Perhaps in most people's impression, what the projector keeps in memory is the classroom at school, the conference room at work, and the messy lines behind expensive machines. In fact, in order to experience the big "visual" world and pursue a higher quality of life, many people have begun to choose home projectors to create private audio-visual territories.

The Acer H7550ST experienced this time has excellent performance in product appearance, detail workmanship, projection distance, display effect and other aspects, but why is the word "nearly perfect" used in the title of the article? Because one of the highlights of Acer H7550ST is the HDMI wireless projection function, which can separate the wireless end from the projection end, effectively solving the problem of complex and troublesome wiring of traditional projectors. Unfortunately, the accessories of HDMI wireless projection are optional products, but I didn't experience them this time. Therefore, I gave a discount on the experience. After all, looking at a machine that could have been clean and refreshing, I always drag my tail and feel like I don't want it.

Of course, since I can't experience the HDMI wireless projection that I think is the most practical and playable, this experience focuses on the projection effect test, which is the "original intention" and root of projection. Next, we will first summarize the advantages and disadvantages of Acer H7550ST, and then review the experience by item. Finally, we will talk about some small feelings.

"Almost perfect left and right"

Main advantages: 1. 3000 lumens, wide application scenarios. 2. Short focus technology, 1.5 meters can cast 100 inch pictures. 3. The projection color restoration is accurate, and the effect of wide color gamut is good. 4. The dual 10W speakers have good sound quality. 5. High heat dissipation efficiency.

Main disadvantages: 1. The HDMI wireless projection module is not included in the 10000 yuan projection accessories, so the experience is discounted. 2. The body buttons are soft. 3. Fan noise is common to projection.

"No matter how good the package is, it can not withstand the ravages of express delivery"

Acer is worthy of being an old PC manufacturer. The inner bag of the H7550ST projector is directly designed as a computer bag. The projector is fixed inside the bag with a tape. The side bag contains the attached power cable, VGA cable, manual, warranty card, driver and other accessories. In this way, the machine can be easily stored when not in use, and can be easily carried when going out. The inner package and the complimentary 3D glasses are fixed in the outer package with profiled foam strips, which is very safe to watch.

However, unfortunately, the 3D glasses case did not have such good shock absorption protection inside. There are also two glasses inside, as well as charging wires, lens wiping cloth, instructions and other accessories. It was found that the lens of a pair of 3D glasses was injured and cracked. It seems that Acer needs to strengthen shock absorption protection on accessories.

"The overall appearance is like a dignified man"

When typing the word "dignified man", the tail did not understand why he summarized and commented on the appearance of Acer H7550ST projector like this, but this was the first time he saw him/her.

Acer H7550ST projector uses classic traditional white with silver color, with dignified visual effect. The fuselage size of 357 × 241 × 98mm and the product weight of 3.4kg obviously cannot be grasped by hand. However, the arc design of the fuselage and the smooth corners of the transition outline the fashion and beauty of the huge fuselage.

The most attractive thing in the front of the fuselage is the F/2.6 super lens surrounded by the silver "radar wave". It seems that whether it is a beauty or a machine, big eyes are beautiful. I like this very much, and the effect is excellent. The lens protection cover is connected to the body with an elastic rubber rope, which is very convenient for protection and use. The small black round window beside the lens is the receiver of the infrared receiver remote control.

The top of the fuselage is mostly white, surrounded by bright silver edges, and etched with texture stripes. Although it is made of plastic, it can reflect metallic luster under the light, which is very textured. The upper left is the focusing window. You can rotate the upper focusing ring for manual focusing, or you can move the lower focusing ring for 1.1X physical focusing. The damping of the two knobs is appropriate, and the adjustment feel is good.

The lower right part is the key area, which is convenient for power switch, menu selection, signal source search, picture ladder correction, volume adjustment and other operations directly on the machine body without the remote control. The keys are clearly marked, but the touch is soft, and the feedback force can only be felt when the key range is large. The operation is not very comfortable.

