Dolby 7.1 Surround Sound Test | Speaker Check | Pink Noise 4K

🔊 A 7.1 speaker check you can follow by eye: every channel is announced by name, then plays pink noise on its own – L, C, R, LFE, Ls, Rs, Bsl, Bsr. The 3D room lights up the speaker that should be sounding. 🔊 Start at low volume, then turn it up. 🔔 A new surround & 3D audio test every week → Subscribe:    / @0x0ndra   ━━━━━━━━━━━━━━━━━━━━━━ ⚠️ 𝗬𝗢𝗨𝗧𝗨𝗕𝗘 𝗣𝗟𝗔𝗬𝗦 𝗨𝗣 𝗧𝗢 𝟱.𝟭 ━━━━━━━━━━━━━━━━━━━━━━ This test is built from a discrete 7.1 master, but YouTube streams at most 6 channels. In this upload the back surrounds (Bsl, Bsr) are folded into the side surrounds: ✅ L, C, R, LFE, Ls, Rs – exactly as labelled ↪️ Bsl / Bsr – from your left / right surround speakers (same as Ls / Rs) On YouTube it shows the 7.1 layout and checks your 5.1 routing – it cannot prove your back speakers are wired correctly. ⬇️ Full 7.1 files with 8 discrete channels (free download): MKV, 7.1 FLAC 24-bit (0.8 GB): https://avtestlab-dl.ondra-vlasek.wor... MP4, 7.1 AAC (0.8 GB): https://avtestlab-dl.ondra-vlasek.wor... WAV audio master, 8 ch 48 kHz 24-bit (0.3 GB): https://avtestlab-dl.ondra-vlasek.wor... ━━━━━━━━━━━━━━━━━━━━━━ 🎛 𝗛𝗢𝗪 𝗧𝗢 𝗨𝗦𝗘 ━━━━━━━━━━━━━━━━━━━━━━ 1️⃣ Play it in the YouTube app on a TV, streaming box or console connected to your receiver or soundbar (HDMI / eARC). ✅ 5.1 works on most smart TVs (2021+), Chromecast, Apple TV, Roku, Fire TV, Xbox, PS5 ⚠️ Browsers and phones play stereo only 2️⃣ In the player settings turn on "5.1 surround sound" (if offered). 3️⃣ Start LOW, then raise the volume – pink noise is loud on purpose. 4️⃣ Sit in your main seat and point at the speaker you hear – it must match the name on screen. ━━━━━━━━━━━━━━━━━━━━━━ 👂 𝗪𝗛𝗔𝗧 𝗧𝗢 𝗟𝗜𝗦𝗧𝗘𝗡 𝗙𝗢𝗥 ━━━━━━━━━━━━━━━━━━━━━━ 🔀 Wrong speaker → swapped cables or wrong speaker assignment in the receiver 🔇 Silence → speaker set to "None/Off", disconnected or channel not assigned 📢 Several speakers at once → stereo / upmix mode – switch to Direct or Straight 📉 One channel quieter or duller → level trim, distance setting or speaker aim (compare L vs R, Ls vs Rs) 🔈 LFE → only the subwoofer should play. On phones and laptops it is almost silent – that is normal ━━━━━━━━━━━━━━━━━━━━━━ 📏 𝗟𝗘𝗩𝗘𝗟𝗦 ━━━━━━━━━━━━━━━━━━━━━━ All channels: pink noise −20 dBFS RMS (mains 80 Hz–12 kHz, LFE 30–120 Hz). Playback adds +10 dB to the LFE, so the sub is meant to sound strong. YouTube's codec and loudness normalisation make this an identification and balance check, not an SPL calibration. ━━━━━━━━━━━━━━━━━━━━━━ ⏱ 𝗖𝗛𝗔𝗣𝗧𝗘𝗥𝗦 ━━━━━━━━━━━━━━━━━━━━━━ 0:00 Intro + Pass 1 front: L C R LFE 0:32 Pass 1 surround: Ls Rs Bsl Bsr 0:56 Pass 2 front: L C R LFE 1:20 Pass 2 surround: Ls Rs Bsl Bsr 1:44 Pass 3 front: L C R LFE 2:08 Pass 3 surround: Ls Rs Bsl Bsr 2:32 Pass 4 front: L C R LFE 2:56 Pass 4 surround: Ls Rs Bsl Bsr 3:20 Pass 5 front: L C R LFE 3:44 Pass 5 surround: Ls Rs Bsl Bsr ━━━━━━━━━━━━━━━━━━━━━━ ▶ 𝗠𝗢𝗥𝗘 𝗧𝗘𝗦𝗧𝗦 ━━━━━━━━━━━━━━━━━━━━━━ 5.1 version (every channel plays exactly as labelled on YouTube):    • Dolby 5.1 Surround Sound Test | Speaker Ch...   🎬 Cinema version: a SMPTE DCP of this 7.1 test with discrete Bsl/Bsr exists for digital cinema servers → https://www.xctech.cz/en/nastroje/tes... ━━━━━━━━━━━━━━━━━━━━━━ 🔥 𝗠𝗢𝗥𝗘 𝗙𝗥𝗢𝗠 𝗔𝗩 𝗧𝗘𝗦𝗧 𝗟𝗔𝗕 ━━━━━━━━━━━━━━━━━━━━━━ 🔊 5.1 version →    • Dolby 5.1 Surround Sound Test | Speaker Ch...   🎵 7.1 Music Experience (10 Worlds) →    • Dolby 7.1 Surround Sound Test | Music Expe...   🌌 5.1 Surround Demo – From a Drop to the Galaxy →    • Dolby Atmos 5.1 Surround Sound Demo | From...   📺 8K HDR Wildlife OLED Demo with 5.1 →    • 8K HDR Wildlife | OLED TV Demo with Dolby ...   ▶ All speaker tests →    • Channel Check – Surround Speaker Tests   🔔 Subscribe →    / @0x0ndra   ━━━━━━━━━━━━━━━━━━━━━━ 👤 𝗖𝗥𝗘𝗗𝗜𝗧𝗦 ━━━━━━━━━━━━━━━━━━━━━━ AV Test Lab by 0x0ndra · Concept, sound design, mix & edit XC tech · https://www.xctech.cz 🇨🇿 Test 7.1 reproduktorů: každý kanál se ohlásí jménem a pak hraje růžový šum. YouTube přehraje nejvýš 5.1, proto zadní kanály Bsl/Bsr uslyšíte z levého/pravého surroundu (stejně jako Ls/Rs). Pusťte video v aplikaci YouTube na TV připojené k receiveru, začněte potichu a zkontrolujte, že hraje vždy jen reproduktor, jehož jméno je na obrazovce. Autor: 0x0ndra. #7point1 #SpeakerTest #HomeTheater