Although more and more TVs are now equipped with surround sound speakers, due to the limited size, the effect can only be heard, plus I am a small family, there is no special video room, so watch TV dramas, movies More is still solved by the television. In fact, it has been saliva Sony's CT790, unfortunately the price is very high, so aimed at the thousand yuan file, but the cheaper CT180 even without a HDMI interface, and surround sound effects can only be said to be very general. Today's single CT390 is a new model this year. Compared to the CT180, which is a few hundred dollars cheaper, the HDMI ARC function has been added, and the "S-Force Surround" front surround sound effect can be said to be basically in line with today's mainstream TV audio. demand. Not much to say nonsense, the following will introduce to you.
Sony/Sony HT-CT390 Wireless Bluetooth Echo Wall Home Theater TV Audio 1899 Yuan Sony Dafa Good Lynx Select Direct Links "Unpacking" 
The CT390 was packaged in the same way as "pistol chicken". The whispering wall and subwoofer were sent in a large package. It was quite a surprise when it was delivered quickly. Haha.
The basic configuration of the speaker is printed on the package, such as the main functions and supported audio effects, such as Sony's own S-master digital amplifier, S-force front virtual tuning, and ClearAudio+ noise cancellation. In addition this speaker also supports MFI (Made For iOS), is Apple's official certification of third-party accessories.
Remove the packaging directly to see the main accessories, echo wall *1, bass speaker *1, remote control, manual, fiber optic interface and bracket.
"Echo Wall"
The first impression of this whispering gallery was that I was too thin, only about 3kg in total, with two 60mm full-range units with 60W power.
In terms of materials, the whispering wall is mainly made of black acrylic. It is estimated that it will be easy to leave scratches for a long time. 
The lower right corner of the panel is the operating area of ​​the speaker. "Power switch", "Input selection", "Bluetooth pairing" and "Volume adjustment" can all be operated on the panel.
There is also a small screen below the horn that will only display content when it is turned on, showing some basic operating information for the amps, such as the mode of operation, songs played, volume, and so on.
On the right side of the speaker, there is an NFC quick pairing and USB interface. See the manual is to play the music in the U disk, but I never bought it back. Haha.
The back of the whispering gallery has an HDMI port. Pay attention that this HDMI port is simply transmitting audio. The HDMI ARC introduces it. The full name is Audio Return Channel. Direct translation is the audio return circuit, and TV audio will be played through the whispering wall. As a simple example, it can directly output all the sounds of the TV, such as the direct TV show, or the PS4 game sound.
Of course, the user must also confirm whether his TV has this interface (HDMI2 on the picture), otherwise there is no way to output it.
The more conscience is the speaker comes with a plastic bracket, you can directly wall, this is more convenient, you only need to hit two holes will be able to get.
"bass"
The weight of the subwoofer is 8.5KG. The horn is on the front and the guide tube is on the bottom.
Underneath the horn is an LED light that shows the wireless connection to the whispering gallery.
Workmanship can only be said in general, the use of a density board around the speaker, it still looks rough, there are two buttons on the back, one is the connection key, one is the power switch.
If the space of the TV cabinet is small, you can also attach the attached gasket to put the speaker horizontally and play it normally.
"installation"
The installation of the speaker is very simple, the echo wall and subwoofer power supply, placed, like my home TV is 65 inches, when the bracket is playing a relatively short, so the echo wall is not a good wall, and directly on the cabinet on.
The HDMI cable of the TV is connected to the game console, so the speaker is first connected with the optical fiber interface, and the HDMI ARC output is directly considered in the later stage.
The following is the focus, that is, the echo wall + subwoofer connection is very simple, open the whispering wall search mode, and then press the LINK button on the back of the subwoofer, subwoofer lights to keep on the connection is successful. Personally think that the connection between the two should use what internal wireless protocol, will maintain 0 delay, synchronized sound effects.
"Effect"At present, there are two use scenarios for this speaker, one is to watch movies and play games, and the other is to connect mobile phone Bluetooth songs.
The speaker is equipped with a multi-function remote control, and is powered by two No. 7 batteries, which can directly control the volume or various sound effects. Although the phone also has a Songpal partner, it is still the most convenient remote control. One-touch switch Bluetooth or TV connection.
In terms of sound quality, the best listening position should be about 3m from the whispering gallery. Since it is 2.1-channel, the overall surround effect can be said to be quite satisfactory and pass the mark.
The speaker comes with six sound modes, similar to EQ equalizers, which are standard, clearaudio, games, movies, sports, music, and can be quickly selected by remote control or mobile App.
ClearAudio+ alcohol sound technology is Sony's original audio technology. It automatically adjusts the sound settings according to the content played by the user. Therefore, the speaker I use by default is this mode. For example, if you listen to a song, it belongs to the type of ear that you like. Afterwards, it is obvious that high-frequency enhancement, bass is stronger, and vocal aspects have a closer feeling. But for the details party, it will feel that some details are lost, so when listening to some complex audio, my suggestion is to close and switch other modes.
On the weekends, I watched the “Romantic History of Extinction†on TV. Many dialogues in the film are Shanghainese, and I don’t care enough to see the details of the movie. CT390 has a special "voice vocal" adjustment key, so I use the remote control to vocal +2, is not afraid to miss important lines.
By the way, I also played with WIIU for a while and I was able to feel the "Zelda Legend". I could also feel the clearaudio+ tuning, such as the sound of clear grass blowing on the grassland, the owl's cry at night, and the sound performance of the fight. Excellent feeling.
Although the Bluetooth speaker did not speak the sound quality, but still tested it, first came to the first Yang Miriam's "I am a pity, I am an Aquarius." Miriam Yeung belongs to the kind of singer with strong penetration and emotional expression. The auditory sense is that the first tone is very crisp. At the same time, it is lighter and gentler. The details of the intermediate frequency explain clearly and the degree of restoration of the sound is relatively full. In addition, the expression of the slightly vibrato of each sentence of Yang Qianyu is very fresh; but there are also shortcomings, and the sound will be slightly Some distortion.
In terms of sound field, I used some symphonies to test. After all, the symphony's arrangement is complicated, many instruments are a good test object, and the surround effect is good. On the sound field, the position and the sense of hearing of the instruments give an accurate taste.
The HT-CT390 can be said to be an upgraded version of the CT180. The HDMI interface has been added, and the surround sound effect has been enhanced. The wireless connection installation method is also very simple and fast, plus Sony's various black technology sound effects; but it also has its obvious shortcomings. For example, the size of the echo wall is too thin, workmanship is generally, and it is recommended that the students with limited budget consider that the price of 1,000 yuan has a good price/performance ratio, and there is also a brand bonus, haha.
Thank you all for reading. 
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