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Let me have a look at the expression "power efficiency" that lets you know exactly how much cordless speakers squander to help you select a pair of wireless speakers.
The less efficient your cordless speakers are, the more energy will be wasted which results in a number of difficulties: Cordless speakers with small efficiency are going to squander some power. It is smart to make note of the additional energy cost while choosing between a high- and low-efficiency product. The squandered energy is dissipated by the wireless speakers as heat. Heat won't dissipate properly through little surfaces. As a result low-efficiency wireless loudspeakers need to use heat sinks. Heat sinks and fans are heavy, use up space and also produce noise. In order to help dissipate heat, low-power-efficiency amplifiers will need enough air movement. As a result they cannot be placed in places with no circulation. In addition, they can't be mounted inside water-proof enclosures.
Low-efficiency types demand more total energy to output the same amount of audio power as high-efficiency types. Thus they need a larger power source which makes the cordless loudspeakers costlier to make. Further, due to the large amount of heat, there is going to be considerably greater thermal stress on the electrical components and also interior materials which may cause reliability issues. On the other hand, high-efficiency cordless speakers can be produced small and light. While searching for a couple of cordless speakers, you can find the efficiency in the data sheet. This figure is usually shown as a percentage. Analog Class-D amplifiers offer a power efficiency of around 25% while switching-mode amps provide close to 98%. From the efficiency percentage you can work out just how much energy the amp will waste. An amplifier having a 50% efficiency is going to squander 50 % of the consumed energy. An amp with 90% efficiency will waste 10%.
However, there are several things to notice regarding power efficiency. First of all, this value is dependent on the amount of energy that the amplifier is delivering. Since every amplifier will demand a particular amount of energy, irrespective of the amount of power the amplifier delivers to the loudspeakers, the amp efficiency is larger the more power the amp delivers and is normally specified for the maximum power the amp can handle.
To be able to measure the power efficiency, normally a test tone of 1 kHz is fed into the amplifier and a power resistor attached to the amp output to imitate the speaker load. Next the amplifier output signal is tested and the wattage calculated which the amplifier delivers to the load which is next divided by the overall energy the amplifier utilizes. Generally a complete power profile is plotted in order to show the dependence of the efficiency on the output power. For this reason the output power is swept through various values. The efficiency at each value is calculated and a power efficiency plot created.
Whilst switching (Class-D) amplifiers have amongst the highest efficiency, they have a tendency to possess higher sound distortion than analog audio amps and reduced signal-to-noise ratio. Thus you will need to weigh the size of the wireless loudspeakers against the music fidelity. A few more sophisticated cordless loudspeakers, just like products that contain Class-T amps, have the ability to minimize audio distortion to levels close to the ones from products using analog audio amps and also are able to achieve high signal-to-noise ratio. Deciding on one of these kinds of wireless loudspeakers will deliver high power efficiency and at the same time large music fidelity.
The less efficient your cordless speakers are, the more energy will be wasted which results in a number of difficulties: Cordless speakers with small efficiency are going to squander some power. It is smart to make note of the additional energy cost while choosing between a high- and low-efficiency product. The squandered energy is dissipated by the wireless speakers as heat. Heat won't dissipate properly through little surfaces. As a result low-efficiency wireless loudspeakers need to use heat sinks. Heat sinks and fans are heavy, use up space and also produce noise. In order to help dissipate heat, low-power-efficiency amplifiers will need enough air movement. As a result they cannot be placed in places with no circulation. In addition, they can't be mounted inside water-proof enclosures.
Low-efficiency types demand more total energy to output the same amount of audio power as high-efficiency types. Thus they need a larger power source which makes the cordless loudspeakers costlier to make. Further, due to the large amount of heat, there is going to be considerably greater thermal stress on the electrical components and also interior materials which may cause reliability issues. On the other hand, high-efficiency cordless speakers can be produced small and light. While searching for a couple of cordless speakers, you can find the efficiency in the data sheet. This figure is usually shown as a percentage. Analog Class-D amplifiers offer a power efficiency of around 25% while switching-mode amps provide close to 98%. From the efficiency percentage you can work out just how much energy the amp will waste. An amplifier having a 50% efficiency is going to squander 50 % of the consumed energy. An amp with 90% efficiency will waste 10%.
However, there are several things to notice regarding power efficiency. First of all, this value is dependent on the amount of energy that the amplifier is delivering. Since every amplifier will demand a particular amount of energy, irrespective of the amount of power the amplifier delivers to the loudspeakers, the amp efficiency is larger the more power the amp delivers and is normally specified for the maximum power the amp can handle.
To be able to measure the power efficiency, normally a test tone of 1 kHz is fed into the amplifier and a power resistor attached to the amp output to imitate the speaker load. Next the amplifier output signal is tested and the wattage calculated which the amplifier delivers to the load which is next divided by the overall energy the amplifier utilizes. Generally a complete power profile is plotted in order to show the dependence of the efficiency on the output power. For this reason the output power is swept through various values. The efficiency at each value is calculated and a power efficiency plot created.
Whilst switching (Class-D) amplifiers have amongst the highest efficiency, they have a tendency to possess higher sound distortion than analog audio amps and reduced signal-to-noise ratio. Thus you will need to weigh the size of the wireless loudspeakers against the music fidelity. A few more sophisticated cordless loudspeakers, just like products that contain Class-T amps, have the ability to minimize audio distortion to levels close to the ones from products using analog audio amps and also are able to achieve high signal-to-noise ratio. Deciding on one of these kinds of wireless loudspeakers will deliver high power efficiency and at the same time large music fidelity.
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Check out this informative post to help you come across extra info on indoor outdoor speakers.
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