The Martin Audio ADORN ACS-40TS is a 4″ enclosed ceiling speaker with a shallow backcan, designed for flush-mount installation in ceilings with limited cavity depth. Its exceptionally wide 180° conical coverage makes it particularly effective in low-ceiling environments, reducing the number of speakers needed for even coverage across retail, hospitality, corporate and leisure spaces.
LF Driver
4″ (100mm)
Peak SPL
108 dB
@ 1 metre
Coverage
180°
conical
Line Voltage
70V / 100V
Flexible Drive Options
The ACS-40TS 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
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4″ LF driver with 0.75″ silk-dome tweeter
4″ LF driver with 0.75″ silk-dome tweeter
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180° conical coverage — ideal for low ceilings
180° conical coverage — ideal for low ceilings
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Shallow backcan for minimum ceiling cavity depth
Shallow backcan for minimum ceiling cavity depth
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Integrated 70V/100V transformer with rotary tap selector
Integrated 70V/100V transformer with rotary tap selector
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Ported design with bass extending down to 73 Hz
Ported design with bass extending down to 73 Hz
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16-ohm low-impedance option for parallel drive
16-ohm low-impedance option for parallel drive
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Auto-resetting thermal fuse overload protection
Auto-resetting thermal fuse overload protection
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Powder-coated perforated steel grille in white
Powder-coated perforated steel grille in white
Specifications
| Type | Enclosed ceiling speaker with 70V/100V transformer |
| LF Driver | 4″ (100 mm) |
| HF Driver | 0.75″ (19 mm) silk dome |
| Peak SPL | 108 dB @ 1m |
| Coverage | 180° conical |
| Frequency Response | 73 Hz – 20 kHz |
| Backcan | Shallow profile |
| Finish | White |
| SKU | ACS-40TS-W |
