30 A1 DB
3 0 c m ( 1 2 ’ ’ ) A c c e s s 1 s u b w o o f e r
• All weather woven glass fiber cone
• 65 mm/4 layer voice coil
• Voice coil cooling system
• Dual voice coil (2x4Ω)
Specifications
Nominal power 250 W
Maximum power 500 W
Sensitivity
Cone
91 dB
Braided glass fiber
Butyl
Surround
Nom. impedance 2 x 4 ohms
DC resistance
(in parallel)
1.69 ohms
VC diameter
VC height
Former
65 mm
18 mm
Kapton®
4
2-9/16 in
11-16 in
Layers
Wire
Copper
0.68 mH
5 mm
Inductance
Xmax
3-16 in
Magnet (d x h)
145 x 20 mm
5-11/16x13/16in
2.45 Ib
Magnet weight 1.15 kg
Flux density
Gap height
Net weight
0.8 T
8 mm
4.8 kg
5/16 in
10.58 Ib
Parameters
Fs
29.5 Hz
Vas
66.32 I
Qts
0.52
Qes
Qms
Re (in parallel)
Sd
0.55
Suggested Application
7.87
1.69 ohms
510.71 cm2
9.03E-07 m5/N
32.24 kg/m4
759.42 ohms.ac
1.81E-04 m/N
161.11 g
Sealed enclosure
35 litres (1.24 cu. ft.)
F - 3 = 42Hz / Dynamic bass
Cas
25 litres ( 0.88 cu. ft.)
40 liters (1.41 cu. ft.)
Mas
Ras
F - 3 = 44Hz / Fast and tight bass
F - 3 = 41Hz / Deep and articulate bass
+5
Cms
Mms
Rms
Ces
0
3.794 kg/s
1755.8 mF
16.58 mH
24.18 ohms
9.58 N/A
-5
Les
Res
-10
-15
BI
SPL
86.7 dB/W/m
(1.236 cu. ft.)
Suggested application
Load
V (l)
25
F-3(Hz)
44
Ql
7
20
50
Frequency (Hz)
100
150
200
Sealed
Sealed
Sealed
35
42
7
40
41
7
Mechanical Drawing
Ø 323
Ø 170
Ø 275
Unit : mm
Focal® is a trademark of Focal-JMlab® - BP 374 - 108, rue de l’Avenir - 42353 La Talaudière cedex
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