Accuton BD20-6-031

BD20-6-031 is a diamond dome tweeter, which was made by Accuton (Germany) company in a custom housing for the loudspeaker manufacturer  Kharma (Netherland) to be used in their top line loudspeakers at that time (around 2008 year) - Kharma Exquisite Grand (The Absolute Sound's review), those retail price tag was near $300000.

Today (2019) Kharma company is continuing produce that loudspeaker model, but now with upgraded speaker drivers - Omega with Carbon-Rohacell-Carbon cones.

It's always interesting to see what speakers are used in the world's top loudspeakers!

The THD measurements at distance of 315 mm and voltage levels from 2.83 Volt to 8 Volt were carried out with High Pass Filter "on" (2nd order Butterworth type, 800 Hz cutoff, HPF2-800)

The tweeter sounds very good but at the retail price about $1900/piece it must have more even frequency response, higher sensitivity and preferably should have the voice coil former made of non-aluminium material and don't have ferrofluid in the magnet gap. So, my rank is only "3"