Tannoy CMS 3.0 Series Quick Start Manual page 8

14 CMS 3.0 Series
Installation Guide for Optional Pre-Installation Backcan (PI Models Only)
2. Attach the conduit to the installed backcan. This can be done in two ways:
METHOD 1: You can use the clamp at the back of the pre-install backcan. The product will accept a
squeeze connector with a thread size of up to 22 mm: To remove the cable clamp, simply unscrew
the threaded washer (under the wiring cover) which holds the cable clamp in place and replace it
with a conduit squeeze connector. (Fig.5)
METHOD 2: You can use any of the three knock-out points at the sides of the PI backcan
(19 mm, 22 mm or 28 mm diameter). (Fig.6)
3. If conduit is not chosen as the wiring method, run an approved speaker cable to the installed can.
Terminate in the top mounted cable clamp or with an approved cable connector in one of the three
knock-out points at the sides of the PI backcan.
4. Cut hole in the proper location in the ceiling using a pad saw. Place the pre-install backcan over the
hole. (Fig.7)
Conduit
Conduit
Squeeze
Connector
Fig.5
Fig.6
Fig.7
5. Go to the 'Wiring and Setting Up' chapter, then return to point 6 below.
6. Slide the speaker assembly through the hole. Turn the screws (denoted "Screw Fix") clockwise on the front of
the speaker to extend the mounting wings. Tighten the screws until a fi rm grip is achieved. (NOTE: Screws have
a PoziDriv head; use of a PoziDriv driver is recommended). If using a power driver, TANNOY recommends a torque
setting of 1.5 Nm. (Fig.8)
DO NOT OVERTIGHTEN!
7. Attach the nylon safety to the hooks on the front baffl e before attaching the grille by presenting it to the speakers
and allowing the magnets to pull it into position. (Fig.9)
Quick Start Guide 15
Fig.8
Fig.9