The Martin Audio ADORN ACS-55TS is a 5.25″ enclosed ceiling speaker with a shallow 100 mm backcan, designed for flush-mount installation in ceilings with limited cavity depth. It shares the same driver complement and wide coverage as the standard ACS-55T but in a more compact enclosure, making it suited to retrofit and low-ceiling installations in hotels, retail, hospitality and corporate environments.
LF Driver
5.25″ (100mm)
Peak SPL
113 dB
@ 1 metre
Coverage
150°
conical
Backcan Depth
100 mm
Flexible Drive Options
The ACS-55TS 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
5.25″ LF driver with 0.75″ silk-dome tweeter
✓
150° conical coverage reduces speaker count
150° conical coverage reduces speaker count
✓
Shallow 100 mm backcan for limited ceiling cavities
Shallow 100 mm backcan for limited ceiling cavities
✓
Bass extending down to 79 Hz
Bass extending down to 79 Hz
✓
Integrated 70V/100V transformer with rotary tap selector
Integrated 70V/100V transformer with rotary tap selector
✓
16-ohm low-impedance option for parallel drive
16-ohm low-impedance option for parallel drive
✓
Auto-resetting thermal fuse overload protection
Auto-resetting thermal fuse overload protection
✓
Powder-coated perforated steel grille in white
Powder-coated perforated steel grille in white
Note
The shallow backcan trades some low-frequency extension (79 Hz vs 62 Hz) compared to the standard ACS-55T. Where ceiling depth allows, the standard version will deliver stronger bass performance.
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 | 79 Hz – 20 kHz |
| Backcan Depth | 100 mm (shallow) |
| Finish | White |
| SKU | ACS-55TS-W |
