Tannoy CMS603ICT LS Quick Start Manual Download Page 4

7  Wiring and Setting Up

1. Open the wiring cover (if applicable) and locate  

the Euro-type connector plug and socket at the  

back of the speaker. (Fig.1)

2. For connection to an amplifier, use Pins 1 and 2

(Fig.2)

3. Close the wiring cover and tighten both screws  

on the cable clamp (if applicable). 

4. Use the rotary switch on the front of the unit  

to select low impedance (LoZ) mode or high   

impedance (70 V or 100 V) for distributed 

applications. 

The speaker is supplied in low impedance

mode. Never connect the speaker to a 

70 / 100 volt amplifier while it is set for 

low impedance.

CMS 603ICT LS products use a 60 W 

transformer. In distributed line applications, the 

transformer can be tapped at 60 W, 30 W and 

15 W with an additional 7.5 W tap for 70 V 

line systems.

8  Dimensions

Please refer to the full CMS Series Operation 

Manual for dimensional drawings.

CMS 603ICT LS

Hole cut-out: 253 mm   

Diameter

1

: 274 mm (10.79”)  

Height

2

: 273.8 mm (10.78”)

1

 Maximum, including bezel ring

2

 Maximum to top of connector, from lower 

  ceiling surface 

Fig.1

• Pin 1 is positive

• Pin 2 is negative

For connection to 

additional speakers 

in a distributed line,

Pins 3 and 4 are in 

parallel where:

• Pin 3 is negative

• Pin 4 is positive

Fig.2

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Tannoy operates a policy of continuous research and development. The introduction of new materials or 

manufacturing methods will always equal or exceed the published specifications. All specifications are 

subject to change without notice. Copyright (c) 2015 Music Group Innovation SC Ltd. All rights reserved.

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