CS 26T Plus

CS 26T Plus

1. Provide a two-way open back ceiling speaker that shall provide an internal transformer.
   1. Two-way open back ceiling speaker with internal transformer for 8 ohm direct and 70/100 volt operation
      1. Driver Requirements
         1. Shall consist of a 6.5" (16.5 cm) long-throw, polypropylene cone woofer
         2. Shall consist of a 3/4" (1.9 cm) ferrofluid-cooled dome tweeter that is mounted on a honeycomb tweeter bridge
      2. Performance Requirements
         1. Shall provide a frequency range of 42 Hz to 20 kHz, -10 dB below average SPL, measured on-axis in half space
         2. Shall provide a frequency response of 58 Hz to 16 kHz, ±3 dB, measured in full space
         3. Shall provide a power handling capacity of 60 watts (rms) continuous pink noise per IEC 60268-5 and 120 watts (rms) continuous program
         4. Shall provide a nominal sensitivity of 86 dB SPL (1 W, 1 m) measured in half space
         5. Shall provide a nominal impedance of 8 ohms per speaker
         6. Shall provide a nominal conical coverage angle of 112°
      3. Electrical Requirements
         1. Shall support 8 ohm direct or 70/100 volt connection from power amplifiers
         2. Shall provide a six-position, through-the-grille power tap selector
            1. Shall provide selectable rotary switch taps for 70 volt operation, including 32, 16, 8, 4, and 2 watts, and 8 ohms direct
            2. Shall provide selectable rotary switch taps for 100 volt operation, including 32, 16, 8, and 4 watts, and 8 ohms direct
         3. Shall provide speaker tap selector and selection guide on the front of the speaker
         4. Shall provide an internal overload protection circuit
         5. Shall support one incoming and one outgoing speaker level signal on one 4-pole, 5 mm captive screw connector
            1. Shall support wiring multiple speakers using parallel or loop-through wiring
            2. Shall support a maximum wire gauge of 12 AWG per connection point for a single wire
            3. Shall support a maximum wire gauge of 16 AWG per connection point for two wires
      4. Speaker Cartridge Enclosure Requirements
         1. Shall have a white, paintable textured finish
         2. Shall provide a thin-edged bezel surrounding the grille
         3. Shall measure 10.3" (26.2 cm) in diameter from bezel edge to edge
         4. Shall measure 3" (7.6 cm) in height from mounting surface to top of woofer magnet
         5. Shall weigh 5.7 lbs (2.6 kg) per speaker cartridge
         6. Shall require 9.2" (23.4 cm) diameter opening in mounting surface for speaker cutout
         7. Shall provide a white, paintable magnetically-attached perforated steel grille with black scrim
      5. General Requirements
         1. Shall be sold in pairs
         2. Shall be compatible with Extron CS 120P plenum rated enclosure
         3. Shall meet regulatory compliances
            1. Shall meet safety compliances under CE, NFPA 70, and NFPA 90A
            2. Shall be UL listed for plenum airspaces and meet UL 2043 for heat and smoke release, only when speaker cartridge is used with CS 120P plenum ceiling tile enclosure
            3. Shall meet UL 1480 for commercial and professional audio systems
            4. Shall comply with appropriate requirements for RoHS and WEEE
         4. Shall provide five year parts and labor warranty
   2. Approved device shall be the Extron CS 26T Plus, part number 60-1505-03; no alternates or equals.