Soundcore is an audio brand under Anker. With the rapid development of the TWS headset market, Soundcore has continued to launch multiple series of products. Recently, the latest generation of Soundcore Liberty 3 Pro equipped with ACAA 2.0 coaxial dual driver technology was released. And what will be disassembled for everyone today is the Soundcore Life P3 true wireless noise cancelling earbuds.
Soundcore Life P3 has a variety of personalized and fashionable colors in appearance design, and the overall look and feel is more lively and more youthful. In configuration, it adopts 11mm dynamic unit and wool paper bio-fiber composite diaphragm. Support three-dimensional deep active noise reduction/dual transparency mode, with multiple application scenarios for commuting, outdoor, and indoor, with a maximum noise reduction depth of 35dB. Support 6-microphone anti-wind call noise reduction, provide clear voice call effect.
In other respects, the game mode can effectively reduce latency and improve sound performance. Built-in 22 kinds of EQ preset sound effects, support custom adjustment, and white noise DIY, headphone loss search, IPX5 waterproof, etc. In terms of charging battery life, it supports fast charging and wireless charging, with 7 hours of single battery life and 35 hours of overall battery life.
The Soundcore headphones teardown by 52audio are: Soundcore Liberty Air 2 Pro, Soundcore Life Dot 2, Soundcore Liberty 2 Pro, Soundcore Liberty Air 2, Soundcore LIBERTY AIR and Soundcore Spirit Pro sports waterproof bluetooth headphone. Let’s take a look at the internal structure of this product.
|1. Soundcore Life P3 Charging case teardown
From the unpacking part, we learned about the overall design of this product. Let’s enter the disassembly part to see the internal structure configuration information.
Pry open the charging case cockpit.
Inside structure of charging case shell.
The charging case indicator light guide is sealed in a black structure to prevent light leakage.
In the bottom structure of the charging case cockpit, the wireless charging receiving coil is fixed on the bracket, which is isolated from the lower components and plays a protective role.
Remove the screws and remove the cover.
Remove the main components in the charging case, the bottom structure of the cockpit, use four magnets to absorb the charging case cover and earphones.
The front of the main components in the charging case.
The back of the main components in the charging case.
The wireless charging coil is fixed on the magnetic barrier sticker.
The main board side circuit in the charging case.
The circuit on the other side of the motherboard in the charging case.
Type-C power input board.
Silkscreen 3039GQ IC.
The pogo pin connector on the motherboard for charging the earphones has an oval magnet in the middle, which is used to fix the earphones.
ETA ETA1061 1A synchronous boost converter with ultra-low standby power consumption, used to boost the output of the built-in battery to charge the earphones.
Sinhmicro SS881Q-W, a low-power MCU chip with integrated wireless charging RX controller, uses a QFN 4×4 package to save space, and can be widely used in various smart hardware devices with wireless charging reception and battery charging and discharging management.
SS881X-W series built-in wireless charging RX end compatible with Qi protocol communication source coding module and wireless charging power adaptive control module (support Qi certification), as well as linear charging unit and power management unit, at the same time has a wealth of interface functions, flexible The configuration mode, and different low-power options.
According to 52audio, many TWS headset charging cases including Xiaomi, OPPO, 1MORE, Edifier, Redmi, ZMI, realme, FIIL, Anker, Lenovo, LINNER, Astrotec, Nubia, Razer, HTC, etc. A large number of Sinhmicro solutions have been adopted.
Prisemi P14C1N overvoltage and overcurrent protection IC, withstand voltage up to 32V, overvoltage is fixed at 6V. The external resistance of the overcurrent protection point is adjustable, the overcurrent response time is externally adjustable, and the overcurrent protection accuracy is 10ma, which can meet the overcurrent protection requirements of various adapters and various projects.
Three LED indicators.
A cylindrical lithium-ion soft-pack battery is used in the charging case, model: VDL13450PN3, capacity 800mAh/2.976Wh, rated voltage: 3.72V, factory date: June 16, 2021, from VDL. The battery is equipped with a small circuit protection board with temperature protection function.
|2. Soundcore Life P3 earphones teardown
Enter the earphone disassembly part, pry open the earphone cavity along the mold-clamping line, and there is a cable connection between the front and rear cavity components.
The components in the front cavity, the dynamic speaker is fixed on the shell by red glue, and a cable extends to the bottom of the speaker.
The structure in the back cavity of the earphone is entirely covered by the FPC board and fixed by heat fusion with a plastic column.
The headset uses a soft-pack button battery, model: M1254A5, capacity: 63mAh/0.243Wh, rated voltage: 3.85V, and the headset uses a high-voltage battery to provide longer-lasting battery life.
An isolation plate is arranged at the bottom of the rear cavity to separate the battery and the main board unit. The assembly cable in the headphone head is connected to the main board unit through the BTB.
