Professional Loudspeakers
Your Global Driver Solutions Partner
Celestion International Ltd, Claydon Business Park, Great Blakenham, Ipswich IP6 ONL, UK
Celestion adopts a progressive policy and reserve the right to alter drive unit specifications and/or appearance without prior notice 08/05
NTi15-4015B
General Specifications
Nominal diameter (mm/in) .......................................381/15
Power Rating (AES, W rms)...........................................400
Nominal impedance (
Ω
) ...................................................8
Voice coil diameter (mm/in) .................................101.6/4.0
Magnet type.....................................................Neodymium
Chassis type ...............................................Cast aluminium
Sensitivity (dB) ...............................................................98
Frequency range (Hz) ............................................40-3000
Coil material ....................................Copper clad aluminium
Cone material.......................................Kevlar loaded paper
Surround material............................................Cloth-sealed
Suspension...............................................................Single
Xmax (mm/in) .......................................................2.0/0.08
Gap depth (mm/in)..............................................12.0/0.47
Voice coil winding width (mm/in)..........................16.0/0.63
Small Signal Parameters
D (m/in)..............................................................0.33/8.38
Fs(Hz) ........................................................................48.3
Mmd (g/oz)........................................................57.37/2.03
Mair (g/oz).....................................................14.149/0.499
Qms ............................................................................2.76
Qes.............................................................................0.24
Qts .............................................................................0.22
Re(
Ω
) ........................................................................5.91
Vas (lt/ft
3
) ........................................................156.85/5.54
BI (Tm) .....................................................................23.17
Cms (mm/N) ................................................................0.15
Rms (kg/s) ...................................................................7.88
Le(mH).......................................................................0.43
Mounting Information
Overall diameter (mm/in) ....................................395/15.55
Overall depth (mm/in).............................................132/5.2
Cut-out diameter (mm/in) ...................................350/13.78
Mounting slot dimensions (mm/in)............7 x 9/0.28 x 0.35
Number of mounting slots ................................................8
Mounting slot PCD range (mm/in) .....376-378/14.80-14.88
Unit weight (kg/lb).................................................5.8/12.8
• 15" neodymium woofer offers 400Wrms continuous power
handling and 98dB sensitivity
• Innovative approach to heat management utilises front mounted
(inverted) neodymium magnet assembly
• High-flux motor assembly enables greater sensitivity and higher
damping for dynamic bass/low-mid applications
• 4" high temperature Inside/Outside voice coil efficiently dissipates
heat, preventing sensitivity loss through thermal compression
