Audio Speakers

Audio Speaker

Depending on the scale of your conference or event, another important aspect of conference equipment is the choice of audio speakers. Clarity of your speech is the first step, and the next is to make sure you can be heard by everyone present. If the speakers are too soft, it would lead to lack of information being transmitted out while being too loud could overwhelm and agitate audiences. Furthermore, speakers may affect other important details of audio such as delays, feedback and echoes. The audio speaker transmits the frequency of the vibrations and governs the pitch of the sound produced, and their amplitude affects the volume. There are different types of speakers such as active speaker, passive speakers, studio speakers (studio monitors) and subwoofer speakers.

Active Speakers & Studio Speakers

Also sometimes called powered speaker, it has a built-in amplifier. They can be connected directly to any audio signal source without the need for an external amplifier. The advantages of an active speaker are that it is compact and simple. Furthermore, additional amplifiers can be chosen to closely match the optimal requirement of the speaker it will power. The disadvantages is that there is reduced reliability due to active electronic components within; and the need to supply both the audio signal and power to every unit separately, typically requiring two cables to be run to each speaker.

Frequency range: 20 Hz–200 kHz

Passive Speakers

They require a separate amplifier. It splits the audio signal and sends each band directly to the loudspeaker drivers, which are then sent to the speakers. The advantage is that it is more flexible and it allows for upgrades without replacement of the other components. It also allows either components to be replaced for a temporary one should it be required. The disadvantage is that you will also need to choose speakers and an amplifier that are compatible in terms of their power ratings and impedance. Furthermore, there is greater potential for signal loss over long distances.

Frequency range: 250–4000Hz

Studio speakers

Also known as studio monitor, these are speakers enclosed within a designated area. Examples include recording studio, filmmaking studio or home studios. They are designed to project sound over a short distance to prevent the room from distorting its frequency. Studio monitors benefit recording engineers by providing unadulterated sound for accurate music mixing.

Frequency range: 20 Hz–200 kHz

Subwoofer Speakers

A subwoofer speaker is a loudspeaker unit designed to produce extremely low-frequency bass sounds. Subwoofers are intended to augment the low frequency range of loudspeakers covering higher frequency bands. It can come in the form of an active or passive type. The first subwoofers were developed fairly recent in the 1960s to add bass to home stereo system. It grew in popularity in the 1970s and is now widely used for many aspects including movie theatres, concerts and nightclubs.

Frequency range: 20–200 Hz