MCR 4EN EN54-24 Certified Ceiling Loudspeaker
Product Overview
Product Description
The AMC MCR 4EN is a ceiling-mounted loudspeaker specifically designed for voice evacuation and alarm systems. It ensures high speech intelligibility and reliable performance during emergency situations. The loudspeaker features optimized mid-frequency reproduction and a high sound pressure level, making it suitable for critical communication. Equipped with quick-fit clamps, the unit allows for fast and secure installation into false ceilings. It is fully compliant with the EN54-24 standard.
Visual Description
The product is a white or black circular ceiling loudspeaker with a protective grille. Installation diagrams show its dimensions: an overall diameter of 181 mm, a depth of 65 mm, and a required ceiling cutout diameter of 155 mm.
Performance graphs are provided:
- Frequency Response: A graph showing sound pressure level (dB SPL) versus frequency (Hz). The response is relatively flat from approximately 200 Hz to 10 kHz, with a peak in the mid-frequencies, and tapers off at higher frequencies.
- Impedance: A graph showing impedance (Ω) versus frequency (Hz) for three different power tap settings (6W, 3W, 1.5W). Impedance is highest at low frequencies and decreases with increasing frequency for all settings.
Technical Specifications
| Specification | Value |
|---|---|
| Rated power | 6 W |
| Transformer power taps | 6 W - 3 W - 1.5 W |
| Transformer impedance | 1.67 kΩ – 3.33 kΩ – 6.66 kΩ |
| Sensitivity | 77 dB (1W/4 m) |
| Maximum SPL | 84 dB (Pmax/4m) |
| Frequency response | 110 Hz - 15 kHz |
| Dispersion at 500 Hz | 180° conical |
| Dispersion at 1000 Hz | 180° conical |
| Dispersion at 2000 Hz | 150° conical |
| Dispersion at 4000 Hz | 100° conical |
| Driver dimensions | 4" (100 mm) |
| Operating temperature | -10°C - +35°C |
| Dimensions | Ø181 mm x 67.5 mm |
| Weight | 0.76 kg |
| Material | Steel |
| Colour | White (RAL 9016), Black (RAL 9017) |
Certifications and Compliance
The MCR 4EN is EN54-24 certified (1438-CPR-1120, Type A). The document includes product identification: AMC 2017-03, Revision 2025-08-05, EN54-24:2008, Issue Date: 2025-06-18, DOP No.: AMC-1611.
