BenQ Bluetooth speaker out? As a veteran netizen, I don’t even know it at all. I checked it on Shangguan. Sure enough, I’m now out of the second generation. Think about it and I can understand it. A family entertainment technology company must have a lot of product lines to see. My previous understanding of BenQ was limited to displays and projections.
Unpacking:
Aunt Zhang also asked me to measure the speakers........ This is not good, and my ears are getting more and more critical. If you don’t say much, here’s a glimpse of the protagonist:
This SF arrived every other day and it took 4 days to arrive 
Old rules, out of the box tools 
Open the box and use a bubble wrap inside. Aunt Zhang is very careful 
Take out the box to see what is printed on all four sides. This second-generation usage seems to have increased to an abnormal 18 hours. The USB connection can support 16-bit digital audio transmission, as well as lossless 3D audio. 
Feeling design and some changes in 1 generation 
Packing box with tray drawer
Pulled out and reflected in front of a cardboard with treVolo S, tells you that this is the second band, with a S 
You can see the speaker body and accessories by removing the cardboard. You can see that the gold circle of the show is loomingly visible. 
All accessories, including a mcro usb cable, a bag, a power supply, a power adapter, this adapter can be adapted to other countries plug system, but the domestic sent only one, good financial 
The speaker still feels a bit heavy 
Although a bit of weight, it still confirms the old saying - something heavy only appears solid material, see the golden ring of Sao Sao. 
1 kilogram weight 
Appearance evaluation:
In its undeveloped state, the second-generation design is simpler than the first generation. The front panel is replaced by two large gold rings, just exposing the bass horn, and the benefits are more direct to the bass release. The woofer has also been redesigned and the effect should be better.
At the time of unfolding, it was absolutely like a satellite. This time, it also gave up the first-generation trapezoidal design on the exterior design and changed it into a more direct rectangular shape. The overall appearance is even smaller, and it can also reduce the appearance production cost to some extent. . 
The top button looks much simpler than the first generation. There are fewer gold rings around the button and the light is clamped. This can also be understood as cost savings. Even the Bluetooth speaker's standard - Bluetooth calls are canceled, perhaps reduced. The cost is added to other places, such as this time increasing nfc support.
From the side you can see that the 15 degree inclination is still maintained. This helps the speaker to point closer to the person's ear when listening to the song. Therefore, manufacturers also recommend that everyone listen to the speaker for the best effect when listening to the song.
Passive radiating woofer on both sides play an important role in the contribution of bass. The shell is made of metal to facilitate heat dissipation, and the shell is also embedded with 5 rubber particles, which protects the electrostatic film speaker. 
On the back of the first generation shrink more obvious, cancel the audio output interface, it can not be used as a Bluetooth adapter, power and data combined, which is a good design, the interface does not have any logo.
Only the electrostatic thin film technology can make the speaker so thin, and the cabinet is only about 6mm thick, so folding is the most convenient way to save.
The characteristic of the electrostatic film speaker is that it sounds on both sides. Therefore, depending on the reflection of the obstacle, the sound field is larger than the normal speaker.
In general, the appearance of benevolent eyes, I feel the appearance of a generation more beautiful point, do not know how to think, but the speaker this thing, the appearance can only be ranked second, the sense of hearing is the most important, if the manufacturers look The money saved by the province has been added to the sound quality improvement. That is a conscience manufacturer. From the perspective of the upgrade of the bass horn, it is indeed improving the sound quality. It is said that the second generation adjusts to the taste of pop music in order to adapt to young people. Over. 
On the right is the last review of the Oxley x6. You can see that the treVolo s is a lot shorter than the treVolo s, and the bass horn is much smaller. However, the treVolo s is impressive in the sound quality performance of the back. 
Originally, I took a lot of pictures, or first measured the speakers and sent them out in the end so that everyone would complain again.
As a music lover, before the evaluation of this speaker, my understanding of the static speaker is 0, so we first come to Baidu about the electrostatic speaker sound principle and characteristics:
(Extracted from Baidu Encyclopedia) Electrostatic loudspeakers (electrostatic loudspeakers) refer to those types of loudspeakers in which a very thin diaphragm moves back and forth under the influence of electrostatic force, and electrodynamic loudspeakers that rely on electromagnetic force to move the diaphragm back and forth are not the same. of. The diaphragm of the electrostatic speaker is very light, so it has excellent resolving power and can capture extremely subtle changes in the music signal and fully express the charm of the music.
Compared with the currently widely used electrodynamic speakers, the structure of the electrostatic speaker is much simpler. It has no magnets, but uses the synergy of the audio signal source and the DC polarized power source to promote the accumulation of the surface of the diaphragm (movable electrode). The density of the charge, so that the diaphragm is affected by the alternating direction of the electric field, and accompanied by the audio signal source vibration speaker.
Then pay an official and easy-to-understand comparison of technical features:
From the above we can probably draw the following conclusion: The advantages of electrostatic thin film speakers are the detailed performance of the middle and high notes and the perfect low distortion, that is, they can be presented to the audience in the way that they are closest to the original sound. The disadvantages are obvious, due to the electrostatic film's Technical limitations, the box can not provide enough force to push the air when sounding, so the bass is a short board, BenQ also added two cone-bass woofer and two passive bass in the electrostatic film technology Radiation horns to compensate for the lack of low-frequency, with two power amplifiers to promote the two woofer and two electrostatic film speakers.
After understanding the electrostatic film technology, let's take a look at how the speakers operate:
Switching machine: Press the power button for about 3 seconds to turn on and off.
