Weak current College】 【speaker buying tips.

<br> <br> Listen to the speaker of the preliminary understanding <br> <br> For an initial understanding of the speakers, view available ", OK, knocked, identified" steps to a concept, namely, the identification process, just .weights, 3 2 knock box, four admitted nameplate. <br> <br> A view of technology from speaker appearance, like to judge the merits of that and quality: natural timber Seiko build speakers, of course, the best, many millions of .the world famous extreme speakers, including Italy's Chario (zhuoli), GuarneriHomage (Stradivarius Chao had owned), etc., but such a good case for environmental protection, resource-poor processing of difficult, long and other factors, will never be universal as .the ubiquitous "floating flexible" shampoo, certainly not low prices. It is common for speakers are MDF mdf surface dressing with a thin layer of veneer for decoration: compress really Flake Seiko exterior speaker, especially if the item, queyan, pear, walnut, .Zhen nan, red oak, and other rare veneers, its natural wood grain visual effect is extremely well, feel greasy and comfortable. Especially to symmetric Butterfly pattern really is sputtered multi-layer veneers with polished piano lacquer, most of them can be regarded as .a middle-high-quality speaker, phishing pinji. PVC (Billy sands) plastic foil Leather Suitcase is a staple, best workmanship, Zhong didang goods can only be counted. But to the grain veneer decorated box although it looks extremely should pay more attention .to the box behind the veneer of joint and the loudspeaker installed bit accurate digging ligation process is in place. Fake and shoddy products generally does not pay attention to these details, thus slightly hard to correct judgement. <br> <br> The second is .OK weight: good speaker mostly with 18 «25 high quality MDF particle board building, Luxury flagship speaker is to mahogany, teak, overweight solid wood or multilayer plywood to make, so the weight is very alarming. Often a pair of speakers is up to .50 kilograms net. Most of the Middle staple texture soft Particleboard, phishing fake and shoddy products more adoption of poor paper glue Board, it is generally lighter in weight. Audio sector often have "insiders look at quality, outsiders" weight "that heavy speakers .certainly than light speaker. But beware of bad businesses on the bottom of the filling gravel yinti cement weight gain to deceive consumers. <br> <br> Third, knock box body: means a section of percussion box above and below the rear baffle, .Cabinet issued all sides and slightly crisp Yuen, feel the texture of hard thick sheet metal, there are a number of root rib support, case reasonable structure, strong, there are many noise, and anti-standing wave effect of measures, etc. This .type of machining costs high, difficult, and few of fake and shoddy products. If a section of percussion box "putt-putt" empty, and the description of the material too thin, material quality is too low, the structure is reasonable. And .there is no absorption material or reinforced sustain, resulting in a large number in the case of diffuse reflection and formation in wave. Buy this speaker, absolutely impossible to get good results of the replay. <br> <br> Fourth, the admission nameplate .: really good speaker has a fast well-made gold or chromium-plated nameplate marking, nameplate on generally have inscribed distinctive trademarks, company, name, place of production, appropriate indicators. Import box is available in English as: Madeinxxx or Manufacture and corresponding .trademarks, speaker indicators, etc. If only Designin ... (XX design) or indefinite subject only to a country name, even apart from the simple and very loose a few basic indicators is no origin, also see manufacturers, trade marks or registration .marks. These three products most have phishing and fake. Famous speakers attaches great importance to brand image and corporate reputation, thus marking affixed nameplate is very standardized, exquisite, indicators and business name, place of origin. The nameplate or even with thin metal carat .gold, top fonts are still bump. Products not only have the date of manufacture, production, serial number, or even paired box with a serial number and ID card. For this type of speaker, as long as the price is reasonable, and generally .can rest assured that use. <br> <br> From specification to determine speakers and disadvantages of <br> <br> As mentioned above, the finished loudspeaker behind generally affixed with a piece of technology means label: content no speaker frequency range, .sensitivity, power and impedance-hosted. Which sensitive rate is the most important indicator of the speaker, largely determine what thereof should be optional, and requires more power amplifier power to push, and so on. Listen to the majority view of the sensitivity of .the sound-level home in 86-92dB between, on the same amplifier, at equal volume (as volume Rotary to 10 o'clock), the higher the sensitivity means that the larger the sound on sound amplifier power requests and requirements are lower. .This is what they say: the push for better sound. Many commercial office with professional OK sound sensitivity is more than 100dB, no wonder many people feel to OK Hall to sing karaoke sound very pretty, and effortless to get a lot of volume. But .you mustn't think that sensitivity the better, in fact, sensitivity over the loudspeaker 92dB are vibrating Bowl compare light, thin metal pots, PP basin and the like, will cause the power to control horn control damage, resulting in the sound quality is .pretty thin, bias, bias exaggeration, partial sturdy and less numerous music details and charm. Not suitable for HI-FI Kam hearing. While many sound thick soft and full of musical taste of the famous speakers usually sensitivity are relatively low, as in the .United Kingdom, ponsardin, ATC, Italy Stradivarius Chao had owned, such as top-level speakers zhuoli sensitivity 82dB only. These speakers are often extremely difficult to serve the needs of output current great giant power amplifier before allowing their work in ideal linear region, .price will not be small. <br> <br> Another important indicator is the frequency range. For example, home-made products, the new Dirk compass box frequency range shelf is 60Hz ~ 20KHz ± 2.5dB, 60Hz said speakers at a low .frequency direction stretch values. This figure is lower, the speaker of the better low-frequency response: 20KHz indicates that the speaker of the high-frequency extension. The higher the number, indicating that the audio characteristics for the better. The suffix indicates the .± 2.5dB which frequency range of distortion size, the smaller the distortion factor, the frequency response curve is relatively flat. Some speakers callout distortion is ± 3dB, its frequencyScope should be wider. Some speakers do not indicate that the index, the frequency extension .will become very wide. For example, the compass, box if you do not specify distortion control in positive and negative 2.5 DB range, frequency range can be marked as 40Hz ~ 23KHz. It should be noted that no distortion of the frequency range is meaningless .. If manufacturers are unmarked, can only be bad for their motive, intention to deceive consumers, but also covered the speaker indicators do not regulate, manufacturers on a lack of confidence in their own products, it is difficult to make people at ease. < .br> <br> Host power is the sound of a reference index, how much tile to indicate that the index does not demonstrate sound quality is good or bad, just provide for matching power amplifier: for instance a reference to the speaker's hosting power labeled .10 ~ 200W, namely that in order to promote the speakers required power amplifier or at least to have the output power of 10W above, jiyong is greater than the Amplifier 200W above for full power output. Otherwise there might be a firing Chamber of the concern .. In General, home speakers will never have it stops of concern, only good push, push pushing good or bad, 200 Watts the following hosts the power of a use is significantly more to aim too high. <br> <br> Another indicator .is the speaker impedance value, typically 8 Ω to its nominal value, the vast majority of second frequency bookcase box of impedance values are 8 Ω, the multi unit multi frequency also has 6 standing speakers, 4 Ω Ω. The lower the impedance values, .to promote the greater of-current, the power amplifier power required is correspondingly higher. In my opinion, the best home speakers selected 8 Ω impedance of more good distribution amplifier. <br>.