Xiaomi held a new spring conference on March 27, releasing the Xiaomi MIX 2S with wireless charging and charging function. At the same time, it also released a game book and a smart speaker Xiaomi Xiaoai speaker mini. My friends from Love Audio Network got the Xiaoai speaker mini as soon as possible, and shared the hands-on video with you. I believe that through the video explanation of the editor, everyone must have a preliminary understanding of the Xiaoai speaker mini.
And for such a cost-effective product, there must be many netizens who want to know if its internal materials are authentic enough. Then today I Love Audio Network will deeply analyze the materials and workmanship of this hundred-yuan smart speaker through the form of graphic disassembly.
Although the editor has given a brief introduction to the appearance of the small love speaker mini before, it is still necessary for the editor to revisit its appearance. After all, there are many things that the editor has dismantled.
1. Xiaomi Xiaoai smart speaker mini unpacking

In terms of shell packaging, the Xiaoai speaker mini uses a white cardboard packaging box, which integrates Xiaomi’s consistent simple design style. The general outline of the Xiaoai speaker mini can be seen on the front of the packaging box.

There is a QR code on the back of the box, and you can download the Xiaomi AI App by scanning the code with your mobile phone. You don’t need to go to the app store to search, which is convenient and accurate. In addition, there are some specific product information on the back, such as product model (LX01), packaging list, interface, customer service phone number, etc. Xiaoai speaker mini is manufactured by Xiaomi ecological chain enterprise Shanghai Chuangmi Technology Co., Ltd. The production date is February 2018, which is very new.

Xiaoai speaker mini has similar functions to the previous generation and can support all Mijia smart home products, such as Xiaomi desk lamps, Xiaomi fans, rice cookers, sweeping robots, and more.

At the same time, the small love speaker mini also supports multiple functions of multiple applications such as QQ Music, Tencent Cloud Small and Micro, and Sina Weibo, which is quite practical.

Open the lid of the packaging box and you will see the real body of the Xiao Ai speaker mini. White degradable blister is used as the lining of the packaging box, which is simple, lightweight and shock-absorbing.

The items in the box include: Xiaoai speaker mini, charger, instruction manual, etc.

First of all, let’s take a look at the main part of the small love speaker mini. The first impression of the small love speaker mini is that it is simple and stylish. There are only four control buttons and four pickup holes on the front. The RGB multi-color status indicator can be displayed through the upper cover, and the lighting is soft and not dazzling. Such a simple appearance design is very in line with the aesthetics of today’s young people.

The small love speaker mini is designed with a round and smooth body, and adopts a body shell made of flame retardant PC material, which has relatively high hardness, is more scratch-resistant, and feels quite comfortable.

Under the appearance of the simple gray and white color scheme, what attracts the attention of the editor the most is the petite figure of the Xiaoai speaker mini. Because I have experienced the previous generation of Xiaoai speakers before, although they are very good in all aspects, but the physique is a little large, and the center of gravity is always a little high during use, which is easy to knock over. Xiaoai speaker mini perfectly solves this problem, and I personally feel that the experience should be better when used daily.

The small love speaker mini uses a dark gray base, which is full of small holes, which is also the location of the speaker. In order to facilitate the diffusion of external volume, the small love speaker mini has been heightened at the four corners. At the same time, silicone anti-skid pads are added at each corner to avoid displacement caused by vibration when playing music.

Speaker hole, foot pad close-up. Speaker hole is not a simple specification, but a gradual change trend from the inside to the outside. Maybe there is some special acoustic principle in this design. In any case, I always feel that a changing appearance design is the best.

The size of the small love speaker mini is really petite, and the front is about the same size as a single-coil wireless charger.

The thickness is also less than the height of a charger.

Together with Apple’s HomePod, the size of the Xiaoai speaker mini can be said to be extremely small.

Another biggest difference from the previous generation of Xiaoai is that the Xiaoai speaker mini uses the Micro USB interface to replace the previous DC round head power supply interface. That is to say, users can use more charging accessories (including mobile power supplies) to power the Xiaoai speaker mini, which is more portable and can be used normally even in the car and outdoors.

The model of Xiaoai speaker mini is LX01. In terms of power supply, enter 5V 2A (10W), which is also the most common power supply specification today. General mobile phone chargers can power it normally.

The standard charger model is ECVC + 10050-2000, and the manufacturer is Yashi Electric Co., Ltd. It supports 100-240V global voltage input, and the output specification is 5V/2A. The charger and cable are designed in one piece.

I Love Audio Network adopts ChargerLAB POWER-Z KM001 actual measurement, the original charger supplies power to the Xiaoai speaker mini, and the static standby power is about 1.8W.

When the small editor and the small love speaker mini have a conversation, the power supply of the charger will increase, but the magnitude is not very large.

Using the common USB interface charger and third-party data cable, the Xiaoai speaker mini can still work normally.

Standby temperature, at room temperature of 26.5 ° C, using a FLIR thermal imaging thermometer, the maximum temperature of the fuselage surface is read to be 44.6 ° C. Well, the appearance is almost introduced here, and the disassembly part is entered below.
Second, Xiaomi Xiaoai smart speaker mini disassembly

There are no screws around the Xiaoai speaker mini. The integrated structural design avoids the exposed gap and affects the appearance to the greatest extent. Find the key position where the upper and lower covers are buckled, and use a crowbar to slowly pry up the base cover along the edge of the base of the Xiaoai speaker mini.

