Focal 40 KX User Manual

40 KX

400 mm K2 Power® subwoofer

Multiferrites magnet

•

• Zamak basket

• For closed box

• High power handling

• Dual voice coil

Suggested Application

Sealed enclosure

40 liters (1.41 cu. ft.)
F - 3 = 41Hz / Fast and tight bass

SPL (dB) 1W/1m

Frequency (Hz)

Mechanical Drawing

ø 390

8xø 6,50

11

©Focal-JMlab - SC030519/1

60 liters (2.19 cu. ft.)
F - 3 = 37Hz / Punchy and dynamic bass

80 liters (2.82 cu. ft.)
F - 3 = 36Hz / Deep and articulate bass

ø 407

ø 198
ø 351

7,60

18

206

62

Unit : mm

Specifi cations

Nominal power
Maximum power
Sensitivity
Cone
Surround
Nom. impedance
DC resistance
VC diameter
VC height
Former
Layers
Wire
Inductance
Xmax
Magnet d x h (18)
Magnet weight
Flux density
Gap height
Net weight

500 W
1000 W

92.5 dB
K2 Composite Sandwich
Butyl
4 ohms (2 x 2)

4.2 ohms (2 x 2.1)
65 mm 2.55 in
32 mm 1.25 in
aluminium
4
Copper

4.2 mH (in series)
11 mm 0.43 in
60 x 14 mm 2.36 x 0.55 in
2916 g 6.42 Ib

0.9 T
10 mm 0.39 in

10.7 kg 23.58 Ib

®

Parameters

Fs
Vas
Qts
Qes
Qms
Re
Sd
Cas
Mas
Ras
Cms
Mms
Rms
Ces
Les
Res
BI
SPL

34.6 Hz

64.83 I 2.28 Ft

0.82

0.97

5.3

4.2 ohms (in series)

804.25 cm

4.62E-07 m5/N

45.84 kg/m

1880.29 ohms.ac

7.14E-05 m/N

296.5 g 0.65 Ib

12.162 g/s

1062.35 mF

19.92 mH

22.95 ohms

16.71 N/A (in series)

86.26 dB/W/m

2

124.65 in

4

Suggested application

Load V (l) Fb (Hz) F-3 (Hz) Ql
Sealed
Sealed
Sealed

40 - 41 7
60 - 37 7
80 - 36 7

3

2

BP 374 - 108, rue de l'Avenir - 42353 La Talaudière cedex - France - Tel. [phone] - Fax [phone] - www.focal-fr.com

Focal® is a trademark of Focal-JMlab

®