Loud battery powered speaker sound/bass test + dB test at 1m HD

One of loudest battery powered portable speakers for so good price! Biggest or Best ? ? ? Or just Big portable battery powered QTX QR15PA 15 inch PA speakers sound/music bass test + dB test at 1m distance with full frequency range sweep test tone. This QTX QR15PA 15" 100W Portable PA System speakers with Wireless microphones cost around 500$ pair. The sound more then good for this price, very good sound music dB SPL, about 110dB at 1m. Of course they are huge size, bad build quality and a lot of buttons. This can be one of Loudest Bluetooth portable Speakers. 15 inch 380mm speaker can give a lot of bass and sound pressure. Some alternative on market are MONACOR TXA-800, IBIZA PORT15, Alto Transport 12 , qtx qr12pa, qtx qr10pa, LD Systems Road Jack 10, Samson XP106, Behringer MPA100BT or from hi-fi home audio - jbl portable speaker - JBL Charge 3, JBL Xtreme or JBL Flip 4. QTX QT15pa speaker specification: - Power supply: 220Vac or 12Vdc 7.2AH nternal battery - Main driver: 38cm (15” inch) - HF unit: 2.5cm (1” inch) titanium compression driver - VHF mic frequencies: 174.1MHz + 175.0MHz - Output power: 50W + 50W (LF + HF) - Battery life: Up to 8 hours - Dimensions: 685 x 440 x 380mm - Weight: 18,4kg Instagram: https://www.instagram.com/arttursm/ [-] Hазвание видео RU: Большой Портативная акустика QTX QR15PA 15-дюймовый динамик с аккумулятор PA звуковой / музыкальный бас-тест - Для тех, кто любит потяжелее! [-] Video nosaukums LV: portatīvā bezvadu tumba - skanda QTX QR15PA ar bezvadu mikrofoniem - skaņas mūzikas un basa kvalitātes test ar skaļuma spiediena dB testu ------------------ (0) DIY guides: https://www.youtube.com/watch?v=MB0njxQm2fM&list=PLwiSkdgFgik7CvkMgw6pm4vm8iW2pZPYt (0) Headphones dB/SPL sound tests: https://www.youtube.com/watch?v=_rtax-9KXoE&list=PLwiSkdgFgik6nqlkYgtxoyUo2SdCKgOgI (0) Tests and some entertainments: https://www.youtube.com/watch?v=XbECmby8cug&list=PLwiSkdgFgik5vqneZAB0uaNMtYqd3_xLx (0) Unboxings: https://www.youtube.com/watch?v=O9AIEE8Pr8c&list=PLwiSkdgFgik4Ecs876nyqL50ruIW61VXp -------------------- My Production Equipment gear: - Canon 70d DSLR with Canon 17-55mm f/2.8 IS lens + 16gb SD card - Velbon Sherpa 200R photo tripod + Kingjoy VT-3510 Video Fluid Head - Stereo sound recorder Zoom H1 & Audio Technica AT2020 usb plus, Blue Yeti, Behringer Xm8500, Behringer B-1 XLR & DIY Binaural recording Dummy head - 2x light tripod & Lighting umbrellas + 4x CFL Bulb Studio Lights 5500K (2x45w +2x115w) + 4x50w LED spotlights - CN-160 Dimmable LED video lighting - Cheap Konig aluminium tripod, I use it for Zoom H1 recorder, binaural head, dB SPL meter or LED light - Sennheiser HD600 and AKG K321 headphones with Creative E-MU 0404 USB Audio interface (DAC/sound card/amp) - PC: i5 3470, 8gb RAM, 90gb SSD + 1Tb HDD + LG 23" IPS monitor and wireless Logitech keyboard with mouse. - Sony Vegas 13 video editing software Music: Jordan Schor - Cosmic (feat. Nathan Brumley) [NCS Release] - https://www.youtube.com/wat