Loudest vocal bass note
Who
Alpaslan Durmuş
Where
Turkey (Istanbul)
When

The loudest vocal bass note is 117 dB(C) and was achieved by Alpaslan Durmuş (Turkey), at the Kipdaş Mühendislik, Instanbul, Turkey, on 29 February 2016.

The measurement was taken from a distance of 2.5 metres and the note was required to be an A2 or lower.