Check Your System For Rattles Low Frequency Generator Sub Woofer Tester

Got any rattles in your audio system, or just curious what the resonance frequency of your bedroom windows is?
Or do you want to test that (sub-)woofer you got?
Then this clip will help you out !
Starting at 20 Hz for five seconds,
and then increasing with only one Hertz every five seconds, up till 100 Hertz,
this generator will rattle your room like nothing ever before !

NOTE: these frequencies may be to low for your smartphone or tablet.
If you don't hear any sound, please try to reload the clip in the highest possible resolution your device is capable of, since sound quality is better on full HD video.

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P.S: want an more dynamic rattle /(sub-)woofer tester?
Then please view my other clip: https://youtu.be/p47FJ0qx7Cw

Видео Check Your System For Rattles Low Frequency Generator Sub Woofer Tester канала Paul D.