Martin Audio C8.1T – 8" Two-Way Flush Mount Ceiling Speaker Pair

Product Overview

The Martin Audio C8.1T is a two-way, flush-mount commercial ceiling speaker engineered for higher-ceiling commercial environments where elevated SPL capability and controlled 90° dispersion are required to maintain speech intelligibility in reverberant spaces. Priced and sold as pairs, it features an 8" (200mm) bass driver and a 1" (25mm) horn-loaded dome tweeter for consistent off-axis response at extended throw distances. High and low impedance operation via an included transformer makes the C8.1T compatible with 70V/100V distributed audio infrastructure. UL2043 and UL1480 listings confirm plenum-rated commercial installation compliance.

Product Description

The C8.1T is the largest speaker in Martin Audio's Ceiling Series and is specifically engineered for commercial spaces with ceiling heights that exceed the practical range of smaller ceiling speakers. The 8" (200mm) UL94V-0 carbon fibre loaded polypropylene cone bass driver is paired with a 1" (25mm) horn-loaded dome tweeter mounted side-by-side for optimum dispersion geometry and smooth off-axis response. The horn-loaded tweeter extends HF projection to greater distances compared to a direct-radiating dome, supporting intelligibility in taller, more reflective rooms such as atriums, large open-plan offices, and auditoriums. The 90° conical dispersion pattern (up to 7kHz) provides a tighter, more controlled coverage angle suited to higher ceiling heights where wider dispersion would result in excessive inter-speaker overlap and comb filtering. At 110dB max SPL (16Ω) and 125W power handling (60W transformer tap), the C8.1T delivers the headroom required for both background music and voice paging in high-ambient-noise commercial environments. Polyswitch and thermal fuse protection reduce field maintenance requirements on large-scale installs. The steel backcan provides structural integrity and fire containment for plenum-rated above-ceiling deployment.

Key Features

• Horn-Loaded 1" Dome Tweeter — Extended HF projection supports intelligibility at greater throw distances compared to direct-radiating tweeters.
• 8" UL94V-0 Carbon Fibre Loaded Cone — Fire-rated driver meets plenum compliance and delivers higher output than smaller ceiling alternatives.
• 90° Controlled Dispersion — Tighter coverage pattern is optimised for higher ceilings, reducing inter-speaker overlap in reverberant rooms.
• 110dB Max SPL @ 1m — Higher output headroom supports demanding commercial environments with elevated ambient noise.
• 125W Power Handling — 60W transformer tap supports 70V/100V distributed system design for large commercial footprints.
• Polyswitch & Thermal Fuse Protection — Driver protection minimises field failures and associated replacement costs.
• High & Low Impedance Operation — Included transformer enables 70V/100V or direct low-impedance amplifier connection.
• UL2043 & UL1480 Listed — Dual UL listings confirm plenum air handling and in-ceiling fire safety compliance.

Typical Applications

• High-ceiling commercial atriums and lobbies
• House of worship main floor and balcony distributed fill
• Auditoriums and multi-purpose rooms requiring controlled dispersion
• Bars and restaurants with elevated ceiling heights
• Government and broadcast facility BGM and paging systems
• Educational lecture halls and large open-plan offices

Technical Specifications

Frequently Asked Questions

Are the C8.1T speakers sold individually or as pairs?

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

How does the C8.1T differ from the C6.8T?

The C8.1T uses a larger 8" driver and a horn-loaded tweeter, yielding higher SPL (110dB vs 106dB) and a tighter 90° dispersion pattern better suited to higher ceiling heights and more reverberant spaces.

Is the C8.1T UL-rated for plenum installation?

Yes. It carries UL2043 (air handling space) and UL1480 (in-ceiling fire safety) listings for above-ceiling plenum commercial installs.

Is the C8.1T compatible with 70V/100V distributed audio systems?

Yes. An included transformer enables both high-impedance distributed audio and direct low-impedance 16Ω connection.

What ceiling heights is the C8.1T designed for?

The C8.1T is designed for higher ceilings where its 90° dispersion and elevated SPL capability ensure adequate coverage and intelligibility at greater throw distances.

What is the benefit of a horn-loaded tweeter in a ceiling speaker?

Horn-loading provides greater HF projection efficiency and directional control, maintaining intelligibility at the extended throw distances common in high-ceiling commercial environments.

Where can I find other Martin Audio ceiling and install products?

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