selectable rotary switch taps for 100 volt operation, including null, 64 watts, 32 watts, 16 watts, and 8 ohms direct

Shall provide speaker tap selector and selection guide on the front of the speaker

Shall provide a full range power limiter with the 8 ohm direct input, protecting the tweeter, woofer, and crossover

Shall support one incoming and one outgoing speaker level signal on one 4-pole, 5 mm captive screw connector

Shall support wiring multiple speakers using parallel or loop-through wiring

Shall support a maximum wire gauge of 12 AWG per connection point for a single wire

Shall support a maximum wire gauge of 16 AWG per connection point for two wires

Speaker Enclosure Requirements

Shall provide a thin-edged rounded bezel surrounding the grille

Shall measure 11.09" (281.7 mm) in diameter from bezel edge to edge

Shall provide a white, paintable magnetically-attached perforated steel grille with black scrim

Shall measure 10.64" (270.3 mm) in diameter

Shall measure 4.2” (106.7 mm) in height from front of ceiling tile to back of rear enclosure

Shall weigh 8.6 lbs (3.9 kg) per speaker

Shall require 9.3" (236.2 mm) diameter opening in mounting surface for speaker cutout

General Requirements

Shall be sold in pairs

Shall have a separable back can and baffle to support single trade and division of labor applications

Shall include modular V-rail and folding C-ring kits

Shall have a cable/conduit access plate for top connection

Shall have a 5-year parts and labor warranty

Shall be compatible with Extron SGK SF26C Square Grille Kit

Shall meet regulatory compliances

Shall meet safety compliances under CE, UL 2043, UL 1480, NFPA 90A, and NFPA 70

Shall be UL listed for plenum airspaces and meet UL 2043 for heat and smoke release

Shall meet UL 1480 for commercial and professional audio systems

Shall comply with appropriate requirements for RoHS and WEEE

Shall provide five year parts and labor warranty

Approved device shall be the Extron SF 26CT LP, part number 60-1881-03; no alternates or equals.