JBL TUNE Beam won the 2023 Reddot Design Award for appearance. The earbud is equipped with a 6mm dynamic driver and are tuned by HARMAN acoustic experts. Supports digital active noise cancellation, environment awareness and free call functions to meet noise cancellation needs in multiple scenarios. It supports intelligent radio and voice perception, ensuring clear calls while being able to listen to your own call voice and make timely adjustments.
JBL TUNE Beam supports Bluetooth 5.3 and two-way synchronous transmission to ensure a stable connection. The system’s ultra-low latency brings a synchronized audio and video listening experience to games and videos. Through the JBL HEADPHONES APP, you can perform multi-function settings, EQ adjustment, find headphones, etc. The earbuds have a single battery life of up to 12 hours, and the comprehensive battery life of 48 hours. It support fast charging function, charging for 15 minutes, you can listen to music for 4 hours.
We have previously teardown the JBL products including: JBL TUNE 130NC, JBL LIVE PRO, JBL WAVE FLEX, JBL FLASH, JBL TUNE 225, JBL FREE II, JBL Free, JBL Quantum 360P, JBL LIVE660NC, JBL KMC300, JBL PULSE 5, JBL FLIP ESSENTIAL 2, JBL CLIP4, JBL CHARGE 4 and JBL FLIP 5 etc. Let’s take a look at the teardown report of JBL TUNE Beam.
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$98 – JBL TUNE Beam Review
01/ JBL TUNE Beam Charging Case Teardown
Disassemble the transparent shell and take out the charging bin. The charging bin is equipped with a motherboard, a small board for charging earbuds, an indicator light for FPC connection, and a small Hall element board. The battery is set on the back.
Remove all components from the charging bin.
The bottom structure of the charging bin is equipped with four magnets to absorb and fix the charging case cover and earbuds.
The charging case has a built-in rechargeable lithium-ion battery pack, model number: 981642, nominal voltage: 3.7V, rated capacity: 750mAh 2.775Wh, charging limit voltage: 4.2V, made in China.
Tear off the external insulation protection of the battery, and the silk screen information on the battery core is consistent with the external label.
The circuit on one side of the battery protection board.
Silk screen 2v 6B integrated lithium battery protection IC, responsible for battery overcharge, overdischarge, overcurrent and other protection.
The circuit on the side of the charging case motherboard.
The circuit on the other side of the charging case motherboard.
ZIF connector to connect small board FPC.
LY ICP1106 power management chip integrates switch charging, Boost synchronous boosting, power path management, independent plug-in and pull-out detection of both ears, two-way communication, OVP, OCP protection and other functions. It has the characteristics of powerful performance, high integration, and simple peripheral circuits.
The charging voltage, charging current, and output voltage of ICP1106 can be flexibly configured through I2C, which can easily realize TWS fast charging. It supports both power line carrier two-way communication and UART two-way communication, which can reliably meet the information interaction needs of charging cases and earbuds and achieve intelligent control. Supports transport mode, and the standby power consumption can be as low as 1uA. Supports 0V, 2.4V, battery voltage and other voltage output standby modes.
Power inductor peripheral to the power management chip.
Chipsea CSU38F20 microcontroller is an 8-bit wide voltage Flash MCU with LED driver and 12-bit ADC; built-in 16K bytes Flash program memory, integrated 8COM×7SEG LED driver, UART interface, and I2C interface.
The charging case is a small board circuit for earbuds.
The indicator light and Hall element small board circuit is equipped with three LED indicators for feedback of remaining power information.
The hall element of silk screen AP301 is used to sense the charging bin status and then notify the charging case MCU and earbuds to pair or disconnect with the connected device.
02/ JBL TUNE Beam Earbuds Teardown
Disassemble the earbud cavity and take out the battery.
Internal structure of the front cavity.
Transparent back cavity internal structure.
The earbud has a built-in soft-packed button battery, which is protected by transparent insulating glue.
Remove the back cover of the earbud stem and take out all the internal components.
The inner structure of the earbud stem cover is printed with bluetooth antennas and touch detection electrodes, and an indicator light hood is set at the tail.
The front of the earbud speaker.
On the back of the speaker, there is a tuning hole in the center.
After actual measurement, the speaker size is approximately 5.41mm.
The circuit on one side of the earbud motherboard.
The circuit on the other side of the earbud motherboard.
The MEMS microphone of laser engraving 3114 1371 is used for voice calls and noise cancellation function.
LY ICP1205 is a linear charging IC that supports two-way power line communication. It is an analog front-end designed for the TWS earbuds system. ICP1205 integrates programmable linear charging, power path management, carrier and transparent communication, headset transport mode and other functions, and has extremely low operating power consumption and standby function. The chip supports multiple complete protection functions, and supports bluetooth master control firmware upgrade and data transmission functions.
ICP1205 is paired with ICP1106 to support efficient charging mode. The chain case output voltage can be adjusted according to the headphone battery voltage, improving the chain case battery capacity conversion rate by about 20%.
BES BES2600Z bluetooth audio SoC, which integrates dual-core ARM Cortex-M4F CPU and ultra-low power Sensor Hub subsystem, has powerful application processing capabilities. Supports Bluetooth 5.3, hybrid ANC and AI call noise cancellation, providing stable wireless connection and rich functions for earbuds.
The crystal oscillator that provides the clock for the bluetooth chip.
Silk screen 2v lithium battery protection IC.
Silk screen 8P223D touch detection IC for touch control function.
There is also a laser-engraved 3114 1371 MEMS microphone, two microphone beam forming, and a noise cancellation algorithm, providing immersive audio and clear call effects.
Two LED indicators of different colors used to feedback bluetooth pairing and charging status.
The metal dome that connects the bluetooth antenna and touch detection electrodes.
Connect the metal connector to the charging case to charge the earbuds.
All components of JBL TUNE Beam true wireless noise cancellation earphones.
03/ Summary
JBL TUNE Beam charging case adopts the transparent shell design, which has excellent texture and smooth feel. The internal charging bin and the circuit board use the same color scheme, making them perfectly integrated and better showing off the internal precision components. The earbuds are also designed with a transparent cavity, but the sound cavity uses a frosted cover and an ergonomic design, making it comfortable and stable to wear.
The charging case has a built-in 750mAh rechargeable lithium-ion battery pack. The power management uses the LY ICP1106 chip, which integrates switch charging, Boost synchronous boosting, independent detection, two-way communication, OVP, OCP protection, transportation mode and other functions. The overall control is handled by Chipsea CSU38F20 microcontroller.
The earbud has built-in 6mm dynamic driver and soft-pack button battery. It is equipped with two MEMS microphones to pick up sound, and uses LY ICP1205 linear charging IC to charge the built-in battery. Paired with the ICP1106 chip inside the charging case, it supports efficient charging mode and can increase the battery capacity conversion rate by about 20%. The main control chip is BES BES2600Z bluetooth audio SoC, which supports Bluetooth 5.3 and AI call noise cancellation, and has powerful application processing capabilities.
PS: Translated from 52audio
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