C4.8T

Ceiling mounted, two-way vented enclosure

The C4.8T is an extremely compact, two-way flush mount loudspeaker designed to deliver high performance and high intelligibility in a wide range of applications. The unit consists of a 4" (100mm) bass driver with a UL rated, carbon fibre loaded polypropylene cone and a 0.8" (19mm) dome tweeter mounted side by side on the baffle. This configuration easily outperforms coaxial stalk-mounted tweeter or single driver arrangements in terms of wide dispersion and smooth off-axis frequency response. The exceptionally wide dispersion of the C4.8T makes it particularly suitable for installation in low ceilings where significantly fewer units will be required to cover a particular area.

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.

SUITABLE FOR USE IN AIR HANDLING SPACES

Accessories
Accessories

Features


  • Two-way high performance flush mounting ceiling speaker
  • 4" (100mm) UL94V-0 carbon fibre loaded polypropylene cone bass driver
  • Very wide dispersion – 180° up to 10kHz
  • High & low impedance operation – transformer included
  • Fireproofed rising clamp plug and socket for easy pre-wiring
  • 100dB continuous max SPL @ 1 metre
  • Steel backcan
  • Tile rails and C bracket included
  • UL2043 & UL1480

Applications


  • Fixed installations in ceiling and walls
  • Low ceiling environments

 

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Technical Specification – View
TYPE Ceiling mounted, two-way vented enclosure
FREQUENCY RESPONSE (1) 100Hz-20kHz ± 3dB
-10dB @ 80Hz
DRIVERS 4" (100mm) UL94V-0 PP bass driver
0.8" (19mm) dome tweeter
RATED POWER (2) 40W AES, 160W peak
RECOMMENDED AMPLIFIER MA2.8Q
SENSITIVITY (3) 86dB
MAXIMUM SPL (4) 100dB continuous, 106dB peak
NOMINAL IMPEDANCE 16 ohms
DISPERSION (-6dB) 180° conical up to 10kHz
CROSSOVER 5kHz passive
ENCLOSURE Steel backcan
FINISH Bezel & grille – white UV resistant
Overpaintable
Backcan – zinc plated
PROTECTIVE GRILLE Perforated steel
CONNECTORS Rising clamp plug and socket
ACCESSORIES (included) 25W 70/100V line transformer
Tile rails
C bracket
Paint mask
Cut-out template
VOLTAGE TAPS

100V – 25W, 12.5W, 6W
70V – 25W, 12.5W, 6W, 3W

DIMENSIONS (OD) 205mm x (D) 131mm
(OD) 8.1ins x (D) 5.1ins
CUT-OUT DIAMETER 178mm (7.01 ins)
WEIGHT 2.6kg (5.7lbs)
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Technical Drawing – View
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Architectural Specifications – View

C4.8T

Architectural Specifications

The loudspeaker shall be a wide-dispersion, two-way, in-ceiling system consisting of a 4” low frequency transducer and a 0.8” 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 180° conical up to 10kHz. The on-axis frequency response shall be 100Hz-20kHz +/- 3dB and the loudspeaker shall produce a maximum SPL of 106dB peak calculated at 1 metre. Power handling shall be 40W AES, 160W 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 205mm x 131mm (8.1ins x 5.1ins). Weight shall be 2.6kg (5.7lbs).

The loudspeaker shall be the Martin Audio C4.8T.


Commercial Installation

Further Information

MLA PORTAL

Recommended Amp

MA 2.8Q