The Difference Between a PA System and a Loudspeaker: Unveiling the Confusion
When we talk about audio equipment, it is easy to get confused about the terms 'loudspeaker' and 'PA system'. Both terms have been around for a long time, but understanding the differences between them is crucial for effective communication and accurate equipment selection.
History and Naming
The term 'loudspeaker' or 'loudspeaker' has been in use for nearly a century, and it is quite logical to call these devices by such a name. When these devices were installed in a box, they were simply referred to as a box. The unboxed unit is often today called a 'driver', as confusion can arise if it is not specified. Boxes with multiple drivers often employ the term 'cabinet' or 'cab' among guitarists. These can contain anywhere from 4 to 8 or more drivers.
HIFI and PA Equipment Comparison
For home audio setups, high-fidelity (hifi) systems can be found with 2 boxes, each containing 3 drivers. These hifi boxes are nailed to a wall at a height that is usually just above the listener's head when seated. Home hifi speakers are what you might call 'speakers'. However, when addressing a larger audience or using a venue larger than your living room, a different approach is necessary.
PA Speakers for Larger Audiences
If you wish to address a larger group, you may use one or more of these hifi boxes, which are designed to project sound to a wider audience. These speakers are often called 'speakers' but are typically referred to as 'PA speakers' or 'public address' speakers. They come in various forms—powered and passive. Powered speakers have an internal amplifier that is powered by either mains or battery power, giving them the capability to accept input from various sources such as microphones, instruments, and Bluetooth.
Passive versions, although similar in appearance, do not have an internal amplifier and must be driven from an external source. Single devices, such as those used in shopping malls or real estate auctions, are occasional sights. However, more often, you will see them in pairs, mounted on poles to better spread live music performance. This has been the traditional setup for decades; they are still commonly known as 'speakers' in such instances.
Modern PA Systems
Modern PA systems go beyond simple speaker setups. They are more likely to be recognized as 'PA systems' rather than 'speakers'. A PA system consists of a mixer, an amplifier, arrays of speakers, and subwoofers. These integrated components work together to improve the sound quality and coverage needed for larger venues.
Important Considerations
It’s worth noting that all PA systems use loudspeakers, but some PA systems use 70-volt transformers on the speakers. These transformers are used in certain settings to manage the power distribution and are not something the average user needs to concern themselves with. Understanding the difference between a PA system and a loudspeaker is essential for ensuring that you select the right equipment for your specific needs.
Understanding these distinctions may seem like a small detail, but it can make a significant impact on the effectiveness and sound quality of your audio setup. So, the next time you’re discussing sound systems, you’ll be able to communicate with confidence.
Now, let’s delve into the world of speaker cables, another crucial component in the realm of audio equipment.
Conclusion
PA systems and loudspeakers serve the same fundamental purpose—projecting sound. However, the scope and complexity of a PA system go beyond that of a simple loudspeaker. By understanding the differences and purposes, you can make more informed decisions about the audio equipment you need to achieve the best sound quality and coverage for your projects.
For more information on audio components, stay tuned for our upcoming discussions on speaker cables.