Current cordless speakers are going to by nature squander a certain level of energy they consume. Choosing set of cordless speakers with high power efficiency could minimize the level of squandered power. Let me discuss some little-known details about power efficiency that will help you select the perfect type.
Numerous problems are attributable to cordless speakers which have low power efficiency: Cordless loudspeakers that have low power efficiency will waste some energy. It is smart to bear in mind the additional power expense when choosing between a high- and low-efficiency model. The wasted power is dissipated by the wireless speakers as heat. Heat does not dissipate properly through small surfaces. Thus low-efficiency wireless loudspeakers need to use heat sinks. Heat sinks and fans demand room and are expensive. The cordless loudspeakers therefore will turn out to be fairly large and costly. In addition heat fans are going to produce running noise. In order to help dissipate heat, low-power-efficiency amps will need adequate air circulation. Consequently they cannot be placed in places without circulation. Additionally, they cannot be installed in water-resistant enclosures.
You'll want to try to find the efficiency figure when looking for a pair of wireless speakers. The best place to check is the wireless loudspeakers data sheet. Efficiency is normally displayed in percent. Class-A amps are amongst the least efficient and provide a power efficiency of approximately 25% only. In comparison, switching amps, often known as "Class-D" amplifiers offer efficiencies of up to 98%. From the efficiency percentage you'll be able to compute the amount of energy the amp will squander. An amp with a 50% efficiency will squander half of the used energy. An amp with 90% efficiency is going to waste 10%.
While buying a set of wireless speakers, you will find the efficiency in the data sheet. This value is usually expressed as a percentage. Various amp topologies deliver different power efficiencies. Class-A amps are usually the least efficient and Class-D the most efficient. Standard power efficiencies range between 25% to 98%. From the efficiency percentage you can compute how much energy the amp is going to squander. An amp having a 50% power efficiency is going to squander half of the consumed energy. An amp that has 90% efficiency is going to waste 10%.
What is less known about efficiency is the fact that this figure is not fixed. The fact is it fluctuates based on how much energy the amp delivers. For that reason occasionally you will find efficiency values for different power levels in the data sheet. Since every amplifier will require a specific level of power, irrespective of the level of energy the amp delivers to the speakers, the amp power efficiency is higher the more energy the amp delivers and is typically specified for the maximum power the amp can handle. To determine the power efficiency, typically a test signal of 1 kHz is fed into the amplifier and a power resistor attached to the amp output to imitate the speaker load. Then the amp output signal is tested and the wattage calculated which the amp provides to the load which is then divided by the total power the amplifier utilizes. Because the efficiency is dependent upon the audio power, commonly the output power is swept and an efficiency curve made which will show the amplifier efficiency for each level of output power.
Although switching (Class-D) amps possess amongst the largest efficiency, they have a tendency to have higher audio distortion than analog audio amplifiers and lower signal-to-noise ratio. Hence you are going to need to weigh the size of the wireless speakers against the audio fidelity. Even so, the most recent wireless loudspeakers that use switching-mode music amplifiers, similar to Class-T amps, offer music fidelity that comes close to that of low-efficiency analog amplifiers and can be produced ultra small and lightweight.
Numerous problems are attributable to cordless speakers which have low power efficiency: Cordless loudspeakers that have low power efficiency will waste some energy. It is smart to bear in mind the additional power expense when choosing between a high- and low-efficiency model. The wasted power is dissipated by the wireless speakers as heat. Heat does not dissipate properly through small surfaces. Thus low-efficiency wireless loudspeakers need to use heat sinks. Heat sinks and fans demand room and are expensive. The cordless loudspeakers therefore will turn out to be fairly large and costly. In addition heat fans are going to produce running noise. In order to help dissipate heat, low-power-efficiency amps will need adequate air circulation. Consequently they cannot be placed in places without circulation. Additionally, they cannot be installed in water-resistant enclosures.
You'll want to try to find the efficiency figure when looking for a pair of wireless speakers. The best place to check is the wireless loudspeakers data sheet. Efficiency is normally displayed in percent. Class-A amps are amongst the least efficient and provide a power efficiency of approximately 25% only. In comparison, switching amps, often known as "Class-D" amplifiers offer efficiencies of up to 98%. From the efficiency percentage you'll be able to compute the amount of energy the amp will squander. An amp with a 50% efficiency will squander half of the used energy. An amp with 90% efficiency is going to waste 10%.
While buying a set of wireless speakers, you will find the efficiency in the data sheet. This value is usually expressed as a percentage. Various amp topologies deliver different power efficiencies. Class-A amps are usually the least efficient and Class-D the most efficient. Standard power efficiencies range between 25% to 98%. From the efficiency percentage you can compute how much energy the amp is going to squander. An amp having a 50% power efficiency is going to squander half of the consumed energy. An amp that has 90% efficiency is going to waste 10%.
What is less known about efficiency is the fact that this figure is not fixed. The fact is it fluctuates based on how much energy the amp delivers. For that reason occasionally you will find efficiency values for different power levels in the data sheet. Since every amplifier will require a specific level of power, irrespective of the level of energy the amp delivers to the speakers, the amp power efficiency is higher the more energy the amp delivers and is typically specified for the maximum power the amp can handle. To determine the power efficiency, typically a test signal of 1 kHz is fed into the amplifier and a power resistor attached to the amp output to imitate the speaker load. Then the amp output signal is tested and the wattage calculated which the amp provides to the load which is then divided by the total power the amplifier utilizes. Because the efficiency is dependent upon the audio power, commonly the output power is swept and an efficiency curve made which will show the amplifier efficiency for each level of output power.
Although switching (Class-D) amps possess amongst the largest efficiency, they have a tendency to have higher audio distortion than analog audio amplifiers and lower signal-to-noise ratio. Hence you are going to need to weigh the size of the wireless speakers against the audio fidelity. Even so, the most recent wireless loudspeakers that use switching-mode music amplifiers, similar to Class-T amps, offer music fidelity that comes close to that of low-efficiency analog amplifiers and can be produced ultra small and lightweight.
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