Martin Audio Adorn ACS-55T-W – 5.25" Ceiling Speaker, White Pair

Product Overview

The Martin Audio Adorn ACS-55T-W is a two-way passive ceiling speaker designed for background music and distributed audio systems in commercial installations. Sold as a pair in white finish, it is part of the Martin Audio Adorn commercial loudspeaker series and delivers 113dB peak SPL from a compact, recessed form factor. Its 150° conical coverage pattern and 70V/100V line transformer compatibility make it well suited to retail, hospitality, and corporate AV installations requiring cost-effective, high-performance ceiling audio.

Product Description

The ACS-55T-W is a recessed ceiling loudspeaker built for commercial background and foreground audio applications where premium sound quality and architectural integration are both priorities. The white (RAL9016) bezel-less grille coordinates with Adorn on-wall loudspeakers, providing a unified system aesthetic across mixed ceiling and wall deployments.

Driver complement includes a 5.25" (135mm) LF driver and a 0.75" (19mm) silk-dome tweeter, producing a frequency response down to 62Hz and 113dB peak SPL at 1 metre — notably higher output than many competing 5.25" ceiling formats. The ported bass reflex backcan with generous internal volume maximises low-frequency output without external supplementation in most background music contexts.

A built-in multi-tap transformer supports 70V and 100V line operation, with tap selection via a rotary switch accessible behind the grille. The 16-ohm low-impedance mode allows parallel connection of multiple speakers per amplifier channel. Both driver sections are independently protected by auto-resetting thermal fuses. Tile rails and a C-ring for drop-ceiling installation are included in the box. Explore the full Adorn range at Creation Networks – Martin Audio.

Key Features

• 113dB Peak SPL — High output ceiling speaker suitable for ambient-noise commercial environments.
• Two-Way Driver Array — 5.25" LF driver with 0.75" silk-dome tweeter for full-range music and speech intelligibility.
• 62Hz Low-Frequency Extension — Ported bass reflex design delivers strong bass without supplemental subwoofer in BGM applications.
• 150° Conical Coverage — Reduces speaker density required for even SPL distribution in open-plan spaces.
• 70V/100V Multi-Tap Transformer — Grille-accessible rotary switch for flexible distributed audio zoning.
• 16-Ohm Low-Impedance Mode — Enables parallel multi-speaker wiring from a single amplifier channel.
• Auto-Resetting Thermal Fuses — Independent LF and HF overload protection for long-term reliability.
• UL94V-0 Rated Baffle with Zinc-Plated Steel Backcan — Meets commercial fire and build quality standards.
• Bezel-Less Grille with Bayonet Fit — Tool-free removal for clean aesthetic and easy access to transformer tap switch.
• Tile Rails and C-Ring Included — Drop-ceiling installation hardware supplied in the box.
• 5-Year Warranty — Martin Audio manufacturer warranty.

Typical Applications

• Retail outlet background music systems
• Hotel lobby and concourse distributed audio
• House of worship BGM and speech reinforcement
• Boardroom and commercial meeting space audio
• Restaurant, bar, and café background music installations
• Reception area and corridor distributed audio

Technical Specifications

Frequently Asked Questions

What installation hardware is included with the ACS-55T-W?

Each pair includes tile rails and a C-ring for drop-ceiling installation. The bayonet-fit grille is also included.

How does the ACS-55T-W differ from the ACS-55TS-W?

The ACS-55TS-W uses a shallow backcan for installations with limited ceiling cavity depth, while the ACS-55T-W uses a standard-depth backcan that maximises internal volume for greater low-frequency output.

Does this speaker support 70V and 100V line systems?

Yes. The built-in multi-tap transformer supports both 70V and 100V distributed audio lines. The tap selection rotary switch is accessible behind the grille without removing the backcan.

Is the ACS-55T-W suitable for foreground music applications?

Yes. The 113dB peak SPL output and extended bass response to 62Hz make this model viable for foreground music in retail and hospitality environments, not just background music systems.

Can the grille be painted to match the ceiling?

Yes. The perforated steel grille can be field-painted without affecting acoustic performance.

What is the warranty on the ACS-55T-W?

Martin Audio provides a 5-year manufacturer warranty on this product.