The custom engineered powder coated steel back-can has been designed to cater for all conceivable installation possibilities.
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.
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, 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-person job thanks to the common sense design approach, where 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 20 mm and 29 mm conduit knockouts on all 5 sides of the can.
The CMS 1201 is available in both a standard low-impedance variant (CMS1201DC) and a low insertion loss 60-watt line transformer-equipped version (CMS 1201DCt) for use on 70-volt or 100-volt distributed lines.
The following tappings are configurable on the transformer before screwing driver assembly into the back can:
70V systems – 60W / 30W / 15W / 7.5W / OFF
100V systems – 60W / 30W / 15W / OFF
If later adjustment to the tapping is required the baffle can be hung from the can via a hinged edge, leaving both hands free to make the required adjustment.
As with all of Tannoy’s CMS in-ceiling loudspeakers, the CMS 1201DC is backed by a 5-year warranty.
