CS 26T Plus

Two-Way Open Back Ceiling Speakers with 70/100 V Transformer
Key Features
  • Open back, infinite baffle design
  • 6.5" (165 mm) long-throw woofer
  • 3/4" (19 mm) ferrofluid-cooled dome tweeter mounted on an innovative honeycomb tweeter bridge
  • 8 ohm direct or 70/100 volt operation on a six-position, behind-the-grille selector
  • Frequency range: 42 Hz to 20 kHz, -10 dB, half space
  • 60 watts continuous pink noise
    120 watts continuous program
The Extron CS 26T Plus
Model Version Description Part #
CS 26T Plus Two-Way, Open Back Speaker, Transformer, Pair 60-1505-03

The Extron CS 26T Plus is a two‑way ceiling speaker featuring an open back, coaxial design with transformer for use in non‑plenum airspace environments. It delivers accurate voice and high performance, full-range audio reproduction with a 6.5" (165 mm) long-throw woofer and 3/4" (19 mm) ferrofluid-cooled dome tweeter. An innovative tweeter bridge provides smooth off-axis response and offers wide 112° conical coverage for flexibility in speaker spacing. With a frequency range of 42 Hz to 20 kHz, the CS 26T Plus is optimized for a wide range of paging and audio presentation applications for music, program, and voice. Music reproduction is also enhanced with the exceptional low-frequency response of the woofer. It features a power rating of 60 watts continuous pink noise and 120 watts continuous program capacity.

The 112° conical dispersion of the CS 26T Plus allows for greater flexibility in speaker spacing and placement. The CS 26T Plus is designed with wide, uniform coverage to eliminate hot spots. It offers both direct 8 ohm or 70/100 volt operation with a behind-the-grille, six-position selector switch. For room balancing with 70/100 volt systems, the selector switch allows for 32, 16, 8, 4, and 2 watt settings in 70 volt operation, and 32, 16, 8, and 4 watt settings for 100 volt operation.

The CS 26T Plus features a thin-edged bezel for a refined appearance on the ceiling. The grille attaches magnetically to the baffle and quickly snaps into place. The white grille and bezel can be painted to match the architectural elements of the environment. If installing the CS 26T Plus into a ceiling tile, the optional Ceiling Mount Kit is recommended to prevent deforming or breaking the ceiling tile.

CS 26T Plus speakers are sold in pairs and include a 5 year parts and labor warranty.


  CS 120P Plenum Rated Ceiling Tile Enclosure for CS 3T and CS 26T Plus Speakers
  Ceiling Mount Kit C-Ring and V-Rail Kits
  SPK 14 14 AWG Speaker Cable
  SPK 16 16 AWG Speaker Cable
  SPK 18 18 AWG Speaker Cable
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CS 26T Plus Speakers
Audio/acoustic and electrical
   Speaker type 2-way ceiling speaker
   Frequency range 42 Hz to 20 kHz, -10 dB, half space (per IEC 60268-5)
   Frequency response 58 Hz to 16 kHz, +/- 3 dB, half space
   Power capacity 60 W (rms) continuous pink noise (per IEC 60268-5)
120 W (rms) continuous program
   Nominal sensitivity 86 dB SPL, 1 W @ 1 m, half space
   Nominal impedance 8 ohms per speaker
   Crossover frequency 2.5 kHz
   Nominal coverage angle 112° conical coverage
   Rotary switch taps
      70 V input 32 W, 16 W, 8 W, 4 W, 2 W, 8 ohms direct
      100 V input 32 W, 16 W, 8 W, 4 W, 8 ohms direct
   Woofer (1) 6.5" (165 mm) polypropylene cone with moisture resistant coating
   Tweeter (1) 0.75" (19.1 mm) PEI dome
   Overload protection Full range power limiter, protecting the tweeter, woofer, and crossover
   Input/output connectors (1) 5 mm captive screw connector, 4 pole with loop out
   Package 2 speakers (1 pair)
   Temperature/humidity Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
   Mounting Ceiling mountable with optional ceiling mounting kit or CS 120P enclosure
   Enclosure type
      Enclosure materials High-impact, fire-resistant (UL94V-0) plastic
      Enclosure design Plastic, open back, infinite baffle
   Grille material Steel
   Enclosure outer dimensions 3.97" H x 10.3" diameter
(10.1 cm H x 26.2 cm diameter)
3.63" (9.2 cm) from front (bottom) of ceiling tile to top of connected captive screw connector
   Cutout dimensions 9.2" diameter (23.4 cm diameter)
   Product weight Single: 5.7 lbs (2.6 kg)
   Shipping weight Pair: 15 lbs (7 kg)
   Regulatory compliance 
      Safety CE, UL 2043, UL 1480, NFPA 90A, NFPA 70
UL listed for use in plenum air spaces:
UL 2043 listed for heat and smoke release (only when used with CS 120P).
UL 1480 listed for commercial and professional audio systems.
      EMI/EMC CE
   Product warranty 5 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.
Shipping Dimensions and Weights
    Part # Height Width Depth Weight
    60-1505-03 12.75" (32.4 cm) 10.75" (27.3 cm) 13.0" (33.0 cm) 14.7 lbs (6.67 kg)


Panel Drawing

Panel Drawing
© 2020 Extron. Specifications are subject to change without notice.