PROFESSIONAL USE SOUND SYSTEMS
- Stereo and 2.1 stereo audio systems
- Commercial / BGM Audio Systems (100 Volt)
- Studio / Broadcasting audio systems
- Audio systems Public Address (PA) & Sound Reinforcement
- Stereo and 2.1 stereo audio systems
Analyzing the above basic categories, and starting from the first one, we will simply mention that this is the simplest category, which, however, we meet by heart as it addresses a wide range of professions, which are practiced through office spaces. The application of these systems does not require special knowledge, as each of us can apply such a system, even in their basic form as that of desktop audio, ie simple standalone audio systems. In other cases where our requirements are greater - such as in a multi-office space - there is the possibility of such sound systems, as long as we choose to serve this condition the appropriate speakers, but also the appropriate amplifier that will drive them (as in the case of the multi-band amplifiers we encountered above).
- Commercial / BGM Audio Systems (100 Volt)In the second large category, we find the Commercial / BGM speakers, which consist of speakers and special form amplifiers. More specifically, these systems operate in areas where music background (BGM) or announcement playback is required. Such places are shops, public catering establishments, hotels, educational institutions, etc.A standard stereo amplifier, and a few pairs of speakers could provide a small business, such as a restaurant, adequate background music but this would not work well on a system with many speakers and long cable runs. Classic stereo amplifiers reproduce a low voltage - high power signal, which in order to power the speakers requires large cross-section cables and complex connections between the speakers. It is this condition that greatly increases the cost of installing a conventional system making this option unprofitable.By using special systems that have a voltage transformer of 70/100 Volt, and "loading" the audio signal on this high voltage, we achieve the fall of the requirements in power transmitted through the cables and consequently our requirements in large cross sections. . At the same time we use a single cable per audio band regardless of the number of speakers in the room, while reducing our requirements for different amplifiers. This automatically reduces the cost of the installation, which is important when creating a new business space.
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Studio / Broadcasting audio systems
In the category of studio & Broadcasting sound systems, we find mainly small speakers which each have their own amplifier and are of high quality in order to give us the best and most faithful reproduction of sound in the workplace. It is easy to understand that in a studio, the requirements for proper listening are high as we have to accurately receive in our ears the sound as it is reproduced from the primary source, such as a singer, or a group of musicians. A similar condition is found in professional broadcasting venues such as a radio station.
- Audio systems Public Address (PA) & Sound ReinforcementLarge and the next category of audio that we consider, as it includes every installation of live audio playback, whether it comes from a group of musicians, or is played through music machines such as cd players, by a DJ.In terms of equipment composition, we would say that it is simple in terms of its basic structure, as it consists of conventional speakers and high power amplifiers. However, we must take into account that in order to proceed with the supply and installation of the system suitable for our professional space, we must definitely turn to the appropriate professional systems consultant, as specialized knowledge and extensive experience are required.In an attempt to approximate how this class works, we could say that a microphone, an audio mixing console, an amplifier, and a pair of speakers are a small PA system. More specifically, for the composition of a PA system we use:
- MAIN SPEAKER SYSTEM:
These speakers are divided into two categories. Active speakers are powered, which means they have built-in amplifiers. All that is required is to connect the audio source directly (microphones, instruments, etc.) or to connect them via an audio mixing console. Passive speakers are not powered on, which means you will need to add an external amplifier. There are pros and cons to each type of speaker, and the final choice depends largely on how you plan to use your PA system. For example, the active ones are used more in cases where their frequent transport is required, while the passive speakers are the ideal solution in permanent installations.
- MIXING CONSOLES:
Mixing consoles are the heart and control center of PA systems All music and audio sources can be mixed in the mixing console, and then sent to the amplifiers and speakers. Each mixing console has volume and tone controls for each input channel, enabling the user to balance the individual signals and create a clear output signal.
- SOUND PROCESSORS:
Most of the audio processing required for the proper performance of a PA system is usually integrated into the mixing console and amplifiers, and is mostly sufficient, especially when it comes to a small basic system. Larger systems, however, require the possibility of more detailed adaptation to space, so the addition of sound processors is one way in our choices. Audio processors incorporate the following:- Equalizers: Equalizers are used to configure the sound so that the sound effect can be adjusted in space. This parameterization is performed per sound frequency (linear eq), or per frequency range (parametric eq).
- Limiters: Limiters are used as safety devices in the system, as they set limits on the final output power of the amplifier so that it does not exceed the strength of the speakers it drives.
- Effects: The effect units enable us to color the sound so as to create a more pleasing and impressive effect for the audience.