Model

Challenger OPUS SD-250BX

Rating
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DIAM
10"
FS(Hz)
38
VAS(l)
36
QTS
0.47
PWR(W)
400
SPL(dB)
88
IMP(Ohm)
4x1
avb
PROD

Thiele-Small Parameters

Fs(Hz)
38
Vas(l)
36
Qts
0.472
Qms
4.15
Qes
0.473
Bl(Tm)
11.6
Cms(mm/N)
0.209
Rms(kg/s)
4.831
Le(mH)
0
Mms(gr)
84
Vd(l)
0
Sd(sq.mm)
34850
X-max(mm)
0
X-mech(mm)
0
Re(Ohm)
3.4

General Parameters

Diameter (inch)
10
Max Power(W.)
400
RMS Power(W.)
200
Number of Coils
1
Impedance Z-Nom(Ohm)
4
Reference efficiency η0(%)
0.4
Sensitivity(dB) 1-W
88
Sensitivity(dB) 2.8-V
91.7

Mounting Information

Speaker Displacement (l)
0
Total Diameter (mm)
0
Cutout Diameter (mm)
0
Mounting Depth (mm)
0
Magnet Diameter (mm)
0

Optimum Enclosures

Enclosures
Closed, Vented, BP4, BP6