Tannoy CMS 1201DC In-Ceiling Speaker


  • Brand: Tannoy
  • Product Code: CMS 1201DC

Free Lifetime Technical Assistance
  • $429.00

Request Trade-In Price

The CMS 1201DC is the latest addition to Tannoy's large format in-ceiling loudspeaker range, designed and built to complement the existing class-leading CMS range. From the pioneers of point source and large format ceiling speakers the CMS 1201DC is engineered from the ground up with superior full-range performance in mind to handle demanding distributed sound applications such as ballrooms, shopping malls, sports halls, airports and other high ceiling installations.

Built around a brand new evolution of the high power handling 12” (300mm) Dual Concentric™ point source driver, the CMS 1201DC delivers best-in-class performance for the most even beamwidth and pattern control over the widest range of frequencies of any large format ceiling speaker. Coupled with exceptional clarity, ultra low distortion, and high SPLs, CMS 1201DC raises the bar to give the absolute cutting edge performance in ceiling mounted loudspeaker technology.

Achieving new standards of full bandwidth coverage control means that the CMS 1201 can be specified in distributed designs with absolute confidence and located as efficiently as possible, minimising the number of devices typically required to cover a given area, reducing install time and cost. All Tannoy ceiling loudspeakers are simple to design into a wide variety of applications using our Ease Address™ design software. 

Each device comprises of 3 discrete components: the loudspeaker assembly (mounted on ported steel baffle), a separate 79 litre (2.8 cubic feet) steel back-can with multiple mounting points and a white powder-coated steel grille and moulded bevel cover.

The custom engineered powder coated steel back-can has been designed to cater for all conceivable installation possibilities making the CMS 1201DC extremely versatile. Internally dampened with 11m OSB2 board, the addition of the back-can provides exceptional low frequency performance on a par with conventional wooden enclosure loudspeakers – but from an in-ceiling format. Steel mounting lugs allow for fitting to a Unistrut roof rail system in a variety of configurations both directly or via secondary prefixed cross struts. The device can also be hung via 4 top-mounted eye bolts, or as a further alternative, the design also caters for a single point central hang via M10 or 3/8 UNC screwed rod – made easy thanks to the slotted mounting saddle on the top of the back-can.

Mounting of the loudspeaker assembly to the pre-installed back-can is a one man job thanks to the common sense design approach. One edge of the baffle clips onto the steel box to hold it in place while the installer secures the assembly in place. Connection is simple via terminal barrier strips inside the can, easily accessible via 20mm and 29mm conduit knockouts on all 5 sides of the can. Saving time and man-power during installation has been a driving factor behind the design of the CMS 1201 system.

The CMS 1201 is available in both a standard low-impedance variant (CMS 1201DC) and a low insertion loss 60 W line transformer-equipped version (CMS 1201DCt) for use on 70 V or 100 V distributed lines. 


  • 12” (305mm) point source Dual Concentric™ driver with Ferrofluid cooled Neodymium HF
  • High power & high sensitivity with extended LF response and very low distortion
  • Highly controlled full-bandwidth 90 degree dispersion
  • High power handling (400W rec. power), high SPL (120dB sustained average)
  • Highly versatile back-can installation options
  • 79 litre Back-can lined with OSB2 board for optimum acoustic performance
  • Designed to meet UL-1480 and UL-2043 Listing specification
  • One-man install thanks to quick-fix baffle fitment
  • Available with optional low insertion loss 60 W line transformer
  • 5-year warranty


  • Ballrooms and convention Centres
  • Bars & Restaurants
  • Casinos
  • Conference rooms
  • Corporate AV
  • Fitness Centres & Leisure Facilities
  • Hotels
  • Museums & Galleries
  • Retail Spaces & Malls
  • Transport Hubs

Frequency Response (-3dB) 1

60 Hz - 20 kHz

Frequency Range (-10dB) 1

45 Hz - 30 kHz

System Sensitivity (1W @1m) 2

99dB (1W = 2.83V for 8 Ohms)

Nominal Coverage Angle

90 Degrees Conical

Coverage Angle (1kHz to 6kHz)

90 Degrees Conical

Directivity Factor (Q)


Directivity Index (DI)


Rated Maximum SPLAverage

122 dB


128 dB

With THP60 - Average

117 dB

Power HandlingAverage






Recommended Amplifier Power

400W @ 8 Ohms

Nominal Impedance (Low Z operation)

8 Ohms

Transformer Taps (via front rotaryswitch)



60W / 30W / 15W / 7.5W / OFF & Low Z operation


60W / 30W / 15W / OFF Low Z operation



10% Full Power (12.65V)

2nd Harmonic 3rd Harmonic


1.6 0.28


2.45 0.73


4.5 0.32

1% Full Power (4.0V)

2nd Harmonic 3rd Harmonic


0.48 0.08


1.06 0.59


1.57                    0.04


1.6kHz - 2nd order LF, 2nd order HF



Dual Concentric™ point source driver


Low Frequency section

1x 300mm (12.00") Dual Concentric™ constant directivity driver with treated cone

High Frequency section

34mm (1.34") aluminium dome with neodymium magnet system



Enclosure materials



1.6 mm black powder coated steel, damped with 11 mm OSB board


1.2 mm black powder coated steel


1.0 mm white powder coated perforated steel

Safety Features

Safety ring located at rear of enclosure for load bearing safety bond

Cable Entry Options

20 mm and 28 mm on knockouts (see below)

Conduit Knockouts

4 sides top


Terminal barrier strip inside the can, with loop thru capability

Safety Agency Ratings (pending)



331 mm H x 725 mm W x 516 mm D (overall dimensions)

Net Weight (ea)









1. Average over stated Bandwidth. Measured in an IEC baffle in an Anechoic Chamber


2. Unweighted Pink noise input, measured at 1m on axis


3. Long term power handling capacity as defined in EIA - 426B test