Martin-audio C4.8T 天花喇叭

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

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

TECHNICAL SPECIFICATIONS

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：MA1.4 / MA2.8Q

SENSITIVITY (3)：86dB

MAXIMUM SPL (4)：100dB continuous, 106dB peak

NOMINAL IMPEDANCE：16 ohms

DISPERSION (-6dB)：180º 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

OPTIONS：150W 70/100V line transformer

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)

WEIGH：2.6kg (5.7lbs)