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How To Figture Out The Bluetooth Speakers' quality
- Nov 12, 2018 -

How To Figture Out The Bluetooth Speakers' quality

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Nowadays, the development of the speakers is not good, and the speakers are the ones that are closest to people's lives. Choosing a good speaker can bring you beautiful enjoyment. If you choose a bad speaker, it will increase your ear. noise. This article is shared by professionals to teach you how to distinguish the advantages and disadvantages of the speaker, take a look!

In the entire audio (including computer multimedia speakers) system, the speaker as a replay tool for the sound system, it is the simplest, but the most complex equipment. Because it is responsible for the electro-acoustic conversion equipment, the playback effect is directly related to the quality of the entire system, so whether the speaker selection is appropriate is an important factor in determining whether a sound system can be matched and formed successfully. To determine the pros and cons of a pair of speakers, usually from the technical indicators and people's subjective listening and evaluation of the two aspects, the author at the intermediate level of this brief introduction, for the majority of friends in the formation of their own sound system reference.


The International Electrotechnical Commission (IEC) has set a minimum standard for household Hi-Fi speakers. The standard file is coded as IEC-581-7. We only need to look at the specifications of the speaker to see if its technical parameters reach this point. The minimum standard can be more objective to determine whether the speaker is qualified. Some minimum standards for IEC-581-7 for home Hi-Fi speakers are:

(1) Frequency characteristics: the deviation is within +4~8dB at 50Hz-12500Hz; the deviation is ≤±4dB in the frequency band of 100Hz~8kHz

(2) Pointing characteristics: horizontal plane ±30?o, vertical plane ±10?o, frequency response curve deviation from positive axis ≤±4dB

(3) Inconsistency of left and right channel speakers: the difference between the average sound pressure in the range of 250 Hz to 1 kHz ≥ 2 dB0 K" I$ U8 z+ _. R8 t9 q# u

(4) Total harmonic distortion: ≤ 2% at 250 Hz to 1 kHz, ≤ 1% - 2% at 1 Hz to 2 kHz, ≤ 1% 7 at 2 kHz to 6.3 kHz S: \: S6 {) y% L # _8 T# N* h; z5 i( L

(5) Impedance: in the range of 20 Hz to 20 kHz, ≥ 80% of rated impedance T' F: t" L' w s. ^ Z6 L

(6) Allowable power: ≥10W

From the above standards, it is not difficult to see that the technical requirements of IEC Hi-Fi (high-fidelity) speakers are not very high, and the speakers produced by regular manufacturers on the market can basically meet or exceed these standards. So in this many qualified products, how to determine whether a pair of speakers is excellent from the technical indicators? Does the author think that the speaker is excellent? The author believes that the speaker is mainly to look at the frequency response range, pointing characteristics, sensitivity, withstand power and impedance.

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Also pay attention to the top 10 tips for choosing a speaker:: }: Y* W, } C- U) z

1. the tone is naturally balanced

2. the sound characteristics

3. acoustic dyeing

4. the speaker's sound environment; R' V3 v4 s: g) c k$ l R- d

5. Listen to familiar music ' X. ^7 s4 ~1 D: v% u% I

6. pay attention to coordination and matching

7. should be heavy and not weight; }# {) P2 E' _# C1 J- t) [% X

8. no hurry and would rather spend more time; E4 B+ X" w0 h( K* r) ~" s, s1 E5 b

9. compare at the same volume

10. only buy it when you are obsessed with 


The frequency response range refers to the range in which the speaker can replay the sound frequency band, which is generally expressed in Hz to kHz. Since the limits of the human ear to frequency audibility are 20 Hz to 20 kHz, as the age increases, the hearing of the human ear will drop to about 25 Hz to 16 kHz. Therefore, as a pair of excellent speakers, the frequency response range must of course reach or exceed this range.


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