If you are ready to get yourself brand-new wireless speakers, you may be pondering how efficiently your cordless loudspeakers perform. I’ll clarify just what the phrase “power efficiency” stands for and also why you should take a closer look at this figure during your selection of brand new wireless loudspeakers.
Numerous issues are brought on by cordless loudspeakers which have low power efficiency: A great deal of wasted power obviously implies higher running cost which means that a more expensive set of wireless loudspeakers can in fact in the long run end up being less expensive compared to a less costly product which has lower efficiency. Lower efficiency cordless speakers are going to dissipate a lot of energy as heat. To protect the circuit elements, low-efficiency cordless loudspeakers need to find ways to get rid of the heat which is produced. Usually more elements have to be added in order to dissipate adequate power and preserve the optimum running temperature. These components usually are heat sinks and fans. Heat sinks and fans need room and are expensive. The cordless speakers hence is going to get rather big and pricey. In addition heat fans will generate running noise. Low-efficiency wireless speakers further need a good amount of circulation around the cordless loudspeakers. As a result they cannot be placed in close spaces or inside air-tight enclosures.
Wireless speakers that have low efficiency have to have a bigger power supply to create the same level of audio power as high-efficiency versions. In addition, due to the large level of heat, there is going to be considerably greater thermal stress on the electrical elements and interior materials which may result in dependability issues. In comparison, high-efficiency cordless speakers can be made small and light.
Take note, however, that efficiency is dependent upon how much energy the amplifier provides at a given moment. Amplifiers have higher efficiency when delivering higher output power than when running at small power because of the fixed power that they use up irrespective of the output power. The efficiency value in the amp data sheet is typically given for the greatest amplifier output power.
The measurement setup of amp power efficiency makes use of a power resistor that is connected to the amplifier. The amp itself is being fed a constant-envelope sine-wave tone. Then the power absorbed by the resistor is measured and divided by the power the amp uses. To get a complete efficiency profile, the audio power of the amplifier is swept between several values. At each value the efficiency is measured and then plotted onto a graph.
Wireless loudspeakers that use switching-mode amps have a switching stage which leads to a certain amount of non-linear behavior. Therefore cordless speakers that use Class-D amps ordinarily offer lower music fidelity than models using analog Class-A amps. Therefore you will have to base your buying decision on whether you require small dimensions and minimal energy usage or maximum audio fidelity. On the other hand, the latest wireless speakers that use switching-mode audio amps, such as Class-T amplifiers, offer audio fidelity that comes close to that of low-efficiency analog amplifiers and can be produced ultra small and lightweight.
Numerous issues are brought on by cordless loudspeakers which have low power efficiency: A great deal of wasted power obviously implies higher running cost which means that a more expensive set of wireless loudspeakers can in fact in the long run end up being less expensive compared to a less costly product which has lower efficiency. Lower efficiency cordless speakers are going to dissipate a lot of energy as heat. To protect the circuit elements, low-efficiency cordless loudspeakers need to find ways to get rid of the heat which is produced. Usually more elements have to be added in order to dissipate adequate power and preserve the optimum running temperature. These components usually are heat sinks and fans. Heat sinks and fans need room and are expensive. The cordless speakers hence is going to get rather big and pricey. In addition heat fans will generate running noise. Low-efficiency wireless speakers further need a good amount of circulation around the cordless loudspeakers. As a result they cannot be placed in close spaces or inside air-tight enclosures.
Wireless speakers that have low efficiency have to have a bigger power supply to create the same level of audio power as high-efficiency versions. In addition, due to the large level of heat, there is going to be considerably greater thermal stress on the electrical elements and interior materials which may result in dependability issues. In comparison, high-efficiency cordless speakers can be made small and light.
Take note, however, that efficiency is dependent upon how much energy the amplifier provides at a given moment. Amplifiers have higher efficiency when delivering higher output power than when running at small power because of the fixed power that they use up irrespective of the output power. The efficiency value in the amp data sheet is typically given for the greatest amplifier output power.
The measurement setup of amp power efficiency makes use of a power resistor that is connected to the amplifier. The amp itself is being fed a constant-envelope sine-wave tone. Then the power absorbed by the resistor is measured and divided by the power the amp uses. To get a complete efficiency profile, the audio power of the amplifier is swept between several values. At each value the efficiency is measured and then plotted onto a graph.
Wireless loudspeakers that use switching-mode amps have a switching stage which leads to a certain amount of non-linear behavior. Therefore cordless speakers that use Class-D amps ordinarily offer lower music fidelity than models using analog Class-A amps. Therefore you will have to base your buying decision on whether you require small dimensions and minimal energy usage or maximum audio fidelity. On the other hand, the latest wireless speakers that use switching-mode audio amps, such as Class-T amplifiers, offer audio fidelity that comes close to that of low-efficiency analog amplifiers and can be produced ultra small and lightweight.
About the Author:
check it out in order to come across further information about cordless stereo speakers .
#end
Purchasing A Set Of Efficient Wireless Speakers Purchasing A Set Of Efficient Wireless Speakers
Article Source: http://magazine-articles.tumblr.com/post/71835500236
0 comments:
Post a Comment