The base part and the main body part of the fuselage are bonded with strong double-sided tape. Although it is considered non-destructive disassembly, it still takes some effort to disassemble it for the first time.

A layer of dust net is added to the base part.

It is similar to the assembly style of Xiaomi mobile power bank. By opening the cover, you can find the location of the fixing screws.

Unlike the common interfaces on mobile power supplies, the Micro USB interface of the Xiao Ai speaker mini uses a separate PCB board and is fixed in the corresponding position with two screws.

Remove the small PCB board of the power supply interface, and you can see that the cable connection method is not soldered, but fixed with snap-on connection terminals. The connection cables come in six colors: green, yellow, blue, white, black, and red.

Snap-on connection terminals are very convenient to disassemble and assemble.

Terminal male details, inside are 6Pin all copper pins.

The screws at the four corners are all sinking designs, and a screwdriver that is slender enough must be used to remove the hidden screws.

After removing the sunken screws at the corners, the speaker module can be pried up along the edges.

Foam double-sided adhesive seal is used between the speaker module and the housing.

The speaker is also connected to the main board via terminals.

Remove the speaker connector.

Speaker front.

JC015-1304-04 is printed on the back of the speaker, with a power of 2W and a resistance of 4Ω. Since the speaker and the shell are fixed with glue in addition to screws, we will not continue to disassemble it here, and then look at the control circuit section below.

After removing the speaker, you see a metal plate held in place by four screws.

Remove the four fixing screws and find that there is a small light blue thermal pad attached to the back of the metal panel for CPU heat dissipation.

The metal panel does not attract magnetism and is light in weight. It should be made of aluminum. Aluminum has very good heat dissipation properties.

Opening the front operation panel also requires removing the two screws at opposite corners.

After all the screws are removed, gently push the front panel from the inside out with your finger to open it. It can be seen that the structure adopts the hamburger design style, with a barrel in the middle and fastened at both ends.

The technical core of the small love speaker mini is all concentrated on this black PCB board. But if you want to see the complete PCB board, you need to continue to remove the four screws.

Finally, you can see the full appearance of the PCB board. Only a PCB the size of a business card of I Love Audio Network realizes so many functions.

On the front of the PCB board, the white one in the center is the patch status indicator, and the four red buttons a little outside are the function buttons, which correspond to the volume plus or minus, next song and wake-up buttons respectively. The four black ones in the outermost periphery are pickup microphones, and the two touchpoints in the upper left corner are Bluetooth antennas.

The microphone is a patch type, and the periphery is wrapped by a silicone sleeve.

A layer of heat dissipation sticker was pasted on the front, and several patch components were attached below. The board was printed with the "MI" logo and the internal number LSAM022F1-1.

Let’s take a look at the overall layout of the components on the back of the PCB board, which will be introduced in detail below.

In terms of storage, Toshiba’s 1Gb EEPROM chip is used.

Toshiba TC58BVG0S3HTA00 detailed specifications.

Xiaoai speaker mini adopts Quanzhi R16 processor, the processor has built-in 4-core A7, dual-core Mali400GPU, supports dual-channel DDR3 and DDR3L memory, built-in 8bit flash controller, and supports SLC/MLC/TLC flash memory. In terms of audio, the R16 integrates HiFi-level audio decoding and integrates two analog microphone inputs.

Allwinner R16 processor basic specifications.

Quanzhi R16 processor chip block diagram.

EtronTech’s DDR3 memory, 1Gb, DDR3-1600.

EtronTech EM6GC16EWXC detailed specifications.

The AC108 multi-microphone array circuit produced by Xinzhihui supports four microphone inputs and converts analog audio signals into digital signals for output to the processor. The Xiaoai speaker mini uses a total of two AC108.

Core Zhihui AC108 detailed specifications.

The AXP223 is a highly integrated power system management chip that provides a complete power solution that is easy to use and flexible to configure for applications where single-cell lithium batteries (lithium ion or lithium polymer) require multiple power conversion outputs, fully meeting the requirements of multi-core application processor systems for relatively complex and precise control of power supplies.

This CSP package chip without silk screen printing is an important hub for the mini speaker to connect with the outside world. It is responsible for WiFi and Bluetooth connections, and the upper left corner is the PCB antenna.

TI’s TLV62565, 1.5A switching step-down. Input voltage range 2.7V-5.5V, 1.5MHz switching frequency, with power saving mode for light load efficiency, quiescent current only 50μA, efficiency up to 95%, output voltage adjustable.

TI TLV62565 detailed specifications.

At this point, the disassembly part of the small love speaker mini has been introduced.
I love audio network teardown summary
1. It is worth affirming that the Xiaoai speaker mini has a small and portable body shape and a simple and delicate design, which are almost the most valued points of contemporary young people. In addition, even if the price is only 169 yuan, it can be seen from the materials and workmanship of the product that it is attentive enough and quite valuable.
2. In terms of workmanship, I found that every assembly step was very rigorous, such as using double-sided foam glue to seal, using a single aluminum plate to enhance heat dissipation, and using a large number of screws to ensure assembly strength.
3. In terms of materials, using Allwinner’s R16 processor, Toshiba’s 1Gb EEPROM chip, Yuchuang’s DDR3 memory, and two Core Zhihui’s AC108 multi-microphone array circuits, the price of just one PCB board is not low.