Model
Beyma 4FR40
Rating
DIAM
4"
FS(Hz)
92
VAS(l)
2.8
QTS
0.88
PWR(W)
80
SPL(dB)
85.4
IMP(Ohm)
8x1
avb
PROD
Thiele-Small Parameters
Fs(Hz)
92
Vas(l)
2.8
Qts
0.88
Qms
11.3
Qes
0.96
Bl(Tm)
4.2
Mms(gr)
4
Cms(mm/N)
0.668
Rms(kg/s)
0.23
Le(mH)
0.2
Re(Ohm)
6.4
Sd(sq.mm)
5500
Vd(l)
0.017
X-max(mm)
3
X-mech(mm)
0
General Parameters
Diameter (inch)
4
Max Power(W.)
80
RMS Power(W.)
40
Number of Coils
1
Impedance Z-Nom(Ohm)
8
Reference efficiency η0(%)
0.22
Sensitivity(dB) 1-W
85.4
Sensitivity(dB) 2.8-V
86.4
Mounting Information
Speaker Displacement (l)
0
Total Diameter (mm)
118
Cutout Diameter (mm)
92
Mounting Depth (mm)
60
Magnet Diameter (mm)
70
Optimum Enclosures
Enclosures
Vented, BP6P
