CSX 257 H
257 SWR 39 115 SDX 4L AL 8 ohm    -    Order ID: 850146

High-end 10" woofer with a 5 layer "Sandwich" cone, extra heavy magnet, extra long 4 layer coil and distortion killer shortcirquit ring in the magnet system. This gives exceptionally good linearity and very deep and clean bass.
Also, remark the very smooth response.This CSX 10" woofer is recommended for very versatile use in closed as well as vented boxes. In a reflex box of 100 ltrs. with tunings around 23 Hz it keeps level down to 30 Hz.
A remarkable characteristic is the very robust extra thick iron plate basket with a nice structure lackering.

 

 

 

 

CSX 257 H

 

 

 

 

 

 

 

Thiele Small parameters:

 

 

Free air

Common

Baffled

 

 

Nominal impedance

Zn

(ohm)

 

8

 

 

 

Minimum impedance/at freq.

Zmin

(ohm/Hz)

 

6.2/130

 

 

 

Maximum impedance

Zo

(ohm)

 

40.3

 

 

 

DC resistance

Re

(ohm)

 

5.5

 

 

 

Voice coil inductance

Le

(mH)

 

2.9

 

 

 

Capacitor in series with 8 ohm
(for impedance compensation)

Cc

(F)

 

25

 

 

 

Resonance Frequency

fs

(Hz)

22.6

 

21.9

 

 

Mechanical Q factor

Qms

 

2.56

 

2.64

 

 

Electrical Q factor

Qes

 

0.40

 

0.42

 

 

Total Q factor

Qts

 

0.35

 

0.36

 

 

F (Ratio fs/Qts)

F

(Hz)

 

 

61

 

 

Mechanical resistance

Rms

(Kg/s)

 

2.87

 

 

 

Moving mass

Mms

(g)

51.9

 

55.1

 

 

Suspension compliance

Cms

(mm/N)

 

0.96

 

 

 

Effective cone diameter

D

(cm)

 

20.5

 

 

 

Effective piston area

Sd

(cm)

 

330

 

 

 

Equivalent volume

VAS

(ltrs)

 

144.4

 

 

 

Force factor

Bl

(N/A)

 

10.0

 

 

 

Reference voltage sensitivity
Re 2.83V 1m at 130 Hz (Measured)

 

(dB)

 

 

88.2

 

 

 

Magnet and voice coil parameters:

 

 

 

 

 

 

 

Voice coil diameter

d

(mm)

39

 

 

 

 

Voice coil length

h

(mm)

26

 

 

 

 

Voice coil layers

n

 

4

 

 

 

 

Flux density in gap

B

(T)

0.85

 

 

 

 

Total useful flux

 

(mWb)

1.34

 

 

 

 

Height of the gap

hg

(mm)

8

 

 

 

 

Diameter of magnet

dm

(mm)

115

 

 

 

 

Height of magnet

hm

(mm)

22

 

 

 

 

Weight of magnet

 

(kg)

0.87

 

 

 

 

 

Power handling:

 

 

 

 

 

 

Long term Max System Power (IEC)

(W)

200