I uploaded a new video to my YouTube channel (Most relaxing sounds and videos), check it out below! Subwooferfrekvenstest (20-200 Hz).
Det typiska frekvensområdet för en subwoofer är mellan 20–200 Hz. Professionella konsertljudsystem subwoofers fungerar vanligtvis under 100 Hz, och THX-godkända system arbetar under 80 Hz.

If you like our work, please donate through Paypal link below any amount that you consider. We have expenses, like energy cost, software licenses, hardware maintenance and upgrade, travel to remote location to record video and audio, time, s.o. Thank you!
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For more great videos, please subscribe to this YouTube channel or our Facebook page: Relaxing and useful sounds, noises and videos (https://www.facebook.com/relaxingsoundsandvideos).