The Oyster SIGN™ Series loudspeakers have been designed with the utmost care in every single detail. They offer amazing performances for both HI-FI and Home Theater applications.

The S53 IoT of the SIGN series is an invisible loudspeaker with dimensions (WxHxD) mm 366x466x11, a nominal power of 50+50 Watt and a nominal impedance of 8+8 Ohm.
Used for Sound Masking applications in Home and Building Automation systems.

Thanks to the specific AudioPanel technology, the Sign S53 IoT is recommended for use in systems where, in addition to the sound system, any alarm must be broadcasted (on a dedicated audio channel) by exploiting the "surprise" effect caused by a sound source hidden.


It allows a better organization of spaces as it is installed directly on walls, ceilings or other furnishing elements. The innovative fixing system (FPF) designed by Oyster simplifies assembly and allows the installer to save considerable time. Characterized by a sound diffused in all directions, it guarantees an intense and unique sound experience, both in modern and historical and valuable environments!


AudioPanel ApplicationsAudioPanel Technology

Nominal impedance

8+8 Ohm

Sensibility (2,83V @ 1 m)

90 Db

Sound pressure level

100 Db SPL

Frequency response

65/20000 Hz

Nominal power

50 + 50 Watt

Active radiant air

1625 cm2


180/180 Horizontal°/Vertical°

Operating temperature

-10 / +60 °C

Weight (Kg)


Dimensions (LxAxP mm)

366 x 446 x 11