
Two-Way 4" On-Wall System - Transformer
Ultra-Compact


The A40T is the perfect choice for background and foreground systems which require superior performance. Its Martin Audio signature sound characteristic also provides a seamless sonic transition within a multi-zoned complex using larger Martin Audio systems such as CDD or BlacklineX.
Comprising a 4” (100mm) LF driver and a 0.75” (19mm) silk-dome HF driver on a 110° x 80° horn, it handles 40W AES, 160W peak and can produce 109dB peak output at 1 metre. It has a smooth frequency response and strong bass reproduction that extends down to 70Hz.
The A40T incorporates a high-quality transformer for 70V/100V line operation, with transformer taps selected by a rotary switch. The recommended amplifier is the VIA5002 in conjunction with a suitable line transformer. For full-bandwidth protection, the low and high-frequency sections are individually protected against overload.
Available in black or white as standard, it can be readily painted to match any décor, and can be wall-mounted vertically or horizontally using the wall bracket supplied. In addition, for general outdoor use the cabinet only requires the additional waterproof connector cover.
The VIA5002 amplifier in combination with a Martin Audio DX0.5 controller will be perfect partners for small scale efficient installations, or with the DX4.0 controller for larger more complex installations, which could then also be managed by Martin Audio’s VU-NET control software platform.
The Martin Audio SX110 subwoofer will extend the bandwidth of ADORN on-wall speakers and is ideal for foreground music applications which require increased impact and low frequency performance.
Data sheets, manuals and resources for the Adorn A40T

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The A40T is the perfect choice for background and foreground systems which require superior performance. Its Martin Audio signature sound characteristic also provides a seamless sonic transition within a multi-zoned complex using larger Martin Audio systems such as CDD or BlacklineX.
Comprising a 4” (100mm) LF driver and a 0.75” (19mm) silk-dome HF driver on a 110° x 80° horn, it handles 40W AES, 160W peak and can produce 109dB peak output at 1 metre. It has a smooth frequency response and strong bass reproduction that extends down to 70Hz.
The A40T incorporates a high-quality transformer for 70V/100V line operation, with transformer taps selected by a rotary switch. The recommended amplifier is the VIA5002 in conjunction with a suitable line transformer. For full-bandwidth protection, the low and high-frequency sections are individually protected against overload.
Available in black or white as standard, it can be readily painted to match any décor, and can be wall-mounted vertically or horizontally using the wall bracket supplied. In addition, for general outdoor use the cabinet only requires the additional waterproof connector cover.
The VIA5002 amplifier in combination with a Martin Audio DX0.5 controller will be perfect partners for small scale efficient installations, or with the DX4.0 controller for larger more complex installations, which could then also be managed by Martin Audio’s VU-NET control software platform.
The Martin Audio SX110 subwoofer will extend the bandwidth of ADORN on-wall speakers and is ideal for foreground music applications which require increased impact and low frequency performance.
| TYPE | Ultra-Compact passive two-way system, front ported bass reflex |
| FREQUENCY RESPONSE | 98Hz-17kHz ± 3dB, -10dB @ 70HZ |
| DRIVERS | LF: 4” /1” high-temp voice coil, coated paper cone, rubber surround ferrite motor, pressed steel chassis HF: 0.75” silk dome, neodymium motor |
| RATED POWER | 40W AES, 160W peak |
| RECOMMENDED AMPLIFIER | VIA5002 [In conjunction with suitable line transformer] |
| SENSITIVITY | 87dB/1W/1m |
| MAXIMUM SPL | 109dB peak |
| NOMINAL IMPEDANCE | 16Ω |
| DISPERSION (-6dB) | 110° H x 80° V |
| CROSSOVER | 3.5kHz passive (LF and HF auto-resetting fuses) |
| TRANSFORMER TAPS | 70V: 20w / 10w / 5w / 2.5w, 100V: 20w / 10w / 5w |
| RECOMMENDED HIGH-PASS FILTER | 60Hz 24dB/oct |
| ENCLOSURE | ABS, UL 94V-0 rated |
| FINISH | Black or white |
| GRILLE | Perforated steel |
| CONNECTORS | Push terminals |
| FITTINGS | Wall bracket included |
| DIMENSIONS EXCL. BRACKET | (W) 124mm x (H) 200mm x (D) 114mm (W) 4.9in x (H) 7.9in x (D) 4.5in |
| WEIGHT | 2.13kg (4.7lbs) |
| ACCESSORIES | Waterproof connector cover |
About Penguin Media Solutions
Penguin Media Solutions is a professional audio, video, and lighting design, installation, and maintenance company based in Brighton, UK. As an authorised Martin Audio dealer, we provide high-performance AV systems for commercial venues, hospitality, and event spaces across Brighton, London, and South-East England.
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