The heat dissipation of the projector is very important. The two sides and part of the front of the Acer H7550ST are hollowed out. From the gap, you can see many fans built in, as well as some components. This design helps greatly to improve the heat dissipation efficiency.

Acer H7550ST has rich interfaces, no less than commercial projectors. The interface has 3 HDMI interfaces, 2 VGA I/O interfaces, 2 audio cable I/O interfaces, and USB, composite video, component video, S-Video, 5VDC and other interfaces, which can meet different needs. Among them, HDMI2 interface supports MHL technology to facilitate connection with mobile intelligent devices. At the same time, the logo at the bottom of the interface is just a sign of Acer H7550ST's extraordinary strength.

A boss is set at the bottom of the fuselage, which is used for lifting and fixing with four lifting holes, and is also helpful for heat dissipation at the bottom. The height adjustment of Acer H7550ST is composed of two parts. The leg near the lens can be fixed at any position through the button snap switch, mainly to adjust the elevation of the body; The lower two support legs, one is fixed and the other is knob type, mainly to adjust the level of the fuselage in different use scenarios. The bottom of the three support feet are equipped with rubber pads, which have great retarding force and good anti-skid effect.

"The details reflect the style of the big brand"

With Acer as the flag, the details of product workmanship are indeed guaranteed. From the above overall appearance introduction, it can be seen that the H7550ST projector has experienced the brand style in terms of materials, design and workmanship, or details. For example, although there are many openings at the tuyere and other locations, the material is solid and there is no burr; The gaps between the keys and the joints of the machines are even.

As mentioned at the beginning of the article, one of the highlights of Acer H7550ST is the HDMI wireless projection function. When I received the projector, I searched the package and found no wireless transmitter. With the last hope, let's see if there is a wireless receiver. In terms of design, the H7550ST has a hidden design for the wireless receiver, which can be installed only after the top cover is opened. To remove the top cover, unscrew the three screws on the side of the port on the body, and then remove it with a little force. At this time, you will find that there are small springs springing up under the three screws, and the ends are still fixed, so the screws do not fall out like other products, ensuring the convenience and safety of disassembly.

After removing the top cover, it can be seen that the internal details of the machine are very meticulous. Unfortunately, the location of the HDMI receiver was empty. At that time, the tail was full of horses. The other side of the zoom ring is the lamp unit position, which also supports quick bulb replacement. Acer H7550ST uses OSRAM 210 watt ultrahigh pressure mercury lamp. The official data is that the life of the general mode lamp is 4000 hours, the life of the economic mode lamp is 6000 hours, and the life of the ExtremeEco mode bulb is 8000 hours. In this way, it can be used for an average of 4 hours a day, and it can be used for nearly 3 years under normal life, which is also acceptable.

"Regular interaction"

Although I did not experience the wireless module of Acer H7550ST this time, it is also convenient to connect the notebook. After starting up, there are grid lines to help focus and adjust the level and trapezoid correction. You can also set the projection mode, projection position, etc., and then switch to the current input source, and you can start to enjoy the pleasure of the large screen.

In fact, although there is no HDMI wireless module this time, you can enjoy the pleasure of watching movies and videos wirelessly as long as you use HDMI cable to connect accessories such as network boxes. Online viewing is convenient and comfortable.

When using the Acer H7550ST, you can set many parameters such as picture color, image, audio, 3D, language, and projection settings through the buttons on the remote control or the body. The menu directory is simple and intuitive, and the operation interaction is also convenient. However, it is recommended that Xiaobai, who is not very clear, should not change the parameters.

This is the infrared remote control attached to the fuselage. Although its shape is relatively traditional, the small buttons are clearly marked, and the feedback feel of the buttons is much stronger than that of the button on the fuselage.

"The king of the small dark room"

According to the official introduction, Acer H7550ST is equipped with a new generation of Acer color fidelity technology, which can use dynamic RGB gain to improve the color display effect. At the same time, adjust the light plate and color wheel rotation to match the indoor environment on the original image, improve the natural color temperature, and make the color brighter. Moreover, the DynamicBlack technology improves the image contrast to 16000:1, with clear image layers, which is close to the visual experience of the human eye.

