Martin Audio Adorn ACP-55T-B – 5.25" Pendant Ceiling Speaker, Black Pair

Product Overview

The Martin Audio Adorn ACP-55T-B is a professional pendant ceiling speaker engineered for distributed audio and background music systems in high-ceiling commercial environments. Sold as a pair, this two-way passive loudspeaker delivers consistent, intelligible coverage across hotel atriums, exhibition halls, and retail environments. Its wide 150° conical dispersion pattern and 70V/100V line compatibility make it a practical choice for AV integrators designing large-scale commercial audio installations.

Product Description

Part of the Martin Audio Adorn commercial loudspeaker series, the ACP-55T-B pendant ceiling speaker combines high output capability with architectural discretion in a black finish that integrates cleanly into commercial interiors. The enclosure features a single-point suspension system with provision for a safety cable, meeting standard commercial rigging requirements for ceiling-mounted audio equipment.

The two-way driver configuration pairs a 5.25" (135mm) low-frequency driver with a 0.75" (19mm) silk-dome tweeter, producing 109dB peak SPL at 1 metre and a frequency response of 98Hz–20kHz ±3dB. The 150° conical coverage pattern reduces the total number of speakers required to achieve even SPL distribution, directly lowering material and labour costs in large-footprint installations.

The built-in multi-tap transformer supports 70V and 100V distributed audio line operation, with tap selection via rotary switch at the top of the pendant enclosure. The enclosure also supports 16-ohm low-impedance operation for direct amplifier connection. Both LF and HF driver sections are individually protected by auto-resetting thermal fuses, ensuring reliable long-term operation. The bezel-less, bayonet-fit perforated steel grille can be removed without tools and accepts field painting to match any décor. This product pairs well with other Martin Audio Adorn loudspeakers available at Creation Networks – Martin Audio.

Key Features

• Two-Way Driver Array — 5.25" LF driver with 0.75" silk-dome HF tweeter for accurate music and speech reproduction.
• 109dB Peak SPL — High output capability suitable for large commercial spaces and ambient noise environments.
• 150° Conical Coverage — Wide dispersion reduces speaker count for even SPL distribution, lowering installation cost.
• 70V/100V Multi-Tap Transformer — Rotary-switch tap selection enables flexible zoning in distributed audio systems.
• 16-Ohm Low-Impedance Mode — Allows parallel connection of four or more speakers per amplifier channel.
• Auto-Resetting Thermal Fuses — Independent LF and HF overload protection ensures continuous system availability.
• Single-Point Pendant Mount — Includes provision for safety cable attachment per commercial rigging standards.
• Bezel-Less Quick-Release Grille — Tool-free bayonet grille removal simplifies installation and maintenance.
• UL94V-0 Rated Enclosure — Fire-rated ABS baffle and enclosure meets commercial building code requirements.
• 5-Year Warranty — Martin Audio manufacturer warranty for commercial installations.

Typical Applications

• House of worship background music and speech reinforcement systems
• Hotel atrium and concourse distributed audio
• Exhibition spaces and convention centre BGM systems
• Commercial meeting space and multi-purpose room audio
• Retail and hospitality background music installations

Technical Specifications

Frequently Asked Questions

Does the ACP-55T-B include safety cable attachment points?

Yes. The pendant enclosure includes provision for attaching a safety cable in addition to the primary single-point mounting system, meeting standard commercial rigging safety requirements.

Can this speaker operate on both 70V and 100V distributed audio systems?

Yes. The built-in multi-tap transformer supports both 70V and 100V line operation. Tap selection is made via a rotary switch at the top of the enclosure. It also supports 16-ohm low-impedance operation for direct amplifier connection.

What amplifier does Martin Audio recommend for low-impedance operation?

Martin Audio recommends the VIA2004 four-channel Class D amplifier for low-impedance operation of the ACP-55T series.

How many speakers are typically needed per zone?

The 150° conical coverage pattern allows wider speaker spacing than narrower designs, reducing the total speaker count required to achieve even SPL distribution. Exact quantities depend on ceiling height, ambient noise levels, and target SPL — consult your acoustic design documentation.

Is the grille field-paintable?

Yes. The perforated steel grille can be painted on-site to match any interior colour scheme without affecting acoustic performance.

What is the warranty period?

The ACP-55T-B carries a 5-year manufacturer warranty from Martin Audio.

Where can I find other Martin Audio Adorn products?

The full Martin Audio product range available from Creation Networks is listed at creationnetworks.net/collections/martin-audio.