This may not help much, but you can see and hear Baba play his big
daddy ashiko/ngoma at
http://www.olatunjimusic.com/see.html .
His is bolt tuned rather than rope-tuned, but what I noticed about it
was that the drum is VERY low-tuned - between a djun and a djembe.
-Greg
Raleigh Drum Circle
http://groups.yahoo.com/group/raleighdrumcircle/