Woofer Specification Sheet

Nominal power 50 W
Maximum power 100 W
Sensitivity 90 dB
Cone K2 Composite Sandwich
®
Surround Butyl
Nom. impedance 4 ohms
DC resistance 3.2 ohms
VC diameter 25 mm 0.98 in
VC height 8.5 mm 0.33 in
Former Kapton
®
Layers 2
Wire Copper
Inductance 0,26 mH
Xmax 2.5 mm 0.10 in
Magnet (d x h) --
Magnet weight --
Flux density 0.9 T
Gap height 3 mm 0.11 in
Net weight 0.35 kg 0.77 lb
4 K SLIM (100 KRS WOOFER KIT)
4’’K2 Power® woofer
Unit : mm
ø
ø
ø
ø
113,5
ø
ø
127
102
5
4,50
39
12
65
77
93
46
Load V (l) FB (Hz) F-3 (Hz) Q1
Sealed 30 - 120 7
• Extra slim 39 mmExtra slim 39 mm
• Zamak basketZamak basket
• Aluminium phase plugAluminium phase plug
• Neodymium magnetNeodymium magnet
Mechanical Drawing
Frequency response / Impedance
Suggested application
Fs 140.6 Hz
Vas 1.13 l
Qts 0.872
Qes 0.96
Qms 9.55
Re (in parallel) 3.2 ohms
Sd 55.42 cm
2
Cas 8.04E-09 m
5
/N
Mas 159.23 kg/m
4
Ras 14733.21 ohms.ac
Cms 2.62E-4 m/N
Mms 4.89 g
Rms 452 g/s
Ces 339.49 mF
Les 3.77 mH
Res 31.83 ohms
BI 3.8 N/A
SPL 87 dB/W/m
Specifi cations
Parameters
Focal® is a trademark of Focal-JMlab® - BP 374 - 108, rue de l’Avenir - 42353 La Talaudière cedex
France - Tel. [phone] - Fax [phone] - www.focal-fr.com - SCAZ071127/1
0°
30°
0° and 30° frequency response
110
100
90
80
70
60
50
40
30
20
10
100
95
90
85
80
75
70
65
60
55
50
20 100 1000 10 000
log Frequency - Hz
dB SPL
Ohms