Model
18 Sound 21NTLW5000
Rating
DIAM
21"
FS(Hz)
31
VAS(l)
270
QTS
0.36
PWR(W)
4000
SPL(dB)
95.1
IMP(Ohm)
8x2
avb
PROD
Some parameters have a deviation from parameters associated with them. Please, look at the exclamation marks to get advice.
Thiele-Small Parameters
Fs(Hz)
31
Vas(l)
270
Qts
0.36
Qms
5.2
Qes
0.38
Bl(Tm)
32
Mms(gr)
372
Cms(mm/N)
0.071
Rms(kg/s)
13.93
Le(mH)
1.6
Re(Ohm)
5.4
Sd(sq.mm)
163748
Vd(l)
2.866
X-max(mm)
18
X-mech(mm)
33
General Parameters
Diameter (inch)
21
Max Power(W.)
4000
RMS Power(W.)
1800
Number of Coils
2
Impedance Z-Nom(Ohm)
8
Reference efficiency η0(%)
2.04
Sensitivity(dB) 1-W
95.1
Sensitivity(dB) 2.8-V
96.8
Mounting Information
Speaker Displacement (l)
0
Total Diameter (mm)
545
Cutout Diameter (mm)
492
Mounting Depth (mm)
320
Magnet Diameter (mm)
0
Optimum Enclosures
Enclosures
Closed, Vented, BP4, BP6P
