The so-called audio PK (comparison test) does not necessarily reduce the cost of purchase for the investor, and even if the method is not correct, it may not always be able to choose the best product! For example, some venues have notified all audio companies to move the audio. Each company has a public PK. The choice seems to be much, but in fact, after a few games, the end result is “a lot of confusionâ€. Lost in the direction. Audio is an art product that plays music, and people's own evaluation and preference for music art is very subjective. Sometimes the same song is played in the same environment with the same set of sound, but because of people's state of mind and physical condition, listening I feel that the effect will be completely different. Moreover, the size and shape of each room and the different decorative materials will change the sound quality (the "sound field" in the terminology), so this PK method itself has high requirements for the "reviewers", but those with professional The “reviewers†​​of knowledge and technology also have a subtle relationship with some audio companies (interests!). It can be imagined that the "review" result of this audio PK is not necessarily fair, and the comparability is even worse. There are many ways to really pick out a good sound, but one is relatively simple and most effective, that is the real "hard PK", the specific method is as follows: In the same venue, use the same source, the same track, and the same amplifier to instantly switch the comparison to compare the power, tone quality and sensitivity of the PK speaker. The same speaker uses the same source, the same track, and two amplifiers to instantly switch the comparison to compare the power and tone of the PK amplifier. Compare the PK microphone with the same amplifier in the same amplifier. The same microphone compares the reverb effect and function of the PK amplifier or the front stage. Only this kind of hard PK is the most time-saving and directly effective, because the audio equipment is good and bad, you can decide to win or lose by instant switching. If you can't do it, you can move it away immediately. You can always go PK, which equipment can win. Several of them can be selected for the final price negotiation (of course, if you only want to find the best equipment, it is another matter). The sound and the difference of the sound can be measured from the following indicators: 1. The higher the sensitivity of the speaker, the better the theory. The sensitivity is known by the same power amplifier switching contrast; the high sensitivity has a certain sound, and the low sensitivity has a small sound. 2. The power is larger than the power is small. Powerful speakers can withstand a lot of power, even if they are loud, they are not distorted and not easy to burn out, while low-power speakers are the opposite. 3, K room speakers sing easily and not screaming (commonly known as "flying microphone"), Hi room speakers loudly shocked but clear and soft is not harsh, but vice versa (not mentioning the sound quality here, because the sound quality, timbre is good What is bad, often benevolent sees benevolence, wise sees wisdom). 4. The speaker with high sensitivity and high power must theoretically have higher cost than the speaker with low sensitivity and low power, and the equipment value and artistic value are also high. 5, power amplifiers in theory, the cost is higher than the power of the power amplifier is high, the use value is also high, because the high-power amplifier push speaker sound is good, and not easy to break, but the low-power amplifier is the opposite. The power of the power amplifier is large, and the sound is small. 6, the microphone vocals are clear, true and "into the microphone" (singing easy) as well. If it is a wireless microphone, the cost of the U segment is higher than that of the V segment, and the more the adjustable frequency point, the higher the cost, and the anti-fall and anti-shock is better than the anti-fall. Summary: Through the above measures, you can basically choose the right speaker. Pet Flexible Solar Panel,Most Efficient Solar Panels,Foldable Solar Panel,Polycrystalline Solar Panel Shengtian New Energy (Shenzhen) Co., Ltd. , https://www.stenergysolar.com