Model
Focal 4K 211
Rating
DIAM
4"
FS(Hz)
64.1
VAS(l)
7.5
QTS
0.35
PWR(W)
35
SPL(dB)
89.1
IMP(Ohm)
8x1
avb
UNK
Some parameters have a deviation from parameters associated with them. Please, look at the exclamation marks to get advice.
Thiele-Small Parameters
Fs(Hz)
64.1
Vas(l)
7.5
Qts
0.35
Qms
4.43
Qes
0.37
Bl(Tm)
4.3
Mms(gr)
3
Cms(mm/N)
2.1
Rms(kg/s)
0.265
Le(mH)
0
Re(Ohm)
5.9
Sd(sq.mm)
5030
Vd(l)
0.009
X-max(mm)
2
X-mech(mm)
0
General Parameters
Diameter (inch)
4
Max Power(W.)
35
RMS Power(W.)
17
Number of Coils
1
Impedance Z-Nom(Ohm)
8
Reference efficiency η0(%)
0
Sensitivity(dB) 1-W
89.1
Sensitivity(dB) 2.8-V
0
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
Vented, BP6
