Martin Audio Adorn ACP-55T

Martin Audio Adorn ACP-55T


  • High performance two-way pendant speaker
  • 5.25” (135mm) LF driver and 0.75” (19mm) HF dome tweeter
  • Wide 150° conical coverage pattern reduces speaker count required for even coverage
  • 70V/100V multi-tap line transformer or 16-ohm low-impedance operation
  • Low and high-frequency overload protection
  • Quick release, bezel-less grille
  • UL94V-0 rated baffle and enclosure
  • Description
  • Additional information


As part of the ADORN commercial loudspeaker series, the ACP-55T is a compact, two-way pendant loudspeaker designed for background and foreground applications hat require premium performance and cost competitiveness in spaces with open ceiling architecture.


Additional information


Black or White


TYPE Passive two-way pendant speaker, ported bass reflex

FREQUENCY RESPONSE (1) 98Hz-20kHz ± 3dB -10dB @ 56Hz

LF: 5.25” /1” high-temp voice coil, coated paper cone, rubber surround, ferrite motor, pressed steel chassis
HF: 0.75” silk dome, neodymium motor

RATED POWER (2) 50W AES, 200W peak

RECOMMENDED AMPLIFIER VIA2004 (for low-impedance operation)

SENSITIVITY(4) 86dB / 1W(4V) / 1m (full space)

MAXIMUM SPL (9) 109dB peak


DISPERSION (-6DB) 150° conical up to 7kHz

CROSSOVER 3kHz passive (LF and HF auto-resetting fuses

70V: 30w / 15w / 7.5w / 3.75w
100V: 30w / 15w / 7.5w


ENCLOSURE UL 94V-0 rated ABS baffle and enclosure

GRILLE Perforated steel, powder-coated, bayonet fitting

CONNECTORS Ceramic connector (in and link)

(OD) 246mm x (D) 238mm
(OD) 9.7in x (D) 9.35in

WEIGHT 3.46kg (7.62lbs)


The loudspeaker shall be a wide-dispersion, two-way, in-ceiling system consisting of a 5.25” low frequency transducer and a 0.75” dome high frequency transducer mounted in a ported enclosure. The enclosure shall comprise a pressed steel backcan with a UL94V-0 fire-rated moulded baffle. The transducers shall be protected by a quick-release perforated steel grille.
Input and loop through connections shall be made via a ceramic connector located behind a fire-retardant steel cover.
The loudspeaker shall include a steel support ring and tile rails. A safety ring on the backcan shall enable direct attachment to the building structure as a secondary support.
Dispersion shall be 150° conical up to 7kHz. The on-axis frequency response shall be 98Hz-20kHz +/- 3dB and the loudspeaker shall produce a maximum SPL of 113dB peak calculated at 1 metre. Power handling shall be 50W AES, 200W peak.
The loudspeaker shall be equipped with a transformer for 70V or 100V line operation, with taps selected by a rotary switch on the front baffle. The switch shall also provide for 16 ohm low impedance operation of the loudspeaker. Low and high frequency sections shall be integrated by an internal 3kHz passive network, with auto-resetting LF and HF fuses to protect the drivers from overload.
Dimensions including the grille (OD x D) shall be 245mm x 209mm (9.7ins x 8.23ins). Backcan depth shall be 192mm (7.55ins). Weight shall be 3kg (6.6lbs).
The loudspeaker shall be the Martin Audio ACS-55T.

You've just added this product to the cart: