Wireless speaker vendors usually release the frequency response of their solutions that, however, doesn't automatically explain to you a great deal concerning the sound quality. To help you make a wiser purchasing decision, I'll clarify what this spec means and how to interpret it. This ideally is going to ensure you will get the best wireless loudspeakers for your task. Wireless speakers are meant to transmit and the reproduce a music signal to medium or high volume level. Makers usually present the frequency range over which the wireless loudspeakers work. This range is specified by listing two frequencies: a lower and upper frequency. For instance, the lower frequency could be 20 Hz and the upper frequency 20 kHz. From this spec it seems like the wireless speakers can operate as a set of HIFI speakers. It might seem the larger the frequency response the better the cordless loudspeakers. That, however, will not always be. You need to evaluate the specifications more meticulously to correctly understand them.
A large frequency response does not necessarily mean the wireless speakers provide good audio quality. As an example a set of wireless speakers which has a frequency response between 30 Hz and 15 kHz might sound much better than another set with a response between 10 Hz and 30 kHz. Also, each maker, it appears, uses a different way of specifying the lowest and highest frequency of their wireless loudspeakers. The most popular method is to describe the frequency response as the frequency range within which the wireless loudspeakers have rather constant sound pressure level having a greatest decrease of 3 decibel (dB). Ordinarily the drop in sound pressure level is greatest at the upper and lower frequency.
It seems there are lots of ways which companies employ whilst specifying the frequency response. The conventional convention is to present the frequency range inside of which the sound pressure level of the loudspeakers will drop at most 3 dB from the nominal level.
The circumstances under which the frequency response was determined may also be crucial to understand. One condition that may impact the frequency response is the impedance of the speaker driver built into the cordless loudspeakers. Standard speaker driver impedances vary from 2 to 16 Ohms. The lower the loudspeaker driver impedance the greater the burden for the internal amp.
This change is most obvious with many wireless speakers that use digital amplifiers, also referred to as Class-D amplifiers. Class-D amps use a lowpass filter in their output in order to suppress the switching components which are produced from the internal power FETs. A changing loudspeaker driver load is going to affect the filter response to some amount. Usually the lower the loudspeaker driver impedance the lower the maximum frequency of the built-in amp. Moreover, the linearity of the amplifier gain will depend on the driver load.
A few of the newest digital amps feed back the music signal after the lowpass filter in order to compensate for this drawback and also to make the frequency response of the amplifier independent of the attached driver load. Then again, if the amp is not constructed well, this kind of feedback could potentially cause instability and also lead to loud noise being created by the amplifier if particular loudspeakers are connected. Other amps utilize transformers and offer outputs for several speaker loads. Aside from improving the frequency response of the amplifier, this technique usually also enhances the amplifier efficiency.
A large frequency response does not necessarily mean the wireless speakers provide good audio quality. As an example a set of wireless speakers which has a frequency response between 30 Hz and 15 kHz might sound much better than another set with a response between 10 Hz and 30 kHz. Also, each maker, it appears, uses a different way of specifying the lowest and highest frequency of their wireless loudspeakers. The most popular method is to describe the frequency response as the frequency range within which the wireless loudspeakers have rather constant sound pressure level having a greatest decrease of 3 decibel (dB). Ordinarily the drop in sound pressure level is greatest at the upper and lower frequency.
It seems there are lots of ways which companies employ whilst specifying the frequency response. The conventional convention is to present the frequency range inside of which the sound pressure level of the loudspeakers will drop at most 3 dB from the nominal level.
The circumstances under which the frequency response was determined may also be crucial to understand. One condition that may impact the frequency response is the impedance of the speaker driver built into the cordless loudspeakers. Standard speaker driver impedances vary from 2 to 16 Ohms. The lower the loudspeaker driver impedance the greater the burden for the internal amp.
This change is most obvious with many wireless speakers that use digital amplifiers, also referred to as Class-D amplifiers. Class-D amps use a lowpass filter in their output in order to suppress the switching components which are produced from the internal power FETs. A changing loudspeaker driver load is going to affect the filter response to some amount. Usually the lower the loudspeaker driver impedance the lower the maximum frequency of the built-in amp. Moreover, the linearity of the amplifier gain will depend on the driver load.
A few of the newest digital amps feed back the music signal after the lowpass filter in order to compensate for this drawback and also to make the frequency response of the amplifier independent of the attached driver load. Then again, if the amp is not constructed well, this kind of feedback could potentially cause instability and also lead to loud noise being created by the amplifier if particular loudspeakers are connected. Other amps utilize transformers and offer outputs for several speaker loads. Aside from improving the frequency response of the amplifier, this technique usually also enhances the amplifier efficiency.
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