The most important thing is that the Acer H7550ST projector has 3000 lumens and 1080P resolution, which can be easily used in a small dark room or in the daytime. It also has short focus technology, which can project 100 inch full HD images at a distance of 1.5 meters, and is very suitable for small houses or bedrooms. It's quite cool to watch movies in bed.

In fact, no matter how good the advertisement is, it depends on the curative effect. The test pictures involving the projection effect were taken with Nikon 35 point 1.8 lens. They were cut to show the effect without any post adjustment. The following picture is the indoor test at night. This is the environmental reference picture. The projection screen and the surrounding conditions are taken directly. The 3000 lumen high brightness is similar to the environment when the light is turned on when the small dark room is projected.

1. By comparing the original image with the projected image, it can be seen that Acer H7550ST performs well in color restoration, contrast, overall brightness, and sense of hierarchy, which directly proves its technical performance.

2. Three primary colors test: in order to facilitate observation, the three primary colors projection is cut and combined, and the mouse pointer can be seen. The projection effect is accurate in color restoration, and the performance is also good.

3. The color saturation test is the same as the effect of the three primary colors, with good permeability.

4. Gray scale test, the actual effect is better than the real picture, and the performance is OK.

5. Film dynamic effect test. The films tested were Blu ray original discs and 1080P full HD films. The color transition of Acer H7550ST was natural, the picture quality was very clear, and the dynamic details were sharp. The telepresence and shock brought by the large screen were incomparable to TV. In addition, Acer H7550ST has two built-in 10W high-quality speakers that support DTS decoding. The sound level and restore degree are no less than some desktop audio, which is sufficient for use in a small space.

6. 3D test. Acer H7550ST can not only watch 3D movies with the attached shutter 3D glasses, but also support the automatic conversion of 2D to 3D signals through the HDMI port. However, after the conversion, it feels that the color and brightness have declined, but it has little impact on the function. It is recommended to directly download high-quality 3D videos for viewing.

7. Day test. The first picture below is a reference environment picture taken in the daytime when the curtains are opened indoors, and a daytime projection picture. It is true that 3000 lumens make it possible to use a projector to watch blockbusters in the daytime. Of course, the projection effect should be discounted when the light is dark, but this effect has surprised me in the daytime.

"High efficiency heat dissipation"

It has been said many times before that the heat dissipation of the projector is very important, especially for Acer H7550ST, an ultrahigh pressure mercury lamp and 3000 lumens machine, the heat dissipation pressure during operation is also very high. According to the test, under the ambient temperature of 23 ℃, the temperature of the hot air discharged from the front cooling window of the fuselage is more than 80 ℃, and the temperature of the bulb on the top of the fuselage is about 40 ℃.

At the same time, the temperature near the focusing ring on the top of the fuselage is only about 28 degrees, and the cooling windows on both sides of the fuselage are only about 32 degrees. It can be seen that many fans on both sides inhale air and then discharge it from the front, so the heat dissipation effect is good.

"What kind of projector is needed?"

Looking back at this year's projection market, intelligent projection is booming, and professional projection is also competing for home users, but what kind of projector do we need?

In fact, these two types of projections have their own advantages and disadvantages. Smart home or portable projections, such as Shenhua Y1 and Z1, are relatively inexpensive, thanks to the intelligent UI, which makes online audio and video resources readily available, and the operating habits of Android applications, which make the use threshold lower. However, although the LED light source lamp has a longer life, due to technical limitations, the lumen and resolution are lower, and the application scene will have certain limitations.

The traditional professional projection manufacturers represented by Acer H7550ST are still professional projection manufacturers, so the projection effect is better in color, contrast and brightness, with many application scenes and good projection effect. However, the high price and the lack of intelligent UI as a support limit the market development.

In a word, you should choose a projector suitable for yourself according to your budget, expected effect, application scenario, hands-on ability and other aspects. Users who want to obtain more professional projection effects must choose the Acer H7550ST projector with HDMI wireless module accessories, so that the projection experience will be more perfect.