RCF HD 21EN Voice Alarm Horn Speaker

RCF HD 21EN Voice Alarm Horn Speaker

The RCF HD 21EN is a plastic horn loudspeaker intended for broadcasting intelligible alarm messages. Its compression-driver configuration provides high sensitivity, with transformer selection and protected connections for integration into the specified voice alarm system.

The specified frequency response is 340 Hz – 9000 Hz. Rated power handling is 30 W. Maximum sound pressure level at one metre is 117 dB. These characteristics define how the component fits into the supported audio arrangement and provide the starting point for selecting the associated equipment and operating settings.

The physical specification lists height 212 mm, depth 280 mm, weight 2.1 kg. The enclosure material is ABS. The specified finish is Grey – RAL 7035. The product’s physical format should be considered alongside the installation position, the surrounding equipment and the space required to reach its connection points.

Speaker placement should be planned around the listening area and the type of coverage required. Mounting position, distance from listeners and the surrounding room layout all affect the complete installation. The loudspeaker’s specified connection method and load should be matched to the selected amplification system before the final layout is established.

For a distributed sound installation, consider the speaker position and cable route together. The chosen operating settings should remain consistent with the amplifier and the connected speaker line. Keep the relevant connection points accessible during assembly, and use the model-specific mounting instructions to establish the final orientation and physical attachment arrangement. The final arrangement should follow the documented product configuration and remain matched to the intended system components.

Features of HD 21EN

• 1.5″ compression driver.
• Power selectable (100 V): 30 W – 15 W – 7.5 W – 3.75 W.
• 104 dB sensitivity.
• Colour Grey – RAL 7035
• Plastic body.
• In/out ceramic terminal block.
• Thermal fuse protection.
• Protection grade IP66.

Specifications of HD 21EN