Model
Celestion NTR21-5010JD
Rating
DIAM
21"
FS(Hz)
30.2
VAS(l)
341.2
QTS
0.29
PWR(W)
3200
SPL(dB)
96.7
IMP(Ohm)
8x1
avb
PROD
Thiele-Small Parameters
Fs(Hz)
30.2
Vas(l)
341.2
Qts
0.291
Qms
5.231
Qes
0.308
Bl(Tm)
32.4
Mms(gr)
319
Cms(mm/N)
0.087
Rms(kg/s)
11.58
Le(mH)
2.063
Re(Ohm)
5.4
Sd(sq.mm)
166294
Vd(l)
1.497
X-max(mm)
9
X-mech(mm)
0
General Parameters
Diameter (inch)
21
Max Power(W.)
3200
RMS Power(W.)
1600
Number of Coils
1
Impedance Z-Nom(Ohm)
8
Reference efficiency η0(%)
2.94
Sensitivity(dB) 1-W
96.7
Sensitivity(dB) 2.8-V
98.4
Mounting Information
Speaker Displacement (l)
0
Total Diameter (mm)
550
Cutout Diameter (mm)
492
Mounting Depth (mm)
254
Magnet Diameter (mm)
0
Optimum Enclosures
Enclosures
Vented, BP6
