LF Cast Chassis / Neo

Celestion
Please wait
Buy Now

NTR21-5010JD

NTR21-5010JD
NTR21-5010JD

Features

  • 21" neodymium subwoofer offers 1600Wrms (AES standard) power handling and 98dB sensitivity
  • 5" high temperature Inside/Outside voice coil efficiently dissipates heat, preventing sensitivity loss through thermal compression
  • Double suspension and a "multi-roll" surround provide exceptional linearity at extremes of cone excursion
  • Rigid lightweight carbon fibre loaded cone delivers improved performance and faster response
  • Intelligent heat management in both chassis and magnet assembly design further minimizes distortion

8Ω Frequency Response

Product Graph
  1. Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.
  2. Measured on axis at 1W, 1m in 2π anechoic environment.
  3. Xmax derived from: (voice coil winding width-gap depth)/2.
  4. Small signal parameters measured after unit subjected to pre-conditioning signal.

General Specifications

Nominal diameter
530mm/21in
Power rating1
1600Wrms
Nominal impedance
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 Parameters4

D
0.46m/18.11in
Fs
30.2Hz
Mms
318.85g/11.26oz
Mmd
280.52g/9.9oz
Qms
5.231
Qes
0.309
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 Information

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 PCD range
520-528mm/20.5-20.8in
Unit weight
12.8kg/28.2lb

Packed Dimensions & Weight

Single 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