Bluetooth connection: Press and hold the Bluetooth logo button for about 3 seconds. The Bluetooth indicator will turn blue and flash. At this time, enter the Bluetooth search interface of the mobile phone and find treVolo. Click to connect. The Bluetooth indicator will turn blue. bright. Then you can use your phone to play songs. Bluetooth can connect to multiple devices at the same time. I tried to connect iMac and iphone at the same time, but it can only be played by one device.
There are only two types of sound effects, one is the original sound, and the other is 3d lossless sound. Switching is also very simple. Press the mode key. At this time, the power indicator can be used to judge. When the mode is pressed, the power indicator When the red light is flashing, it is the original sound effect. Press the mode key again, and the 3d sound will sound when the power light is blinking green. 3d audio effects are equivalent to the amp function, zoom in on details, not blindly excite the sound like an exciter, but the high school bass were repaired and amplified to the speaker playback, after opening the 3d sound can clearly feel the details The vocal sound is clearer, but there is a disadvantage in that the bass sound is sometimes too large, causing the box to have a low resonance and strange sounds. Therefore, it is best not to turn the volume up to the maximum when listening to low frequencies after turning on the 3D sound. Well, this can reduce the bass horn resonance.
How much power can be judged in two ways, one is to see the color of the indicator light, one is to connect the app, but it is puzzled why BenQ did not add the power display to the notification bar of the iphone to display it. The Jabra solemate and Ostro support this power display, see below
The difference in the amount of electricity, there are three colors to determine the indicator, when the power is above 81% is green light, when the power in the 31% -80% when the yellow light, when the power is below 30% in red light. In the course of my measurement process, the 3d mode was fully activated, the volume was about 80%, and the use time was about 15 hours. Although it was somewhat different from the manufacturer's claimed 18 hours, it was already an amazing figure. Traveling for a day How can I use time?
Then talk about the mobile phone software app, I can only say that this app is dispensable, BenQ did not bother to do it, every time you open the software but also you manually click the Bluetooth button above the speaker before they are willing to connect, this is very Annoying.
Enter the software to display the following interface, you say I want you to use, a little use of a power display, 3d audio switching and dual mode does not require the use of software, directly on the speaker, so say this software Dispensable.
Sound quality comparison evaluation
Next is the focus of this article, other look at the picture just fine, I will compare the sound performance of jabra solemate, auluxe x6, treVolo S, followed by a video for reference only, after all, everyone's listening does not feel the same, In addition, there is no professional recording equipment, so the recorded sound is definitely less than what the ear hears. The following auditions are conducted with 3D sound effects enabled.
First of all, find a user recommended Tong Li version of Chrysanthemum on BenQ's vreVolo WeChat public account. This song has Guzheng, Hulusi and other musical instruments, very beautiful and graceful. At the beginning of the song, the zither was performed by the treVolo S. The advantages of the electrostatic film speaker in the details of the tenor were fully exploited. The following cucurbit also showed the low distortion of the electrostatic film speaker. It was just a little mixed with some drums. The wind rushed, the voice came out, very sweet, and the details were perfect. Even the viscous sound of the tongue and mouth was clearly audible. Compared to the performance of treVolo S, the other two speakers were overshadowed, but the other two speakers listened. This song is also inappropriate.
Next is Adele's Some like you. This song doesn't need to be introduced by me. It's familiar to me. Adele's voice is a little deaf but at the same time full of strength. Listening to her song makes people excited. TreVolo S's performance in this song is also remarkable, especially in the performance of her hoarse voice, very in place, the other two speakers in the midsonic performance is also OK, poor in detail, this is also static The advantage of thin film technology, when the gap widened when the climax, TreVolo S to Adele's mid-range performance is very good, bass slightly, but very flexible.
In the end, I tested the bass. Originally I had no hope for the treVolo S's bass, but after a comparison test, I came to the conclusion that the bass effect is still above the solemate and x6, especially the x6. I'm disappointed, so big. The woofer's bass sounds like cotton, with no force. This was also mentioned in my previous tests. The treVolo S's bass performance is actually higher than expected, flexible and with dive, although not so deep, punch Feeling is there.
After comparing tests I give a ranking it:
Treble: treVolo S>x6>solemate
Alto: treVolo S>x6>solemate
Bass: treVolo S>solemate>x6
to sum up:
The BenQ treVolo S is the best sound quality portable Bluetooth speaker I've heard so far, whether it's mid-range or low-frequency, it's more balanced. Of course, the other two speakers aren't useless, at least when outing or bathing. Question, treVolo S I suggest still listening to the music in the room quietly, I would also like to give everyone a suggestion that when the 3d sound effect is turned on, the best sound is best not to open the biggest, because some bass will cause the passive radiation horn and the box collision Strange sound, this is not good for woofer, volume is about 80% on the line.
Because this speaker sounds on both sides, when listening to music can reflect the music to form a certain sense of space, so the best place to put the speaker near the wall, although the electrostatic film speaker points weak, but it is best to face the speaker to achieve The best listening effect. Although the listening time was short, it has not yet been opened, but 80% of the skill is already available. The original sound is moving! Recommended for all people who like music.
This time, BenQ has walked in the forefront of the world and opened the door to portable electrostatic speakers. After that, there will certainly be more excellent electrostatic speaker products for everyone to choose, so that everyone can enjoy the beauty of this detail. Finally, I hope everyone will listen to the song. Happy, happy song! Oh, yes, there are still some pictures without hair.
Bass close-up 
This is a feeling, a beam of light just hit the panel 
This package is much easier to send, the rope is thick enough 
Listening on the unit is not bad 
Listen in the bedroom 
Or close-up, talking this woofer strange shape, the middle is concave, increase the low frequency flexibility? Or midrange? 
Gold circle close-up 
Bottom close-up 
Slightly higher than rg 
Kasabi beat treVolo S 
Color m size without ancestors, huge 
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