Technical data
Sound pressure level (SPL) 1 W/1 m	91 dB
Frequency range (±10dB)	90 – 16.500 Hz
Dimensions (W x H)	220 x 220 mm
Rated load capacity (program)	6 W (15 W)
Shape	Angular
Adjustments at 100 V	6/3/1,5 W
Impedance	8 Ohm
Built-in depth	70 mm
Speaker	4" x 2,5"
Cutout (W x H)	187 x 187 mm, (±5mm)
Colour	White
Beam angle (1 kHz)	180° horizontal / 175° vertical
Sound pressure level (SPL) Pmax/1 m	101 dB

The SC-106 EN-1 is a ceiling-mounted speaker from the brand RCS Audio-Systems, specifically developed for use in voice alarm systems. It is certified according to EN 54-24:2008, a standard that applies to the safety and reliability of alarm devices in public and commercial buildings. This certification by a notified product certification body guarantees that the speaker meets the required specifications for acoustic signal transmission, mechanical stability, and fire behaviour. It is therefore suitable for safety-critical applications in schools, train stations, shopping centres, or administrative buildings.

Applications

The speaker is primarily designed for transmitting voice alarm announcements and acoustic warning signals. Its optimised frequency response ensures clear, intelligible voice reproduction, which remains effective even in larger rooms or with low background noise. Certification to EN 54-24:2008 makes it a reliable component of fire protection and evacuation systems.

Functions and Equipment in Detail

The SC-106 EN-1 features a quick-clamp mounting system, enabling tool-free and rapid installation. After removing the coated steel perforated plate, four screws can be tightened to securely fix the speaker. The construction is designed to be theft-resistant and vandalism-resistant, making it particularly suitable for public or high-traffic areas. The integrated cover hood provides drip protection, allowing the speaker to be used even in areas with increased humidity.

Technology Explained Simply

The speaker operates with a rated power of 6 W (program power) and a maximum power of 15 W. It is designed for 100-V networks and offers adjustments for 6 W, 3 W, and 1.5 W, enabling flexible integration into existing sound systems. The impedance is 8 Ohm, representing a standard adaptation for many sound systems. The frequency range is between 90 Hz and 16,500 Hz (±10 dB), ensuring balanced reproduction of speech and signals. The sound pressure level is 91 dB at 1 W/1 m and reaches 101 dB at maximum power, sufficient to ensure clear audibility even in larger rooms. The radiation angle is 180° horizontally and 175° vertically at 1 kHz, enabling wide and uniform sound dispersion.

Compatibility and Accessories

The speaker is available in a humid environment version, equipped with specially treated chassis and transformers. This variant is suitable for rooms with increased humidity, such as bathrooms, kitchens, or industrial facilities. The housing is made of impact-resistant, shock-resistant, and fire-retardant ABS plastic (UL94V0), which can optionally be painted in all RAL colours to match the ceiling colour.

Mounting and Installation

Installation is carried out using the quick-clamp system, which allows for simple and secure fastening. The cutout size is 187 x 187 mm (±5 mm), the external dimensions of the speaker are 220 x 220 mm, and the installation depth is 70 mm. The edge height of approximately 2 mm ensures a discreet, unobtrusive design that blends well into the ceiling surface.

Operational Advantages

The SC-106 EN-1 offers high reliability due to EN 54-24:2008 certification, easy mounting, robust construction, and clear voice reproduction. The integrated cover hood and the option of a humid environment version extend the range of applications. The housing made of flame-retardant ABS (UL94V0) contributes to fire safety requirements. Paintability in RAL colours allows optical adaptation to the surrounding environment.