calibrate your sound system here
you need to tweak the volume of your speakers / headphones before listening to the website's sounds. Be aware that sounds played at high volumes may damage your hearing and/or your equipment.
1. set your listening equipment volume to its lowest point ( = no sound)
2. play this sample (it is a 1KHz tone @ -0,1dBFS)
3. progressively raise the volume until the desired level