Open the speaker, the internal structure of the cavity, the built-in microphone is covered by a metal plate.
The internal components of the front cavity, including a speaker and a MEMS microphone.
A layer of wool fiber is attached to the front of the speaker to enhance the mid-bass effect.
The silkscreen model number on the T iron on the back of the speaker: 214251.
After actual measurement, the speaker unit size is about 11mm.
Laser carving 14V48 MEMS noise reduction microphone is used to pick up the internal noise of the ear canal.
The internal structure of the front cavity.
Pry open the back cover of the headset.
The cover adopts a double-layer structure, and the inside is a touch detection patch and a bluetooth antenna.
Take out the main board, the internal structure of the earphone handle, a circular heat dissipation hole is set in the middle position, and the earphone magnet is covered with a sponge pad for protection.
Circuit on the motherboard side.
Circuit on the other side of the motherboard.
Laser carving 14F13 MEMS microphone is used for voice call pickup.
Pogo pin connector that connects the touch detection sensor and the bluetooth antenna.
The crystal oscillator of the laser carving T260 PE68 provides the clock for the bluetooth chip.
The integrated battery protection IC of the silk screen 1PAc.
Noise-reducing microphone dust-proof net structure on the motherboard.
Laser carving 14K08’s MEMS noise reduction microphone picks up external environmental noise and is used to mix active noise reduction and call noise reduction functions.
BES BES2300YP bluetooth audio SoC, BES2300 has multiple versions and different configurations with different suffixes. Both BES2300Y/YP models support active noise reduction.
The BES2300 series is a fully integrated adaptive active noise reduction solution that supports bluetooth 5.0, IBRT bluetooth monitoring technology and dual-mode bluetooth 4.2. It also supports the third generation of FWS full wireless stereo technology, dual microphones, etc., using 28nm HKMG CMOS process, BGA package . BES2300 supports high-performance adaptive active noise reduction technology, which allows high-end active noise reduction headphones to use a fully integrated chip to achieve high sound quality and active noise reduction.
In addition, BES2300 also supports external heart rate sensors, acceleration sensors and other external sensor devices. BES2300 can output sound to headphones and home audio, and can also record from an external microphone.
According to 52audio, true wireless headsets from brands such as Samsung, Xiaomi, OPPO, JBL, 1MORE, Honor, Baidu, OnePlus, and Transsion have adopted BES bluetooth audio solutions.
The IC of silk screen H7.
TPS SY5500 bluetooth headset charging and communication solution. SY5500 is a chip specially designed for TWS earphones, providing a perfect solution for charging and isolating communication. The chip integrates linear charging management, discharge protection, (charging case and headset) single-wire two-way data communication and I2C communication interface, which is convenient for users to realize headset charging and discharging management and protocol communication.
According to 52audio, the TPS power management chip has been adopted by many well-known brands such as OnePlus, Bull, Marshall, Soundcore, JBL , OPPO, Xiaomi, Baidu, 1MORE, 233621, Transsion, Sabbat, Creative and so on.
The touch detection IC of the silk screen LWT4.
The metal copper pillars on the motherboard that charge the earphones are sealed with a foam ring to prevent moisture and dust from entering the earphones.
The motherboards in the two earphones are in different colors, which is easy to distinguish when assembling.
All components of Soundcore Life P3 true wireless noise-canceling earbuds.
Soundcore Life P3 true wireless noise-cancelling headphones are designed with a matte texture and a comfortable touch and skin-friendly charging case. The charging case cover provides a comfortable opening feel and a stable closing effect through springs and magnets. The handle-shaped in-ear earphone has a unique headphone handle design, showing a multi-layered structure, with a strong sense of texture and recognition.
In terms of internal circuit, the charging case has a built-in 800mAh lithium battery from VDL, which supports both wired and wireless input power. SinhMicro SS881Q-W integrated wireless charging RX controller low-power MCU single chip is responsible for the two methods are built-in batteries Charge. The Prisemi 14C1N chip provides overvoltage protection. ETA ETA1061 voltage converter, used to boost the output of the built-in battery to charge the earphones.
In the Soundcore Life P3 earphone part, the internal components are all connected through BTB connectors. The headphone head uses an 11mm dynamic driver, a 63mAh high-voltage soft-pack button battery, and three MEMS microphones for active noise reduction and voice call functions. On the motherboard, the BES BES2300YP bluetooth audio SoC is adopted, which supports high-performance adaptive active noise reduction technology, and can use a fully integrated chip to achieve high sound quality and active noise reduction. The TPS SY5500 bluetooth headset charging and communication solution provides charging and discharging management and data communication for the headset.
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How did you do this teardown, getting the case apart?
Can you please share the step by step video or picture on how to do the teardown?
I’m not sure how to open the charging case.
I’m having a problem with bad contact on the left earbud and I’d like to open the charding case to do some tests