Tannoy CMS 503DC LP Low Profile Full Range Ceiling Loudspeaker (Pair, White) - 5"
SKU: 75556369834

Tannoy CMS 503DC LP Low Profile Full Range Ceiling Loudspeaker (Pair, White) - 5"

Sale price$418.50 Regular price$465.00
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Description

Tannoy CMS 503DC LP Low Profile Full Range Ceiling Loudspeaker (Pair, White) - 5"The CMS 503DC LP is a full bandwidth 240 Watt high sensitivity loudspeaker that utilises our third generation Ceiling Monitor System technology (CMS 3. 0). Thanks to an all new proprietary 5" Dual Concentric point source driver with Omnimagnet technology on a Torus Ogive Waveguide, the UL certified CMS 503DC LP delivers wide and consistent broadband directivity with enhanced intelligibility plus highly accurate and linear response. Optimised for

The CMS 503DC LP is a full bandwidth 240-Watt high sensitivity loudspeaker that utilises our third generation Ceiling Monitor System technology (CMS 3.0). Thanks to an all-new proprietary 5" Dual Concentric point-source driver with Omnimagnet technology on a Torus Ogive Waveguide, the UL certified CMS 503DC LP delivers wide and consistent broadband directivity with enhanced intelligibility – plus highly accurate and linear response.

 

Optimised for Installation
Specifically designed with a 4 way self-aligning clamp system for fast, simple and cost effective installation, CMS 503DC LP features an ultra-shallow back can for applications where cavity space is limited, and a removable locking screw terminal connector with loop-thru functionality. A low-insertion loss 30 W transformer with convenient front panel tap switching, paintable powder coated steel mesh grille with dust protection, two tile support rails and one C-ring are all included. An Arco style grille, which conceals the entire unit for aesthetic purposes, and plaster (mud) ring are available separately.

 

LAB GRUPPEN Ready
The CMS 503DC LP is finished in semi matt white and optimised for use with LAB GRUPPEN LUCIA amplifiers, which accommodate up to 8 CMS Series loudspeakers per channel.

 

Features

  • Full range ceiling loudspeaker for installation applications
  • 60 Watts continuous, 240 Watts peak power
  • Next generation 5" Dual Concentric driver featuring Omnimagnet technology
  • Torus Ogive waveguide for improved high frequency response and directivity
  • Ultra-shallow depth profile for applications where cavity space is restricted
  • UL 1480 certified for general signalling systems
  • UL 2043 certified for air-handling spaces
  • Multiple transformer taps for 70 V and 100 V line systems or 16 Ohm direct input
  • Low insertion loss 30 W line transformer with easily accessible tapping switch
  • Optimised for LAB GRUPPEN low impedance LUCIA amplifiers with up to 8 CMS series loudspeakers per channel
  • Semi matt white finish fits unobtrusively in any environment
  • Powder coated UV resistant perforated steel mesh grille with dust protection
  • Removable magnetic grille for custom painting
  • Optional ARCO designer grilles available for minimal architectural impact
  • Self-aligning 4 way clamp mounting system
  • Mounting C-ring and ceiling tile rails included

 

Specifications

 

Performance

Frequency response (-3 dB) (1)

88 Hz - 22 kHz

Frequency range (-10 dB) (1)

77 Hz - 24 kHz

Frequency range (-10 dB) (1)

System sensitivity (1 W @ 1 m) (2)

89 dB (1 W = 4 V for 16 Ohms)

Nominal coverage angle

90 degrees conical

Power handling (3)
Average

60 W

Programme

120 W

Peak

240 W

Recommended amplifier power

120 W @ 16 Ohms

Nominal impedance (Lo, Z)

16 Ohms

Rated maximum SPL
Average

107 dB

Peak

113 dB

Transformer taps (via front rotary switch)
70 V

30 W (165 O) / 15 W (330 O) /
7.5 W (660 O) / 3.75 W (1320 O) /
OFF & low impedance operation

100 V

30 W (330 O) / 15 W (660 O) /
7.5 W (1320 O) / OFF & low
impedance operation

 

 

Transducers

Dual concentric point source driver

1 x 130 mm (5.0") Dual Concentric driver,
using Omnimagnet technology

Low frequency

35 mm (1.38") voice coil,
treated multi fi ber paper pulp cone

High frequency

20 mm (0.79") PEI dome

 

 

Physical

Enclosure
Backcan

Zinc plated steel

Baffle

Reflex loaded UL 94V-0 rated ABS

Grille

Steel, with weather resistant coating

Safety features

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

Clamping design

Security toggle clamp Min / Max
clamping range 9.5 mm (0.37") /
60 mm (2.36") Recommended
clamp torque: 1.5 Nm

Backcan options
Blind mount (BM)

Pre install (PI)

Cable entry options

Cable clamp & squeeze connector for
conduit up to 22 mm

Conduit knockouts on PI Backcan

Connectors

Removable locking connector
with screw terminals with
“loop through” facility

Compliance

UL-1480, UL-2043, CE

Dimensions
Bezel diameter

274.0 mm (10.79")

Front of ceiling to rear of backcan

98.6 mm (3.88")

BM model: Front of ceiling to <br />rear of backcan

BM model: Front of ceiling <br />to top of safety loop

PI model: Front of ceiling surface <br />to rear of speaker unit

PI model: Front of accessory backcan <br />bezel to top of safety loop

Hole cutout diameter (all models)

253.0 mm (9.96")

Net weight (ea)

4.7 kg (10.36 lbs)

CMS 803DC BM

CMS 803DC PI

PI Backcan

Included accessories

C-Ring, tile-bridge kit, paint mask,
cut-out template, grille

Optional accessories

Plaster (mud) ring, Arco grille

Packed quantity

2

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 75556369834

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michael h.
Bozeman, US
★★★★★ 5
Wonderful product
Size: Large, Color: Sky Blue
Great Shirts this is the second set I have bought and they wear nicely and fit well
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Reviewed in the United States on April 15, 2026
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Toby W.
Dallas, US
★★★★★ 4
Order 1 size larger.
Size: X-Large, Color: Blue White Plaid
Nice shirt. The size is not accurate by any stretch of the imagination. I wear size xl in shirts except for this one. An xl fits like a large. Other than that I like the shirt. I would've given it 5 stars if not for the sizing. I'll give away this one and order an xxl. Just order a size above what you wear and you'll be happy.
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Reviewed in the United States on February 15, 2026
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Never received the order
Dallas, US
★★★★★ 5
Nice fit
Size: X-Large, Color: Grey
Great value for the money. Would buy again.
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Reviewed in the United States on April 30, 2026
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John Robinson
Massapequa, US
★★★★★ 5
Satisfied with color and fit
Size: Small, Color: Light Purple
For the money, this is a good shirt. True, the material is a bit thin and there is a feeling of 'fragility' (loose threads here and there) but the color is nice, the texture is appropriate. The sizing is what I call "New American". I was a medium my whole life but supersizing has made me into a small. I haven't changed, Americans have grown bigger. I am six feet tall and a bit (180+ cm) and weigh 155 pounds (70kg and a bit). The small fits me just fine everywhere but the shoulders are just barely wide enough. If you have slightly wider shoulders but are similar to me otherwise, this may be too tight for you in that one place.
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Reviewed in the United States on May 13, 2025
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Joan A Bernard
Alexandria, US
★★★★★ 3
Fits too tight at waist.
Size: XX-Large, Color: Wine
Quality of product satisfactory, however size labeling incorrect. I ordered a XXL that is too tight at the waist. It should be labeled XXL Trim.
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Reviewed in the United States on May 28, 2026

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