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 503 LP models (all variants) use a 30 W
transformer. In distributed line applications, the
transformer can be tapped at 30 W, 15 W and
7.5 W, with an additional 3.75 W tap for 70 V
line systems.
8 CMS Series Dimensions
Please refer to the full CMS Series Operation
Manual for dimensional drawings.
CMS 503DC LP & CMS 503ICT LP
Hole cut-out: 253 mm Diameter
1
: 274 mm (10.79”)
Height
2
: 98.6 mm (3.88”)
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.