I am going to take a look at the word "power efficiency" which shows you how much cordless speakers squander to help you decide on a set of cordless loudspeakers. A number of challenges are brought on by wireless speakers which have low power efficiency: Low-efficiency wireless speakers are going to squander a certain amount of power as heat and so are more costly to use when compared with high-efficiency models because of their larger power consumption. Wireless speakers that have lower efficiency typically have various heat sinks to help radiate the squandered energy. These heat sinks use up a reasonable amount of room and make the wireless speakers large and heavy. Further more, they raise the cost of the wireless loudspeakers. Low-efficiency cordless loudspeakers additionally need a great deal of circulation around the cordless loudspeakers. Therefore they can't be put in close spaces or inside air-tight enclosures.
Wireless loudspeakers with small efficiency have to have a larger power supply to output the identical amount of audio power as high-efficiency products. Additionally, due to the large level of heat, there is going to be much higher thermal stress on the electrical elements and interior materials which may cause reliability problems. In comparison, high-efficiency wireless speakers can be produced small and light.
Since low-efficiency wireless speakers are going to deliver merely a small fraction of the power consumed by the amp as usable audio energy, the amp needs a bigger power source than high-efficiency products resulting in more expensive. In addition, due to the large amount of heat, there is going to be much greater thermal stress on the electrical elements as well as interior materials that might cause dependability problems. In contrast, high-efficiency cordless speakers can be made small and light. While buying a set of wireless speakers, you can find the efficiency in the data sheet. This value is frequently listed as a percentage. Analog Class-D amps offer a power efficiency of approximately 25% whilst switching-mode amps provide up to 98%. From the efficiency percentage it is possible to compute how much power the amplifier is going to squander. An amplifier which has a 50% efficiency will squander half of the consumed energy. An amplifier that has 90% efficiency is going to waste 10%.
Take note, though, that efficiency depends upon how much energy the amp provides at a given moment. Amplifiers have greater efficiency when delivering higher output power than while running at small power mainly because of the fixed power that they consume regardless of the output power. The efficiency figure in the amplifier data sheet is usually provided for the maximum amp output power.
The measurement setup of amp efficiency uses a power resistor which is connected to the amplifier. The amplifier itself is being fed a constant-envelope sine-wave tone. Next the power absorbed by the resistor is tested and divided by the power the amp consumes. Because the efficiency depends upon the audio power, generally the output power is swept and an efficiency graph created which is able to show the amp efficiency for each level of output power.
Wireless speakers that use switching-mode amps have a switching stage which will cause a certain level of non-linear behavior. Therefore wireless speakers that use Class-D amps usually have lower audio fidelity than models utilizing analog Class-A amplifiers. Due to this fact you will need to base your decision on whether you require small size and minimal power consumption or maximum audio fidelity. However, digital amplifiers have come a long way and are offering improved music fidelity than in the past. Wireless loudspeakers that employ Class-T amplifiers come close to the audio fidelity of products which have analog amps. Due to this fact picking a set of cordless loudspeakers which employ switching amplifier with good audio fidelity is now possible.
Wireless loudspeakers with small efficiency have to have a larger power supply to output the identical amount of audio power as high-efficiency products. Additionally, due to the large level of heat, there is going to be much higher thermal stress on the electrical elements and interior materials which may cause reliability problems. In comparison, high-efficiency wireless speakers can be produced small and light.
Since low-efficiency wireless speakers are going to deliver merely a small fraction of the power consumed by the amp as usable audio energy, the amp needs a bigger power source than high-efficiency products resulting in more expensive. In addition, due to the large amount of heat, there is going to be much greater thermal stress on the electrical elements as well as interior materials that might cause dependability problems. In contrast, high-efficiency cordless speakers can be made small and light. While buying a set of wireless speakers, you can find the efficiency in the data sheet. This value is frequently listed as a percentage. Analog Class-D amps offer a power efficiency of approximately 25% whilst switching-mode amps provide up to 98%. From the efficiency percentage it is possible to compute how much power the amplifier is going to squander. An amplifier which has a 50% efficiency will squander half of the consumed energy. An amplifier that has 90% efficiency is going to waste 10%.
Take note, though, that efficiency depends upon how much energy the amp provides at a given moment. Amplifiers have greater efficiency when delivering higher output power than while running at small power mainly because of the fixed power that they consume regardless of the output power. The efficiency figure in the amplifier data sheet is usually provided for the maximum amp output power.
The measurement setup of amp efficiency uses a power resistor which is connected to the amplifier. The amplifier itself is being fed a constant-envelope sine-wave tone. Next the power absorbed by the resistor is tested and divided by the power the amp consumes. Because the efficiency depends upon the audio power, generally the output power is swept and an efficiency graph created which is able to show the amp efficiency for each level of output power.
Wireless speakers that use switching-mode amps have a switching stage which will cause a certain level of non-linear behavior. Therefore wireless speakers that use Class-D amps usually have lower audio fidelity than models utilizing analog Class-A amplifiers. Due to this fact you will need to base your decision on whether you require small size and minimal power consumption or maximum audio fidelity. However, digital amplifiers have come a long way and are offering improved music fidelity than in the past. Wireless loudspeakers that employ Class-T amplifiers come close to the audio fidelity of products which have analog amps. Due to this fact picking a set of cordless loudspeakers which employ switching amplifier with good audio fidelity is now possible.
Tidak ada komentar:
Posting Komentar