Martin Audio Adorn A40TW – 4" On-Wall Speaker with 70/100V Transformer, White Pair

Product Overview

The Martin Audio Adorn A40TW is a two-way passive on-wall loudspeaker with a built-in 70V/100V line transformer, designed for distributed audio and background music systems in commercial installations. Sold as a pair in white finish, it delivers 109dB peak SPL from a compact enclosure and integrates directly into constant-voltage distributed audio systems without the need for an external line transformer. The A40TW is well suited to retail, hospitality, corporate, and educational environments requiring 70V/100V system compatibility in a discreet, light-finished wall-mounted form factor.

Product Description

The Adorn A40TW is the white-finish variant of the A40T on-wall loudspeaker with integrated transformer. It shares all acoustic and electrical characteristics with the A40TB, differing only in finish colour. The white enclosure coordinates with the Adorn ceiling speaker range (ACS-40TS-W, ACS-55T-W) for consistent system aesthetics across mixed ceiling and wall deployments in light-coloured commercial interiors.

The integrated 70V/100V multi-tap transformer allows direct connection to constant-voltage distributed audio lines, simplifying wiring design and reducing installation cost versus external transformer configurations. Push-terminal connectors streamline field termination. Driver complement includes a 4" (100mm) LF driver and a 0.75" (19mm) silk-dome HF driver on a 110° x 80° horn, producing 109dB peak SPL and 87dB sensitivity. A 3.5kHz passive crossover with auto-resetting fuses on both driver sections provides full-bandwidth protection. Find the complete Martin Audio range at Creation Networks – Martin Audio.

Key Features

• Integrated 70V/100V Line Transformer — Direct constant-voltage system connection without external transformer.
• Multi-Tap Power Selection — 70V taps: 20W/10W/5W/2.5W; 100V taps: 20W/10W/5W for zone level control.
• 109dB Peak SPL — High output for commercial ambient-noise environments.
• Two-Way Horn-Loaded Design — 4" LF driver with 0.75" silk-dome HF on a 110° x 80° horn.
• 87dB/1W/1m Sensitivity — Efficient performance from moderate amplifier power.
• 3.5kHz Passive Crossover with Auto-Resetting Fuses — Independent LF and HF overload protection.
• Push-Terminal Connectors — Simplified field wiring for distributed audio installations.
• Vertical or Horizontal Mounting — Included wall bracket supports both orientations.
• UL94V-0 Rated ABS Enclosure — Commercial fire compliance.
• 5-Year Warranty — Martin Audio manufacturer warranty.

Typical Applications

• Retail outlet 70V/100V background music distributed audio
• Hotel corridor and public area constant-voltage audio systems
• Corporate office multi-zone distributed audio
• House of worship background music systems
• Government space and educational facility distributed audio
• Restaurant and hospitality background music installations

Technical Specifications

Frequently Asked Questions

What is the difference between the A40TW and A40TB?

The A40TW and A40TB are acoustically and electrically identical. The A40TW has a white finish; the A40TB is black. Both have integrated 70V/100V line transformers.

What transformer taps are available on the A40TW?

70V taps at 20W, 10W, 5W, and 2.5W; 100V taps at 20W, 10W, and 5W. Tap selection allows per-speaker level adjustment across distributed audio zones.

What is the difference between the A40TW and the A40W?

The A40TW has a built-in 70V/100V transformer for constant-voltage line connection. The A40W operates at 16 ohms for low-impedance amplifier connection and does not include a transformer.

Can the A40TW be used in a system alongside Martin Audio CDD loudspeakers?

Yes. The A40TW shares Martin Audio’s signature sound characteristic, enabling consistent audio quality across multi-zone installations that also deploy CDD or BlacklineX series loudspeakers.

Does the A40TW include a wall bracket?

Yes. A wall bracket enabling both vertical and horizontal mounting is included with each pair.

What warranty does the A40TW carry?

Martin Audio provides a 5-year manufacturer warranty on the A40TW.