Model

Challenger OPUS SD-300BX

Rating
DIAM
12"
FS(Hz)
31
VAS(l)
52
QTS
0.47
PWR(W)
500
SPL(dB)
86.6
IMP(Ohm)
4x1
avb
PROD

Thiele-Small Parameters

Fs(Hz)
31
Vas(l)
52
Qts
0.47
Qms
5
Qes
0.519
Bl(Tm)
14.2
Mms(gr)
164
Cms(mm/N)
0.161
Rms(kg/s)
6.389
Le(mH)
0
Re(Ohm)
3.2
Sd(sq.mm)
47721
Vd(l)
0
X-max(mm)
0
X-mech(mm)
0

General Parameters

Diameter (inch)
12
Max Power(W.)
500
RMS Power(W.)
250
Number of Coils
1
Impedance Z-Nom(Ohm)
4
Reference efficiency η0(%)
0.29
Sensitivity(dB) 1-W
86.6
Sensitivity(dB) 2.8-V
90.6

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

Speaker response