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SONY Sony WF-1000XM3 true wireless noise canceling headphones disassembly report

via:我爱音频网     time:2019/7/26 0:12:10     readed:30247

WH-1000XM3 is SONY Sony's flagship head-mounted noise canceling headphones. The latest WF-1000XM3 follows this model suffix. It can be seen that SONY Sony has high hopes for new products.

Since the first generation of noise reduction beans has been launched for the past 2 years, SONY Sony is still quite dedicated to the application of noise reduction technology to TWS headphones. After the accumulation and precipitation of previous generations, the WF1000XM3 has won industry acclaim and became famous. .

I love the audio network also participated in the SONY Sony WF-1000XM3 first pre-sale, has already got this new product, the first time for the fans to bring detailed disassembly, analysis report. Through the following decomposition, together to understand what black technology SONY Sony applied to this product.

First, Sony WF-1000XM3 out of the box

The box is still familiar with the taste, from top to bottom are the SONY brand logo, product model WF-1000XM3, this product is built with the industry's famous noise reduction technology; the middle is the product physical map, close-up of the front of the headset; Endurance duration, Bluetooth icon, etc. The top of the box is designed with hooks for easy display on the shelves of the offline store.

The back of SONY Sony WF-1000XM3 box has a real shot and a real shot. The product features are described in English and Chinese respectively. There is a built-in HD noise reduction processor QN1e, which supports HD Voice hands-free calling and comes with a USB Type-C cable.

In terms of battery life, charging can be played for 90 minutes in about 10 minutes; the noise reduction function can be used for 6 hours, and the charging box can be used for 24 hours. The middle technology icon shows that this headset supports NFC connection.

It is worth mentioning that the back of the package is printed with the DSEE HX icon, which is the SONY digital sound enhancement engine that compensates for the loss of high-frequency signals and digital audio compression, bringing high-quality sound close to Hi-Res.

The package is opened from the side, and the inside is a black inner support. The product use diagram is printed on the internal cardboard.

The earphones and the charging box lie quietly inside, and we purchased the platinum and silver color.

In addition to the headphones, 6 sets of 12 ear sets are also included.

The USB Type-C charging cable is standard in the box, USB-A to USB-C, and the cable length is about 20cm. One end of the C port supports the front and back insertion, and is used with the earphone charging box.

Earmuffs are featured. A separate blister pack with 2 materials and different size combinations, long blended silicone earplugs (SS, S, M, L x 2), triple comfort earbuds (S, M, Lx 2) for users Comfortable to wear.

Close-up of the front of the charging box, there is no SONY icon here, a little low-key. The two-stage design features a top metal finish (painted metallic finish) at the top cover.

The back of the charging box is close-up, and the position of the USB Type-C charging interface is recessed below.

USB Type-C charging interface close-up.

At the top of the charging box we saw the SONY faith logo.

useMobile phoneThe charger charges the SONY Sony WF-1000XM3. From the Chargerlab POWER-Z portable current voltmeter, the charging parameters are 5.019V, 0.337A, and power 1.69W.

Put the headset into the charging case, open the cover, and put the headphones quietly inside.

The orange-red decorative piece here is a light guide column, which will be described in detail later.

The NFC logo indicates that the SONY Sony WF-1000XM3 supports near field communication.

Laser cover product information on the cover of the earphone box, such as WF-1000XM3 model, Sony, charging box, made in Malaysia, input 5V and other information.

Take the SONY Sony WF-1000XM3 to the dark, the working status of the indicator light is visible, and the earphones and the charging box are illuminated with a slight orange light.

Remove the charging box of the earphone, which can be seen with the color of the L and R ear tips, POP thimble, magnet. After the headset is placed back in the charging box, the internal magnetic design makes it easy to attach the earphone to the charging box and start charging.

Three POP thimbles are used to charge and communicate the headset.

The output of the charging box is 5V 120mA, which is used to supply power to the earphone when the charging box is not put into the charging box. When the earphone is not put into the charging box, the built-in battery of the charging box supplies the power to the earphone; it can be said that the electric charge is charged without knowing it.

The two headphones are symmetrical and have an external touch area. The SONY Sony WF-1000XM3 supports dual transmission and low latency. The newly developed Bluetooth chip transmits sound signals to the left and right headphone units simultaneously, reducing delays, providing a stable Bluetooth connection and a high quality listening experience.

