Martin Audio C4.8T – 4" Two-Way Flush Mount Ceiling Speaker Pair

Product Overview

The Martin Audio C4.8T is a two-way, flush-mount commercial ceiling speaker designed for distributed audio and background music systems in low-ceiling commercial environments. Priced and sold as pairs, it delivers high speech intelligibility and wide 180° dispersion from a compact 4" (100mm) footprint. The C4.8T supports both high and low impedance operation via an included transformer, making it compatible with 70V/100V distributed audio infrastructures as well as direct 8Ω connections. UL2043 and UL1480 listings confirm suitability for plenum-rated commercial installs.

Product Description

Part of Martin Audio's Ceiling Series for commercial install, the C4.8T pairs a 4" (100mm) UL94V-0 carbon fibre loaded polypropylene cone bass driver with a 0.8" (19mm) dome tweeter mounted side-by-side on the baffle for optimum coverage and consistent off-axis response. The 180° dispersion pattern up to 10kHz makes it one of the widest-coverage ceiling speakers in its class, minimising the number of speakers required per zone and reducing installation cost. A fireproofed rising clamp plug and socket system enables pre-wiring of ceiling cavities before speaker installation, accelerating commissioning on commercial projects. The steel backcan provides structural integrity and fire containment, while tile rails and a C bracket are included for fast grid-ceiling deployment. With a 100dB continuous max SPL at 1 metre, the C4.8T is well-suited to background music reinforcement in environments where tonal accuracy and coverage uniformity are priorities. The included transformer allows tap selection for 70V and 100V distributed systems, giving system designers flexibility across large-footprint commercial installations. UL2043 air handling space listing confirms compliance for above-ceiling plenum runs.

Key Features

• Wide 180° Dispersion — Consistent coverage up to 10kHz minimises speaker count per zone in open-plan commercial spaces.
• UL94V-0 Carbon Fibre Loaded Cone — Fire-rated bass driver material meets plenum compliance requirements for commercial installation.
• High & Low Impedance Operation — Included transformer enables 70V/100V distributed audio or direct 8Ω amplifier connection.
• Fireproofed Pre-Wire Connector — Rising clamp plug and socket system allows ceiling wiring before speaker installation, reducing commissioning time.
• 100dB Max SPL @ 1m — Adequate headroom for background music and paging in retail, hospitality, and office environments.
• Steel Backcan — Provides structural support and fire containment in plenum-rated ceiling applications.
• Tile Rails & C Bracket Included — Supports rapid deployment in standard suspended grid ceiling systems.
• UL2043 & UL1480 Listed — Dual UL listings confirm plenum air handling space and in-wall/ceiling fire safety compliance.

Typical Applications

• Commercial retail BGM distributed audio systems
• Corporate office background music and paging
• House of worship distributed audio fill
• Hospitality venues — hotels, restaurants, cafes
• Government and municipal facilities with 70V/100V infrastructure
• Educational facilities and multi-purpose rooms

Technical Specifications

Frequently Asked Questions

Are the C4.8T speakers sold individually or as pairs?

They are priced and sold as pairs. Each purchase includes two speakers.

Is the C4.8T compatible with 70V and 100V distributed audio systems?

Yes. An internal transformer is included, enabling high-impedance 70V/100V operation as well as direct low-impedance connection.

Is the C4.8T rated for plenum installation above suspended ceilings?

Yes. The C4.8T carries UL2043 listing for use in air handling spaces and UL1480 for in-ceiling fire safety compliance.

What ceiling types does the C4.8T support?

The included tile rails and C bracket support standard suspended grid (drop) ceiling systems. The enclosure is suitable for low-ceiling commercial environments.

What amplifier power is recommended?

The C4.8T is designed for commercial distributed audio amplifiers with 70V or 100V outputs. Consult the Martin Audio specification sheet for tap wattage settings and direct impedance driving.

Can the C4.8T be pre-wired before speaker installation?

Yes. The fireproofed rising clamp plug and socket system allows the ceiling to be wired during rough-in, with speakers installed later without re-wiring.

Where can I view other Martin Audio products for commercial installation?

Visit creationnetworks.net/collections/martin-audio for the full range of Martin Audio commercial install products.