When you are ready to buy brand-new wireless speakers, you may well be pondering how efficiently your wireless loudspeakers operate. Let me make clear precisely what the term "power efficiency" means plus why you ought to take a closer look at this number in your selection of brand new cordless loudspeakers.
A relatively large amount of energy is dissipated as heat should you get a set of low-efficiency wireless speakers. This may contribute to a few problems: A lot of squandered energy obviously means larger running cost which means that a more pricey pair of cordless speakers might actually in the long term be less expensive compared to a less costly type which has lower efficiency. Lower efficiency wireless speakers are going to radiate a whole lot of energy as heat. Heat will not dissipate well through small surfaces. Thus low-efficiency wireless loudspeakers must use heat sinks. Heat sinks and fans demand room and are expensive. The cordless speakers therefore will become rather big and pricey. Also heat fans will create running noise. In order to help radiate heat, low-power-efficiency amps will need sufficient air movement. Consequently they can not be placed in places with no circulation. Furthermore, they cannot be mounted inside water-proof enclosures.
Cordless loudspeakers that have low efficiency have to have a bigger power supply to output the same amount of audio power as high-efficiency versions. In addition, due to the large level of heat, there will be significantly greater thermal stress on the electric elements as well as internal materials which may result in reliability issues. In comparison, high-efficiency wireless speakers can be produced small and lightweight.
Yet, there are several things to note regarding power efficiency. First of all, this figure depends on the level of power that the amplifier is delivering. Each music amp is going to use up a certain level of power regardless of whether or not it supplies any power to the loudspeaker. Because of this the lower the energy the amp delivers, the lower the power efficiency. Because of this audio makers normally specify the efficiency for the highest audio power that the amplifier can deliver.
What is less well-known about efficiency is the fact that this figure is not fixed. Actually it varies depending on how much energy the amp delivers. Thus occasionally you'll find efficiency values for several power levels in the data sheet. Every music amp is going to consume a specific level of energy regardless of whether or not it supplies any power to the speaker. For that reason the lower the energy the amp provides, the lower the efficiency. Because of this audio producers generally specify the efficiency for the highest audio power that the amp can supply. To figure out the efficiency, the audio power that is consumed by a power resistor that is connected to the amp is divided by the total power the amplifier uses while being fed a constant sine wave signal. Normally a full power profile is plotted to display the dependence of the efficiency on the output power. Because of this the output power is swept through various values. The power efficiency at each value is measured plus a efficiency graph generated.
While selecting a set of wireless speakers you will have to weigh efficiency versus fidelity given that cordless loudspeakers which utilize low-efficiency analog amplifiers often offer the maximum music fidelity whilst digital types are going to have larger distortion. Then again, digital amps have come a long way and are offering better music fidelity than in the past. Cordless speakers which make use of Class-T amplifiers come close to the music fidelity of models that have analog amps. Due to this fact selecting a set of cordless speakers which use switching amplifier with great audio fidelity is now feasible.
A relatively large amount of energy is dissipated as heat should you get a set of low-efficiency wireless speakers. This may contribute to a few problems: A lot of squandered energy obviously means larger running cost which means that a more pricey pair of cordless speakers might actually in the long term be less expensive compared to a less costly type which has lower efficiency. Lower efficiency wireless speakers are going to radiate a whole lot of energy as heat. Heat will not dissipate well through small surfaces. Thus low-efficiency wireless loudspeakers must use heat sinks. Heat sinks and fans demand room and are expensive. The cordless speakers therefore will become rather big and pricey. Also heat fans will create running noise. In order to help radiate heat, low-power-efficiency amps will need sufficient air movement. Consequently they can not be placed in places with no circulation. Furthermore, they cannot be mounted inside water-proof enclosures.
Cordless loudspeakers that have low efficiency have to have a bigger power supply to output the same amount of audio power as high-efficiency versions. In addition, due to the large level of heat, there will be significantly greater thermal stress on the electric elements as well as internal materials which may result in reliability issues. In comparison, high-efficiency wireless speakers can be produced small and lightweight.
Yet, there are several things to note regarding power efficiency. First of all, this figure depends on the level of power that the amplifier is delivering. Each music amp is going to use up a certain level of power regardless of whether or not it supplies any power to the loudspeaker. Because of this the lower the energy the amp delivers, the lower the power efficiency. Because of this audio makers normally specify the efficiency for the highest audio power that the amplifier can deliver.
What is less well-known about efficiency is the fact that this figure is not fixed. Actually it varies depending on how much energy the amp delivers. Thus occasionally you'll find efficiency values for several power levels in the data sheet. Every music amp is going to consume a specific level of energy regardless of whether or not it supplies any power to the speaker. For that reason the lower the energy the amp provides, the lower the efficiency. Because of this audio producers generally specify the efficiency for the highest audio power that the amp can supply. To figure out the efficiency, the audio power that is consumed by a power resistor that is connected to the amp is divided by the total power the amplifier uses while being fed a constant sine wave signal. Normally a full power profile is plotted to display the dependence of the efficiency on the output power. Because of this the output power is swept through various values. The power efficiency at each value is measured plus a efficiency graph generated.
While selecting a set of wireless speakers you will have to weigh efficiency versus fidelity given that cordless loudspeakers which utilize low-efficiency analog amplifiers often offer the maximum music fidelity whilst digital types are going to have larger distortion. Then again, digital amps have come a long way and are offering better music fidelity than in the past. Cordless speakers which make use of Class-T amplifiers come close to the music fidelity of models that have analog amps. Due to this fact selecting a set of cordless speakers which use switching amplifier with great audio fidelity is now feasible.