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.
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.
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