“What is the codec and the bit rate the rear speakers and the sound bar use to stream the two rear channels? Is the bit rate higher in, say, S80TR using WiFi?”
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Hi there, Kot. We understand your inquiry about the wireless codec and bit rate for your LG S70TR’s rear speakers and sound bar streaming two rear channels. Your S70TR uses LG’s proprietary 2.4 GHz wireless digital link to transmit uncompressed PCM audio to the rear modules and subwoofer. While LG doesn’t publish an exact “bit rate” figure, this link supports full‑bandwidth, high‑resolution audio (up to 24‑bit/48 kHz), which equates to roughly 2–3 Mbps of data per channel. Regarding the S80TR, it leverages your home Wi‑Fi network (2.4 GHz/5 GHz) for rear‑speaker transmission. Although the underlying audio codec remains PCM for maximum compatibility and latency control, the available Wi‑Fi bandwidth can allow slightly higher throughput—helpful in challenging RF environments—but LG does not specify a higher formal “bit rate” in its materials. Both models are optimized for reliable, low‑latency delivery rather than adjustable bit‑rate streaming. A quick troubleshooting step: if you ever notice audio drop‑outs or sync issues, please ensure your sound bar’s firmware is up to date. From your remote, go to Home > Settings > General > About This Sound Bar > Software Update to check. Also confirm the rear modules are within 20 ft of the bar and avoid obstructions like large metal objects. https://www.bestbuy.com/site/lg-5-1-1-channel-s70tr-home-theater-soundbar-with-wireless-subwoofer-and-rear-speakers-dolby-atmos-wow-orchestra-black/6578017.p?skuId=6578017 If you’d like more details or run into any issues, please send us a private message on Social Media @LGUSSupport and our team will be more than happy to explore possible solutions. We appreciate your patience and thank you for choosing LG! —Renzo
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