CS 1226T Plus

Two-Way 70/100 V SpeedMount Ceiling Speaker System
Key Features
  • Patented two-piece speaker system for suspended ceilings in division-of-labor installations
  • Enclosure and speaker cartridge can be purchased as individual components and installed separately by low-voltage and AV system contractors
  • Provides significant time and cost savings in ceiling speaker installation
  • 6.5" (165 mm) long-throw woofer with a tuned bass reflex port
  • 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
The Extron CS 1226T Plus
Model Version Description Part #
CS 1226T Plus Two-Way SpeedMount System, Pair 42-244-03
CS 26T Plus Two-Way, Open Back Speaker, Transformer, Pair 60-1505-03
CS 120P SpeedMount Enclosure, Pair 70-976-01

The Extron CS 1226T Plus SpeedMount® Ceiling Speaker System is a patented low profile, plenum rated two-piece speaker system. It is comprised of a CS 120P plenum rated enclosure and a CS 26T Plus two‑way speaker cartridge. The CS 120P enclosure installs quickly into 2' x 2' (61 cm x 61 cm) or metric 600 mm x 600 mm suspended ceiling grids. The CS 26T Plus speaker cartridge features a 6.5" (165 mm) woofer and a 3/4" (19 mm) ferrofluid-cooled dome tweeter in a coaxial design, with an innovative tweeter bridge that delivers smooth off-axis response. It offers wide 112° conical coverage for flexibility in speaker spacing, and can be used in 70/100 volt or 8 ohm operation. The CS 1226T Plus is available as a complete assembly, or the CS 120P and CS 26T Plus can be purchased separately to accommodate division-of-labor installations.

The innovative, patented two-piece design of the SpeedMount Ceiling Speaker System greatly simplifies installation of ceiling speakers, especially when a large quantity is needed for a facility. Instead of waiting until the final phase of installation, when ceiling access is limited, a low-voltage contractor can begin during rough-in by placing a CS 120P enclosure into the ceiling grid, and running speaker cable through it. This leaves the AV installer with a simple procedure of connecting the CS 26T Plus speaker cartridge to the wiring and securing it into the enclosure.

1' x 2' Plenum Rated Enclosure

The CS 120P plenum rated enclosure features a shallow 5" (12.7 cm) profile, which simplifies installation into congested ceiling spaces around piping and ducts. The integrated tile bridge of the enclosure rests with the ceiling tile on the grid, evenly distributing the weight of the enclosure and the CS 26T Plus. This avoids the need to assemble V‑rails and C‑rings, greatly reducing the number of installation steps and the chance of losing installation hardware. Additionally, the CS 120P is reinforced to minimize acoustical vibrations.

Two-Way Speaker Cartridge

The CS 26T Plus speaker cartridge installs quickly and easily into the CS 120P enclosure. 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 enhanced with the exceptional low-frequency response of the woofer. An innovative tweeter bridge provides smooth off-axis response and offers wide 112° conical coverage for flexibility in speaker spacing and placement. The CS 26T Plus features a power rating of 60 watts continuous pink noise and 120 watts continuous program capacity, as well as a tuned bass reflex port optimized for the CS 120P enclosure.

The CS 26T Plus speaker cartridge 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-edge 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.


  SPK 14 14 AWG Speaker Cable
  SPK 16 16 AWG Speaker Cable
  SPK 18 18 AWG Speaker Cable
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SpeedMount® Ceiling Speaker System
CS 1226T Plus system — CS 120P and CS 26T Plus
      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 included hardware
      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 CS 26T Plus is 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.
CS 120P Plenum Enclosure
      Package 2 plenum rear enclosures (1 pair)
      Enclosure type
         Enclosure materials Aluminized fiberglass, plastic, MDF, steel
         Enclosure design 1' x 2' (30.5 cm x 61 cm) tapered cube
      Insulation Glass polyfill
      Enclosure outer dimensions 23.7" L x 11.7" W x 4.9" D
(60.1 cm L x 29.7 cm W x 12.4 cm D)
      Cutout dimensions 9.2" (23.4 cm) diameter
      Product weight Single: 6.0 lbs (2.7 kg)
      Shipping weight Pair: 16 lbs (7 kg)
CS 26T Plus Speaker Cartridge
   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)
      Mounting Ceiling mountable with CS 120P enclosure or optional ceiling mounting kit
      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)
Shipping Dimensions and Weights
    Part # Height Width Depth Weight
    42-244-03 31.0 lbs (14.06 kg)
    70-976-01 26.0" (66.0 cm) 10.63" (27.0 cm) 14.75" (37.5 cm) 16.1 lbs (7.3 kg)


Panel Drawing

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