Mixing amplifiers with audio sources

100V amplifiers (or 100V line) are specifically designed for large-scale public address installations, such as supermarkets, warehouses, or schools. They allow a large number of speakers to be connected in parallel over long distances using small cross-section cables, thereby minimizing power loss. The speakers used must be equipped with 100V transformers. In contrast, low impedance amplifiers (4, 8, or 16 Ω) are suitable for smaller installations requiring high audio fidelity, such as bars or restaurants. They require thicker cables and a total speaker impedance matching that of the amplifier to prevent overloading. Certain models, like the AM-40D or AM-80D, offer dual 100V and low impedance compatibility, ensuring great installation flexibility.

A 1-zone mixer amplifier with built-in audio sources, such as the AM-40D or AM-80D models, offers an ideal all-in-one solution for applications requiring simple and efficient sound broadcasting. Built-in Bluetooth allows for wireless streaming from a smartphone or tablet, while the USB port and SD player facilitate MP3 file playback. The integrated FM Tuner provides direct access to radio stations. These features reduce the need for external equipment, simplify installation, and allow for easy broadcasting of background music or announcements. The mixer function enables simultaneous management of multiple audio sources, such as background music and a microphone announcement.

The choice of power for a 1-zone amplifier depends mainly on the area to be covered, the number and power of the connected speakers, as well as the desired sound level. For a 100V line installation, the total speaker power (the sum of each speaker's power on their 100V tap) must not exceed 80% of the amplifier's output power. For example, for a 40W amplifier like the AM-40D, the cumulative power should not exceed 32W. It is crucial to allow for this safety margin to guarantee optimal performance and equipment longevity.

1-zone amplifiers are equipped with various connectors to adapt to different needs. Combo XLR/6.35 mm Jack inputs allow for the connection of professional microphones (XLR) or instruments and line sources (6.35 mm Jack). AUX RCA inputs accommodate consumer audio sources such as CD/DVD players or computers. The LINE OUT RCA output allows the mixed audio signal to be sent to another amplifier or a recorder. Euroblock terminals, found on power amplifiers, offer secure and reliable connections for audio inputs and outputs, particularly suitable for fixed installations. Finally, screw terminals for speakers ensure a robust connection in 100V or low impedance. These connectors guarantee great flexibility for integrating the amplifier into existing audio systems or for creating new installations.

Yes, several 1-zone amplifier models, notably models like the AM-350D, are designed to be rack-mountable in the standard 19-inch 1U format. They come with integrated mounting brackets, facilitating their integration into professional public address racks or technical racks. Regarding protection, our amplifiers include essential features to ensure reliability: protection against overload, short circuits, and overheating (thermal protection). Some models also feature fans for active cooling and HPF filters (high-pass filters) to optimize sound broadcasting according to the installation environment.