Sony's HT-Z9F wireless home audio system is an important flagship product launched by Sony in recent years, consisting of Soundbar echo wall + subwoofer, with extraordinary sound quality effect, highly respected by audiophiles. Recently, some media exposed its interior through disassembly, the core component chips have been made public, and behind the excellent product performance, these chips have played a key technical support.
1) Stable drive WiFi module, accurate reception and analysis of air interface data.
2) Support TCP/IP protocol to receive combined audio packets.
3) Efficient decoding of audio packets to ensure bass surround effect.
4) Support synchronous air interface time, play audio by timestamp, wireless connection without delay.
5) Support OTA.
2. Subwoofer main control chip: Sony D3776ER is the main control chip of HT-Z9F subwoofer.
3. Power amplifier: Texas Instruments TAS5624A heat dissipation enhanced Class D power amplifier, with 150W stereo, 400W mono, reduce the volume of the radiator by using 40mΩ output MOSFET, and the efficiency is greater than 90% at full output power. Using a constant voltage gain, the TAS5624A features a self-protecting design with error reporting that includes undervoltage protection, overtemperature protection, and short-circuit protection.
Disassembling the subwoofer's audio motherboard revealed that the Sony HT-Z9F selected several of the most powerful chips at present. Among them, Rockchip provides key technical support for Sony's home audio system, RKNanoD as the control chip of the WIFI module in the subwoofer box, to ensure the stability of the wireless connection between the speaker and the echo wall, users can place different positions according to home needs, reduce the distance and location restrictions, so that users can enjoy the immersive sound experience of the home audio system, enjoy the live version of the surround sound effects.
(This article disassembles the content of the report and the picture comes from I Love Audio Network)
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