Rated 4.9 (79 reviews)
The Martin Audio ADORN ACS-55T is a 5.25″ enclosed ceiling speaker with a generous internal volume backcan that maximises low-frequency output. Its wide 150° conical coverage delivers consistent audio across large floor areas from fewer speakers, making it ideal for hotels, concourses, retail outlets, bars and restaurants where full-range ceiling audio is required.
5.25″ (100mm)
LF Driver
113 dB
Peak SPL · @ 1 metre
150°
Coverage · conical
62 Hz
Bass Extension
Flexible Drive OptionsThe ACS-55T supports 70V/100V line operation via its integrated transformer, with taps selected by a rotary switch behind the perforated steel grille. The switch also provides a 16-ohm low-impedance setting, allowing four or more speakers to be driven in parallel from a single amplifier channel.
Features
5.25″ LF driver with 0.75″ silk-dome tweeter
150° conical coverage reduces speaker count
Ported bass reflex design with generous backcan volume
Strong bass extending down to 62 Hz
Integrated 70V/100V transformer with rotary tap selector
16-ohm low-impedance option for parallel drive
Auto-resetting thermal fuse overload protection
Powder-coated perforated steel grille in white
NoteFor ceilings with limited cavity depth, consider the ACS-55TS shallow-backcan variant which requires only 100 mm of ceiling depth.
Specifications
| Type | Enclosed ceiling speaker with 70V/100V transformer |
| LF Driver | 5.25″ (100 mm) |
| HF Driver | 0.75″ (19 mm) silk dome |
| Peak SPL | 113 dB @ 1m |
| Coverage | 150° conical |
| Frequency Response | 62 Hz-20 kHz |
| Finish | White |
| SKU | ACS-55T-W |
