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Frame material
Cone & dome material
Surround
Spiders
Coil size & type
Winding spec
Magnet (D1 x D2 x H)
Magnet weight
Gap flux density
Top plate thickness
Optimum working range
Venting
TThhiieellee SSmmaallll ppaarraammeetteerrss
Effective cone diameter
Re
Fs
Qms
Qes
Qts
Mms
Cms
Vas
BL
Aluminium/Steel
Woven carbon fibres
s r b p Single roll
Single
38mm Aluminium
2 layer round cu x 15mm
115 x 56 x 20 ferrite
760gm
1.1T
6mm
25Hz – 500Hz
Coil, pole
200mm
8Ω
39Hz
3.12
1.08
0.8
38gm
0.43mm/N
59L
8.38f/m
250mm 10” 200mm 8” 170mm 6.5”
Aluminium/Steel
Woven carbon fibres
s r b p Single roll
Single
38mm Aluminium
2 layer round cu x 10mm
115 x 56 x 20 ferrite
760gm
1.1 T
6mm
25Hz–800Hz
Coil, pole
165mm
4.5Ω
39Hz
2.31
0.57
0.45
29gm
0.55mm/N
34L
7.64t/m
Aluminium/Steel
Woven carbon fibres
s r b p Single roll
Single
25mm Aluminium
2 layer round cu x 11mm
80 x 32 x 15 ferrite
300gm
0.77 T
6mm
40Hz–1000Hz
Coil, pole
140mm
15.5Ω
54Hz
3.33
1.35
0.96
17gm
0.49mm/N
16L
8.26