Today's cordless loudspeakers are going to by nature squander a certain amount of energy they consume. Choosing pair of wireless speakers with high efficiency could lower the level of squandered power. I'll describe several little-known details about efficiency that will help you choose the perfect product.
A fairly large amount of power is radiated as heat should you get a set of low-efficiency wireless loudspeakers. This may contribute to several problems: Cordless loudspeakers with lower efficiency will squander some energy. It's best to be aware of the added power cost while choosing between a high- and low-efficiency product. The wasted energy is dissipated by the cordless speakers as heat. Heat doesn't radiate well through tiny surfaces. For this reason low-efficiency cordless speakers must use heat sinks. These heat sinks use up a reasonable amount of space and make the wireless loudspeakers bulky and heavy. Further more, they raise the price of the cordless loudspeakers. Low-efficiency wireless speakers further require a good amount of circulation around the cordless speakers. Consequently they cannot be put in close spaces or inside air-tight enclosures.
Given that low-efficiency wireless loudspeakers will produce just a small fraction of the power consumed by the amp as usable audio energy, the amplifier requires a larger power supply than high-efficiency products resulting in higher cost. Further, because of the large level of heat, there will be much higher thermal stress on the electrical components and also interior materials which may cause reliability issues. On the other hand, high-efficiency wireless speakers can be made small and light. You should search for the efficiency value whilst on the lookout for a set of cordless loudspeakers. The best place to check is the cordless speakers data sheet. Efficiency is normally displayed in percent. Analog Class-D amplifiers offer a power efficiency of roughly 25% while switching-mode amps provide close to 98%. The larger the efficiency value, the less the level of energy squandered as heat. A 100-Watt amplifier with a 50% efficiency would have an energy usage of 200 W.
You need to look for the efficiency figure whilst on the lookout for a set of wireless loudspeakers. The best spot to look is the wireless loudspeakers data sheet. Efficiency is commonly shown in percent. Analog Class-D amplifiers offer a efficiency of close to 25% while switching-mode amps provide as much as 98%. The larger the efficiency figure, the less the level of power squandered as heat. A 100-Watt amplifier with a 50% efficiency would have a power usage of 200 W.
The measurement setup of amplifier efficiency employs a power resistor which is connected to the amp. The amp is being fed a constant-envelope sine-wave tone. Then the energy used by the resistor is tested and divided by the power the amp uses. Usually a complete power report is plotted in order to display the dependency of the efficiency on the output power. This is why the output power is swept through different values. The efficiency at every value is calculated plus a power efficiency plot generated.
Wireless loudspeakers that use switching-mode amps contain a switching stage that leads to a certain amount of non-linear behavior. Thus cordless speakers that use Class-D amplifiers usually offer smaller music fidelity than types utilizing analog Class-A amps. Due to this fact you will need to base your decision on whether you need small dimensions and low energy usage or greatest music fidelity. Nonetheless, the latest wireless speakers that use switching-mode audio amplifiers, just like Class-T amps, provide audio fidelity that comes close to that of low-efficiency analog amps and can be made really small and lightweight.
A fairly large amount of power is radiated as heat should you get a set of low-efficiency wireless loudspeakers. This may contribute to several problems: Cordless loudspeakers with lower efficiency will squander some energy. It's best to be aware of the added power cost while choosing between a high- and low-efficiency product. The wasted energy is dissipated by the cordless speakers as heat. Heat doesn't radiate well through tiny surfaces. For this reason low-efficiency cordless speakers must use heat sinks. These heat sinks use up a reasonable amount of space and make the wireless loudspeakers bulky and heavy. Further more, they raise the price of the cordless loudspeakers. Low-efficiency wireless speakers further require a good amount of circulation around the cordless speakers. Consequently they cannot be put in close spaces or inside air-tight enclosures.
Given that low-efficiency wireless loudspeakers will produce just a small fraction of the power consumed by the amp as usable audio energy, the amplifier requires a larger power supply than high-efficiency products resulting in higher cost. Further, because of the large level of heat, there will be much higher thermal stress on the electrical components and also interior materials which may cause reliability issues. On the other hand, high-efficiency wireless speakers can be made small and light. You should search for the efficiency value whilst on the lookout for a set of cordless loudspeakers. The best place to check is the cordless speakers data sheet. Efficiency is normally displayed in percent. Analog Class-D amplifiers offer a power efficiency of roughly 25% while switching-mode amps provide close to 98%. The larger the efficiency value, the less the level of energy squandered as heat. A 100-Watt amplifier with a 50% efficiency would have an energy usage of 200 W.
You need to look for the efficiency figure whilst on the lookout for a set of wireless loudspeakers. The best spot to look is the wireless loudspeakers data sheet. Efficiency is commonly shown in percent. Analog Class-D amplifiers offer a efficiency of close to 25% while switching-mode amps provide as much as 98%. The larger the efficiency figure, the less the level of power squandered as heat. A 100-Watt amplifier with a 50% efficiency would have a power usage of 200 W.
The measurement setup of amplifier efficiency employs a power resistor which is connected to the amp. The amp is being fed a constant-envelope sine-wave tone. Then the energy used by the resistor is tested and divided by the power the amp uses. Usually a complete power report is plotted in order to display the dependency of the efficiency on the output power. This is why the output power is swept through different values. The efficiency at every value is calculated plus a power efficiency plot generated.
Wireless loudspeakers that use switching-mode amps contain a switching stage that leads to a certain amount of non-linear behavior. Thus cordless speakers that use Class-D amplifiers usually offer smaller music fidelity than types utilizing analog Class-A amps. Due to this fact you will need to base your decision on whether you need small dimensions and low energy usage or greatest music fidelity. Nonetheless, the latest wireless speakers that use switching-mode audio amplifiers, just like Class-T amps, provide audio fidelity that comes close to that of low-efficiency analog amps and can be made really small and lightweight.
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