The WF-1000XM3 has been greatly optimized for the wearing experience, making it more comfortable and firmer to wear. You can choose the right earbuds from the four pairs of long-mixed silicone earbuds and three pairs of triple-comfort earplugs that come with you to improve noise reduction and wearing comfort.

The earphones have left and right logos, and L and R correspond to the left and right ears, respectively, as well as bumps and colors to help distinguish.

3 charging contacts.

There is an opening on the front of the earphone, which is a noise reduction microphone, and the right side is a touch button. Tap or tap the touch panel on the headset unit with your fingertips to switch songs, adjust noise reduction mode, answer or hang up.

Blue indicator light.

Below the black area is the location of the sensor. In terms of wearing, the high-friction rubber surface ensures the comfort and the ear, and further enhances the wearing stability and is not easy to fall off.

After removing the silicone earplugs from the earphones, the dustproof mesh holes are visible to prevent foreign matter from entering the unit diaphragm.

A pressure relief hole located at the root of the earphone unit conduit.

The front and back of the earphones are equipped with dual feedback microphones to sensitively capture ambient noise in different frequency bands, such as aircraft noise, urban traffic noise, and office conversation. Dual feedback microphones, one on the back of the headset and one near the earbuds.

Silicone earphone cover.

The two headphones weigh 16.5g.

The single charging box weighs 75.2 grams.

The weight of the earphone and the charging box is 91.8 grams.

Second, Sony WF-1000XM3 dismantling

After unpacking, I love the audio network will enter the SONY Sony WF-1000XM3 disassembly, first from the charging box, and finally disassemble the headset.

The charging box is fixed by a combination of a buckle and a double-sided tape. The buckle is located on the upper edge of the charging box cover, and the double-sided tape is located at the bottom ends of the charging box.

There is a rib on the plastic frame and a lithium battery on the bottom.

The other side of the frame has no ribs for the board. The protection board has a USB Type-C interface, a cable connector, and the like.

The indicator light guides run through the front and rear of the charging box.

Remove the motherboard and battery located on the side and bottom of the charging case.

The inner frame of the charging box is composed of three parts, and the C cover is combined with the front and rear parts of the lower part.

Remove the C cover and see the charging contact subplate and the positioning magnet at both ends.

Three-pin charging contact with positioning magnet close-up. The sub-plate and the magnet are fixed by screws through the structural frame.

The contacts feature a gold-plated spring thimble with some protective components.

POP thimble close-up.

Detect the open Hall element.

Hall chip close-up.

Next, look at the circuit board inside the charging box. The positive and negative leads of the lithium battery are directly soldered to the circuit board.

The back USB Type-C connector is made of through-hole soldering, which is reliable and reliable.

The headphone charging box has a built-in 14500 lithium battery with a diameter of 14mm and a length of 50mm. The capacity is 700mAh/2.59Wh. The brand comes from Huizhou Haopeng Technology Co., Ltd. The charging cut-off voltage is 4.2V, and the red and black cables correspond to the positive and negative wires of the battery. Passed CQC, KCC certification.

The battery is coded and numbered C54837305571. The outer wall of the cell, the positive and negative electrodes are wrapped by insulating barley paper.

The protection chip on the battery ensures safety, and the chips here are processed by the dispensing process.

Input fuse and overvoltage protection tube.

Silkscreen CJZ is TI's TPS2553 for headphone charging current limit and short circuit protection.

TI TPS2553 is described in detail.

The small chip under the alloy inductor is the Maxim MAX8696, which is used to boost the built-in battery to charge the headphones.

US letter MAX8696 details.

The Maxim MX77734 ultra-low-power power management chip supports power path management and lithium battery charging as well as linear regulation.

US letter MX77734 details.

Sanmei regulator, powering the MCU.

Freescale microcontrollers for connection and charging box control, model MKL27Z64VFM4.

Freescale MKL27Z64VFM4 details.

The charging box is disassembled at a glance. The following is the teardown of the headset.

The top cover of the earphone is fixed with a buckle.

Inside the cover of the earphone, the upper large circle is the touch position, and the black foam in the middle is the noise reduction microphone pickup hole. In the middle of the headset is a dust-proof sticker that corresponds to the noise-reduction microphone.

