Introduction of speaker cable types
HIFI speakers are used to restore the recording sound field with high fidelity, and the lossless transmission of audio signals should be guaranteed enough. Generally, transmission lines have different impedances for signals with different frequencies, and this impedance is characterized by unclear sound during sound reproduction. Therefore, people have produced an advanced speaker connection line called intelligent signal line. The characteristic of this line is to divide the signal into two channels according to the frequency. The outer wire with a certain thickness passes the signal above 5KHZ, and the signal below 5KHZ is transmitted through the inner wire, which greatly improves the frequency characteristics of the transmission line and makes the reproduced sound clear and transparent. However, the price is very expensive. Most of the brand audio cables mentioned above also produce heating speaker cables.
Loudspeaker purchase strategy
First of all, a preliminary understanding of the speaker before the audition
A preliminary understanding of a pair of speakers can be identified by observing, weighing, knocking and identifying steps: observing technology, weighing, knocking on the box and identifying the nameplate.
Appearance technology is to judge the quality of a box from the first impression of its appearance: boxes made of natural logs are of course the best. Many world-famous extreme boxes, including Italy's Chario and guarnerikozation, will never be as popular as everywhere soft shampoo due to environmental protection, lack of resources, long processing time and other factors, and the price will certainly not be low. Therefore, the common speakers are decorated with a thin layer of wood veneer on the surface of MDF medium density fiberboard: solid wood veneer, beautifully decorated speakers, especially rare wood veneers such as rosewood, sparrow eye, pear wood, walnut, Zhennan and red oak, which have excellent natural wood grain visual effect and smooth and comfortable feel. Especially those pianos polished with symmetrical butterfly pattern solid wood skin after multi-layer coating can be regarded as high-end boutique speakers, and there are very few counterfeit products. Boxes covered with PVC plastic belong to daily necessities. Although the workmanship is fine, it can only be regarded as low-grade goods at best. However, although the box decorated with this kind of paper veneer looks extreme, it is more important to pay attention to whether the sewing behind the box and the digging process of the horn installation position are accurate. Fake and shoddy products generally don't pay attention to these details, and they can be judged correctly with a little care.
In fact, even on hi-fi, we can hardly see the real log box. Because the wood that can meet the requirements of manufacturing speakers is extremely scarce, for example, the wood used by Chario in many top products is the top Italian red oak that has grown for more than 40 years. According to the Italian environmental protection law, the buyer must replant 10 similar saplings in addition to paying the wood price for each such tree species cut down.
Second, the weight: most good speakers use 18 ~ 25mm high-quality MDF particle boards, while high-end flagship speakers use overweight solid wood such as mahogany and yellow pomelo or multi-layer composite plywood, so the weight is amazing. Usually, the net weight of a pair of speakers reaches 50 or 60 kilograms. Most middle and low-grade customers eat soft particleboard, while fake and inferior products use inferior paper rubber board, so the weight is generally light. In the audio industry, it is often said that experts look at quality and laymen weigh the weight. The subwoofer is definitely better than the subwoofer. However, it is necessary to be wary of unscrupulous merchants pouring sand and cement at the bottom of the sound body to gain weight and deceive consumers.
Here, we should pay attention to some wooden speaker products with arc box design. Although curved boxes are attractive in appearance, which is beneficial to acoustic design, due to the need of processing technology, the firmness of wood used in these boxes is often not as good as that of products with pure square structure. It's a bit of a dilemma
3. Knock on the box: knock on the front and rear baffles of the box with knuckles, and the four sides of the box will be heavy and slightly brittle. It feels that the plate is hard and thick, supported by many reinforcing ribs inside, the box structure is reasonable and firm, and various sound insulation and standing wave prevention measures are adopted. This kind of box has high processing cost and great difficulty, and there are few fake and shoddy products. If you knock on the box with your knuckles and it sounds empty, it means that the plate is too thin, the material is too poor and the structure is unreasonable. And there is no sound absorption material or reinforcement inside, which leads to a large number of diffuse reflection and standing waves in the box. You will never get a good playback effect if you buy this kind of speaker.
Fourth, it is to recognize the nameplate: really good speakers have well-made gold-plated or chrome-plated nameplate signs, and the nameplate is generally engraved with distinctive trademarks, companies, names, places of origin and corresponding indicators. Imported boxes are in English, such as Madeinxxx or Manufacture, corresponding trademarks, speaker indicators, etc. If there is only Designin(XX design) or only a country name is vaguely marked, even except for a few simple and extremely imprecise basic indicators, neither the place of origin nor the manufacturer can be seen, and the trademark has no registration mark. Most of these three products are suspected of counterfeiting. Brand-name speakers attach great importance to brand image and corporate visibility, so the attached nameplate logo is very standardized and exquisite, with all indicators, corporate names and places of origin available. Some nameplates are even thin metal plated with 24K real gold, and the fonts on them are still uneven. The product not only has the date of manufacture and production serial number, but also has the matching serial number and the ID card attached to the packaging box. For this kind of speakers, as long as the price is reasonable, you can generally choose with confidence.
After reading this article about the introduction of speaker lines and the strategy of speaker purchase, do you have a certain understanding of speaker lines? I hope it helps you.