|
|
|
|
MICA
ACOUSTIC DIAPHRAGM
The
mica speaker diaphragm is a product which has a favorable sharpness of
resonance curve with a high specific Young's modulus and superior weather
resistance.
We
are the first in the world to develop the mica acoustic diaphragm for
loudspeakers, since then, the mica diaphragm has been used in numerous
loudspeakers including cones, coupling cones,skin for flat-shaped loudspeakers
and voice coil bobbins. A flat-shaped foamed mica acoustic diaphragm has
also been developed for flat shaped loudspeakers.
MICA
ACOUSTIC DIAPHRAGM
Symbol
|
Composition
|
Construction
and main Uses
|
Thickness
(mm)
|
Density
P(g/cm2)
|
Young's
modulus E(N/m2)
|
Speed
of
Sound
|
Mica
|
Binder
|
S6EI-K
|
Muscovite
mica paper
|
Epoxy
|
Cone-shaped
mica diaphragm
|
0.03~0.3
|
1.70
|
6.5~7.0
X 1010
|
6,100
~ 6,400
|
S6EI-P
|
Skin
for honeycomb structure flat shaped diaphragm
|
0.02-0.2
|
S6E-P
|
C6E-K
|
Cone-shaped
coupling mica cone
|
0.05<
|
B6E-CR
|
Curled
mica for voice coil bobbin
|
0.05~0.13
|
S2FI-K
|
PVA,
SBR
|
Cone-shaped
foamed mica diaphragm
|
0.1~2.0
|
0.12
|
1.4~2.2
X 109
|
3,400
~ 4,200
|
S2FI-P
|
Flat-shaped
foamed mica diaphragm for flat-shaped loudspeaker
|
0.1~4.0
|
S2F-P
|
|
|
|
|
|