Model
Aura NS4-255-4D
Rating
DIAM
4"
FS(Hz)
57
VAS(l)
3.8
QTS
0.39
PWR(W)
40
SPL(dB)
84.2
IMP(Ohm)
4x1
avb
NOPROD
Some parameters have a deviation from parameters associated with them. Please, look at the exclamation marks to get advice.
Thiele-Small Parameters
Fs(Hz)
57
Vas(l)
3.8
Qts
0.39
Qms
7
Qes
0.41
Bl(Tm)
4.8
Mms(gr)
7
Cms(mm/N)
1.054
Rms(kg/s)
0.38
Le(mH)
0
Re(Ohm)
3.6
Sd(sq.mm)
5029
Vd(l)
0
X-max(mm)
0
X-mech(mm)
0
General Parameters
Diameter (inch)
4
Max Power(W.)
40
RMS Power(W.)
20
Number of Coils
1
Impedance Z-Nom(Ohm)
4
Reference efficiency η0(%)
0.16
Sensitivity(dB) 1-W
84.2
Sensitivity(dB) 2.8-V
87.6
Mounting Information
Speaker Displacement (l)
0
Total Diameter (mm)
126
Cutout Diameter (mm)
105
Mounting Depth (mm)
66
Magnet Diameter (mm)
46
Optimum Enclosures
Enclosures
Vented, BP6P
