Description
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Celestion NTR21-5010JD
8 Ohm 21" Loudspeaker
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General SpecificationsNominal diameter
530mm/21in
Power rating1
1600Wrms
Nominal impedance
8Ω
Sensitivity2
98dB
Frequency range
30-3000Hz
Voice coil diameter
125mm/5in
Chassis type
Cast aluminium
Magnet type
Neodymium
Coil material
Round copper
Former material
Glass fibre
Cone material
Carbon fibre loaded paper
Surround material
Cloth-sealed
Suspension
Double
Xmax3
9mm/0.35in
Gap depth
12mm/0.47in
Voice coil winding width
30mm/1.18in
Small Signal Parameters4D
0.46m/18.11in
Fs
30.2Hz
Mms
318.85g/11.26oz
Qms
5.231
Qes
0.309
Mmd
280.52g/9.9oz
Qts
0.291
Re
5.36Ω
Vas
341.43lt/12.05ft3
BI
32.39Tm
Cms
0.087mm/N
Rms
11.55Kg/s
Le (at 1kHz)
2.063mH
Mounting InformationOverall diameter
550mm/21.65in
Overall depth
254mm/10in
Cut-out diameter
492mm/19.37in
Mounting slot dimensions
12.5mm x 8.5mm/0.49in x 0.33in
Number of mounting slots
8
Mounting slot PCD range
520-528mm/20.5-20.8in
Unit weight
12.8kg/28.2lb
Packed Dimensions & WeightSingle pack size W x D x H
575mm x 575mm x 280mm
/22.6in x 22.6in x11.0in
Single pack weight
13.2kg/29lb
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