Tang-Band has a full range 4" driver made from bamboo coming out in May.
Qms = 1.499
Qes = 0.484
Qts = 0.366
BL = 4.80
Mms = 3.49 g
Compared to their W4-655sa 4" paper driver:
Qms = 4.35
Qes = 0.35
Qts = 0.33
Electrical Q being more important to damp than mechanical Q. But TB's typical paper Qms is no lower than 2.80. So the bamboo damps very well indeed.
Qms = 1.499
Qes = 0.484
Qts = 0.366
BL = 4.80
Mms = 3.49 g
Compared to their W4-655sa 4" paper driver:
Qms = 4.35
Qes = 0.35
Qts = 0.33
Electrical Q being more important to damp than mechanical Q. But TB's typical paper Qms is no lower than 2.80. So the bamboo damps very well indeed.