Do you often see videos of concert scenes and get shocked by those stage backgrounds that are so dazzling? Or when attending the company's annual meeting, staring at the ultra-high-definition large screen on the stage, I couldn't help but think: How to choose this thing? Today we will talk about something real and give some tips to the newbie who has just entered the industry.

1. Understanding demand is more important than bargaining

Many people come up and ask "How much does the LED screen cost per square meter", which is as unreliable as going to the vegetable market to ask "How much does the pork cost". ​ ​Think about three questions first​​：

1. ​​Where to use​​——A small indoor theater or an open-air music festival? You have to withstand heavy rains and sunshine outdoors, and you have to consider the distance and perspective of the audience indoors.
2. ​​How long does it take​​——Short-term activities are more cost-effective to rent, long-term fixed installation requires money to buy a durable one
3. ​​What are the tricks to play​​——Want to be able to rotate with the light lifting? Or just as a background board?

To give a negative example: a theater in a county spent 300,000 yuan to buy a screen, but it turned out that it could not play 4K materials, and now it is PPT every day. So,​ ​Don't just look at the price tag, function adaptation is really saving money​​。

2. The technical parameters

When visiting the manufacturer's official website, you are easily frightened by various professional terms. Let's focus on four indicators:

​​brightness​​: Indoor 800-1200 nits just right, the open-air venue has to reach more than 4000 nits, so it won't turn into a blackboard under the sun at noon”
​​Refresh rate​​: Starting at 1920Hz, otherwise it will be full of scan lines when shooting, and Douyin will directly overturn the traffic.
​​Protection level​​: IP65 is the basics, it can prevent water and dust, a must-have for the beach music festival
​​Grayscale​​: Go up 16bit, so the dark scene will not be blurred

There is a pit here to be aware of! Some merchants will regard laboratory data as a selling point, and the actual results will be 30% off. ​ ​You must check the third-party test report​​, ISO9001 and CE certifications are equivalent to the "death-free gold medal" of product quality.

3. How to choose rental vs. purchase

Teams who have just entered the industry are prone to fall apart. Let’s take a comparison table to understand:

It is recommended that teams with performance frequency less than twice a month rent it first, and then consider purchasing it yourself when the order is stable. Many manufacturers nowadays​ ​Rent instead of purchasing​​Model: If you rent it for 12 months, you can get the machine purchase price. If you want to get it, you have to get it.

4. Avoiding pits: Must-read for beginners

Recently, I found something weird when I helped my friend inspect the LED screen - a manufacturer sold the second-hand mobile phone refurbishment as a new product, and the color difference was so big that it looked like a mosaic. Here are some tricks to prevent fraud:

1. ​​Touch the border​​: True all-aluminum magnesium zinc alloy box, with smoother edges and corners than mobile phone cases, and will not cut hands
2. ​​Look at the seams​​: The spliced screen stands 3 meters away, and there should be no light and dark stripes visible
3. ​​Test the afterimage​​: Quickly slide the text material, and direct pass with more than 0.5 seconds

There is another cold knowledge:​​24-hour technical response​​Not a decoration. The main screen was black two hours before the opening of a music festival last month. Reliable manufacturers directly rewrite the control program remotely, which is much more reliable than waiting for engineers to fly over.

5. The trick hidden in the contract

Don’t just focus on the total price when signing a contract. These three details can make you lose hundreds of thousands less:

• ​​Warranty scope​​: Is the whole machine safe or only the light beads? Who will be the one who breaks the control card?
• ​​Terms of transport​​: Is the logistics compensation for the road or the manufacturer admits that it is unlucky?
• ​​Acceptance standards​​: Use the industry-common SJ/T11141-2017 standard, or is it a fuzzy standard customized by the manufacturer?

Once, I saw Party A being cheated, and the contract said "The brightness is not less than 4,000 nits", but the manufacturer fooled people with the data from cloudy days. Smart people now ask​ ​Multiple measurements during multiple periods​​, the average value is taken three times each morning, noon and evening.

After all, buying an LED performance screen is like finding a partner - just looking at your appearance will suffer, you have to find out your background and look at your inner self. Next time you encounter a salesperson who is full of fantasy, you will dump him and ask three times: "Can you try the live broadcast for 8 hours? ”“Is there a Chinese version of the control software? ”“How many screens did the typhoon break last year? ”Make sure he will show his true form. Remember, those who dare to pat their chests and say "five years of repair" may not be reliable, but those who can come up with 110 national project cases must have two tricks.

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