Subwoofer Speaker Deals
A speaker system is an electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard from a distance. Transducer is a device that converts energy in one form to another form . The purpose of a speaker (or loudspeaker) is to reproduce sound in an amplified manner .
The term speaker (loudspeaker) is used to refer to any of the following - an individual transducer also known as driver or to a collection of one or more drivers in an enclosure- complete speaker system.
Most of the speaker systems employ more than one driver –each driver to reproduce a specified range of frequencies - particularly for higher sound effect and better accuracy.
The drivers are also named according to their frequency ranges -
• Woofer or woofer speakers is the commonly used term and it refers to speaker drivers which produce sounds in the frequency range from 40 Hertz(Hz) up to about a kilo i.e., 1000 Hz or higher
• Subwoofer (or simply "sub") or subwoofer speaker is a driver or a complete speaker which is dedicated to the reproduction of the low pitched audio frequencies (“bass” ) in the range of around 20–200 Hz for consumer products.
• Mid-range speakers are drivers that produce sounds in between a frequency range of somewhere between 300 and 5000Hz.
• A tweeter speaker is a driver used for production of high audio frequencies, typically from around 2,000 Hz to 20,000 Hz (which is generally considered to be the upper limit of human hearing).
• Super Tweeter speaker is a speaker driver that can produce ultra- high frequencies in a multi-driver loudspeaker system. The frequencies can go up to 65000 Hz. It is also called HF or High.
The name “tweeter” is derived from the high pitched sounds made by birds and the name “woofer” is derived from low pitched barking or woofing of dogs.
How different frequency ranges are diverted to the dedicated speakers?
Here comes the necessity of crossovers. Use of multiple drivers in a system necessitates a filtering system, known as acrossover, which separates input signal to different frequency ranges and direct these separated frequency ranges to appropriate drivers (i.e. individual speakers in the speaker system).
Speakers are usually denoted as X.Y where the X and Y are numerical – X denoting number of main speakers and Y denoting number of sub-woofers. For example 2.0, 2.1,5.1,7.1 etc. denote –
2.0 No. of main speakers -2: Front-Left & Right, Subwoofer: nil
2.1 No. of main speakers - 2: Front-Left & Right; Subwoofer: 1
5.1 No. of main speakers – 5 : Front- Left & Right Front; Centre; Rear-Left & Right;
Subwoofer : 1
7.1 No of main speakers -7 : Front - Left & Right; Front- Centre, Middle- Left & Right, Rear - Left & Right: Subwoofer-1
Next to consider is Wattage Ratings and sensitivity specification. Just because a speaker can handle high wattage it does not mean that it will give out louder or better sound. That is why wattage rating and sensitivity specifications are to be looked into in combination.
Another factor to consider while purchasing a speaker system is the place where the system will be located. For a speaker system that will be used at home - the size of the room where the speaker will be placed and location of the speakers along with the condition of the room, need to be considered.
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