The SONY Sony WF-1000XM3 uses a larger antenna, with a Bluetooth antenna around the black plastic frame. In the middle of the headset is a noise-reduction microphone, and the outside of the black plastic is a metalized Bluetooth antenna, which can effectively guarantee the signal quality.

A battery is fixed inside the antenna frame, and the metal piece extending from the side of the battery is a negative contact.

The layout of the two headphones is almost identical and symmetrical.

Noise reduction microphone close-up.

The battery inside the headset, which looks like a button battery, is actually a recyclable lithium battery.

SONY Sony WF-1000XM3 headset uses VARTA Valta CP1254 lithium battery, 3.7V 0.2Wh, Germany. Comparing with the coin, we can see that the battery is very small.

The gold contact, which is approximately circular in the center of the picture, is the negative contact of the battery, which is in contact with the extended metal sheet. On this circuit board are battery protection chips, Bluetooth receiver chips and indicator lights.

The approximate circular golden contacts in the figure are the positive contacts of the battery, which are in direct contact with the battery.

On the back of this circuit board is a charging terminal.

The headphone main control circuit is compared with the size of a dollar coin.

After the headphone disassembly, the internal structure, the circuit full picture.

Close-up of infrared distance sensor.

Headset FPC flexible circuit board close-up.

Headphone unit and noise reduction microphone. SONY Sony WF-1000XM3 ingeniously designed structure built-in 6mm driver unit, so that the mini-size headphones show rich details, clear and transparent, wide frequency range of good quality.

The silver bright chip processes the captured ambient noise for Sony's own HD noise reduction processor, QN1e.SONY Sony WF-1000XM3, to eliminate noise interference in various frequency bands. The processor integrates digital noise reduction, 24bit sound signal processor, digital analog converter and amplifier to achieve high signal-to-noise ratio (SNR) and low distortion shock sound effect.

Through Sony Headphones Connect APP, you can also manually adjust the noise reduction level (a total of 20 levels) through the application to open a personalized noise reduction experience.

Close-up of FPC base on headphones.

The chip named D 3781835 is SONY's own noise reduction chip.

Close-up of chip 310819078266C.

Close-up of the chip with screen printing number PK.

Screen print number E4MW chip close-up.

Headphone board has main control chip, memory, LED indicator, etc.

Below the charging terminal are three metal shrapnels corresponding to the upper terminals.

Battery protection chip.

Close-up of multi-color LED indicator.

The chip of screen printing number Q128FWY is memory chip.

Close-up of crystal oscillator and other components on the motherboard.

SONY Sony WF-1000XM3 uses MTK (Luda) MT2811 platform solution. This chip carries the double-channel Bluetooth transmission mechanism of MCSync TWS, supports the seamless connection experience of master-slave interchange, and supports Bluetooth 5.0, Ultra low power, Google Bisto voice assistant and other functions.

It is reported that MT2811 is a high-performance chip in Luoda AB155x platform series.

Inside the shield is MTK MT6388P power management chip.

These are the whole picture of SONY Sony WF-1000XM3 after disassembly. The whole headset is composed of dozens of components, not including many components on PCB circuit board. Thanks to the ingenious design of SONY engineers, each module is easy to fasten and assemble. After disassembly, the disassembly engineer of my favorite audio network can return to use without loss.

I Love Audio Network Summary

SONY Sony WF-1000XM3, whether industrial design or circuit design, embodies SONY's many innovations in TWS real wireless Bluetooth headset. Between cubic inches, both sound quality and noise reduction should be taken into account, as well as endurance. Before that, these three are just like fish and bear's paw.

I love the dismantling of SONY Sony WF-1000XM3 by audio network. Not only did I see SONY's latest noise reduction chip, but also MTK's TWS Bluetooth headset solution tailored for SONY for the first time.

Two years have passed since the first generation of "noise-reducing beans" was launched, and technology has also made breakthroughs. For example, the improvement of chip manufacturing, the popularization of Bluetooth 5.0, the maturity of dual-channel technology, etc., combined with SONY's unique noise reduction technology, the combination of software and hardware, technology and art, make the new generation of "noise-reducing beans" WF-1000XM3 come on the market.

Up to now, the SONY Sony Noise Reducing Headphone Family has covered the head-wearing, neck-hanging and the most difficult TWS in place. Whether SONY Sony WF-1000XM3 can become a classic like WH-1000XM3 and WI-1000X remains to be seen.

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