Have you ever encountered such a situation? You obviously spent a lot of money to install an LED display, but the sound is either too muffled or too floating, and the audience always says they can't hear the lines clearly? A customer complained to me two days ago. They were holding a promotion in a shopping mall. The advertising video played on the display screen was clearly clear, but customers said the sound sounded like it was coming out of the ground. ​ ​If you install the sound column in the wrong position, the effect will be directly discounted by 50%.​ ​, this is really not a scare.

At this point, someone may want to ask: Isn’t this sound column just a speaker? Isn’t it enough to just hang it next to the display? Alas, novices are most likely to fall into this misunderstanding. Let’s talk about this seemingly simple but hidden installation method today, and teach you how to avoid those deceptive operations.

First understand what the sound column is for.

This thing is no ordinary speaker, it is a directional sound transmission device specially designed to match the display screen. Just like cooking, you need to control the heat.​ ​When installing sound columns, you must understand the core concept of "sound field coverage"​ ​. For example, if you install a sound column on the top of a 3-meter-high outdoor screen, the sound heard by pedestrians passing below is like standing on the top of the mountain and listening to people shouting at the bottom of the mountain - they can hear the sound, but cannot understand the words.

To be honest here, some novices always want to save trouble and just put the sound column behind the display. The result? The sound was completely blocked by the screen and reflected on the wall to form an echo. The effect was comparable to a concert in a cave. I have seen this situation often at exhibitions, especially for projects that are in a hurry to meet deadlines. In the end, rework costs more than serious installation.

Golden rules for installation location

Let’s get straight to the practical stuff, remembering these three key points:

1. ​​sight height principle​ ​: When a person stands and looks at the screen, the horizontal line of the ear is the optimal installation height. For example, for poster screens in shopping malls, it is most suitable to install the sound column 1.6-1.8 meters above the ground.
2. ​​Angle control method​ ​: There should be an angle of 15-30 degrees between the sound column and the display screen, like this (imagine making a V with your hand). This will not only prevent the sound from being blocked by the screen, but also keep the sound and picture directions consistent.
3. ​​Distance control tips​ ​: For every 2 meters of increase in width of the outdoor large screen, the sound column must be retreated by 0.5 meters. For example, for a 6-meter-wide advertising screen, the sound column should be kept at least 1.5 meters away from the edge of the screen.

Once I helped a client renovate a stadium fence screen, and the original sound column was installed directly above the screen. As a result, the audience in the front row was so shocked that their ears hurt, and the explanation in the back row could not be heard clearly. Later, we changed it to install it diagonally at a 45-degree angle on both sides, 3 meters away from the screen, which immediately solved the problem. You see, this is the difference between a professional installation and a casual installation.

Frequently Asked Questions and Answers

Q: Which one is better to install on the top or bottom?
A: It depends on the scene! The stage floor tile screen is suitable for hidden installation at the bottom, and the sound is sent upward from the ground for a more immersive experience. But if it is a high-hanging advertising screen, the top installation must match the downward tilt angle.

Q: How to install sound columns on a transparent screen without affecting the visual effect?
A: At this time, you should choose ultra-thin sound columns and install them along the inside of the screen frame. Remember to face the sound hole toward the audience, and never let the metal mesh face the screen, otherwise the reflection will destroy the transparency effect.

Q: Will it affect the sound quality if it is windy or rainy?
A: Choose a model with a protection level of IP65 or above and install it in a location with a rain-shielding eaves. Here’s a little trick: add an anti-seismic sponge pad behind the sound column, which can prevent rainwater from penetrating and reduce resonance noise.

Editor's opinion

After working on projects for so many years, I have seen too many bad things caused by improper installation of sound columns. Last time, a gym installed a sound column directly behind the display screen. As a result, the music in the spinning class was completely drowned out by the sound of the equipment clashing. Let me tell you, if the installation location is chosen correctly, the sound effects can add at least 30 points to the visual presentation. The next time you install a screen, don’t treat this step as a free gift. This is a hard indicator that directly affects Party A’s father’s satisfaction during acceptance!

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