Martin Audio C8.1T

Ceiling Series


Designed to offer performance features not normally associated with install ceiling product, the Ceiling Series brings Martin Audio innovation and sound quality to this market sector. Providing smooth articulate sound with high intelligibility this range of products proves that sonic performance need not be sacrificed to meet the requirements of a life safety system.

Consisting of the C4.8T, C6.8T and C8.1T, the Ceiling Series provides solutions for a wide range of installation scenarios. Each loudspeaker is housed in a steel backcan and have been designed in accordance with IEC60849 / EN60849 and are UL2043 and UL1480 certified. With a 16 ohm impedance, the use of multiple units in low impedance systems is greatly simplified. They are also fitted with a high specification transformer enabling power selection for either 70V or 100V operation via a front mounted rotary switch.

From low ceiling corridors to high atriums, the solution is Martin Audio Ceiling Series – high performance, unobtrusive, reliable and easily installed.

Martin Audio C8.1T

* Full-range 8" system with integral can

* Ceiling mounted, two-way vented enclosure

The C8.1T has been specifically designed for higher ceilings where its high SPL capability and controlled 90° dispersion enable it to provide excellent intelligibility in more reverberant rooms. It features an 8" (200mm) unit with a carbon fibre loaded, polypropylene cone and a 1" (25mm) horn-loaded dome tweeter mounted side-by-side for optimum dispersion and smooth response off-axis. The enclosure is ported to extend the low frequency performance and the 5-point mounting system ensures that installation is fast and secure. Input and link terminals make paralleling units a simple operation and a steel cover plate protects the input connector against fire.

These products comply with UL2043 Fire Tests for Heat & Visible Smoke Release for Discrete Products and their Accessories Installed in Air Handling Spaces.

Listed UL1480 General Signalling Speakers.




Two-way high performance flush mounting ceiling speaker

8" (200mm) UL94V-0 carbon fibre loaded polypropylene

cone bass

Wide dispersion – 90° conical up to 7kHz

High & low impedance operation – transformer included

110dB max SPL @ 1 metre (16 ohm)

125 watt power handling (60W through transformer)

Polyswitch and thermal fuse protected

Steel backcan

UL2043 & UL1480


Fixed installs in ceilings & walls

Bars and restaurants

Technical Specification


TYPE Ceiling mounted, two-way vented enclosure


-10dB @ 50Hz

DRIVERS 8" (200mm) UL94V-0 PP bass driver

1" (25mm) dome tweeter

RATED POWER (2) 125W AES, 500W peak



MAXIMUM SPL (4) 110dB continuous, 116dB peak


DISPERSION (-6dB) 90° conical up to 7kHz

CROSSOVER 3kHz passive

ENCLOSURE Steel backcan

FINISH Bezel & grille – white UV resistant


Backcan – zinc plated

PROTECTIVE GRILLE Perforated steel

CONNECTORS Rising clamp plug and socket

ACCESSORIES (included) 60W 70/100V line transformer

Tile rails

C bracket

Paint mask

Cut-out template


100V – 60W, 30W, 15W

70V – 60W, 30W, 15W, 7.5W

DIMENSIONS (OD) 354mm x (D) 258mm

(OD) 13.9ins x (D) 10.2ins

CUT-OUT DIAMETER 308mm (12.14 ins)

WEIGHT 6.7kg (14.8lbs)


Architectural Specifications


The loudspeaker shall be a two-way, in-ceiling system consisting of an 8” low frequency transducer and a 1” dome high frequency transducer mounted in a ported enclosure. The enclosure shall comprise a pressed steel backcan with a UL94V-0 fire-rated moulded baffle. The transducers shall be protected by a removable, perforated steel grille.

Input connection shall be made via a four-pin rising-clamp plug and socket with loop-through capability to enable pre-wiring with up to 2.5mm2 cable prior to installation. The connector shall be protected from fire by a steel cover with a clamped cable entry. An attachment tag on the backcan shall enable direct attachment to the building structure as a secondary support.

The loudspeaker shall include a steel support ring and tile rails.

Dispersion shall be 90° conical up to 7kHz. The on-axis frequency response shall be 80Hz-18kHz +/- 3dB and the loudspeaker shall produce a maximum SPL of 116dB peak calculated at 1 metre. Power handling shall be 125W AES, 500W peak.

The loudspeaker shall be equipped with a transformer for 70V or 100V line operation, with taps selected by a rotary switch on the front baffle. The switch shall also provide for 16 ohm low impedance operation of the loudspeaker.

Dimensions (OD x D) shall be 354mm x 258mm (13.9ins x 10.2ins). Weight shall be 6.7kg (14.8lbs).

The loudspeaker shall be the Martin Audio C8.1T.