Celestion NTR Range NTR12-3018D Spezifikationen
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NTR12-3018D
• 12" neodymium woofer offers 300Wrms (AES) continuous
power handling and 98dB sensitivity
• 3" high temperature Inside/Outside voice coil efficiently
dissipates heat, preventing sensitivity loss through
thermal compression
• M-roll surround provides progressive excursion control,
yielding a smooth response even at extremes of
frequency range
• Extremely lightweight design combined with a highly
efficient magnet assembly results in exceptional
power-to-weight ratio
• Intelligent heat management in both chassis and
magnet assembly design further minimises distortion
Frequency Response and Impedance Curves
110
90
70
Celestion International Ltd, Claydon Business Park, Great Blakenham, Ipswich IP6 ONL, UK
+44 (0)1473 835300 [email protected] www.celestionprofessional.com
Celestion adopts a progressive policy and reserve the right to alter drive unit specifications and/or appearance without prior notice 08/05
70
50
30
Measured - 1W @ 1m, 2π
Preliminary Data
General Specifications
Nominal diameter (mm/in) ...................................... 305/12
Power Rating (AES, W rms) ......................................... 300
Nominal impedance ( Ω ) ................................................. 8
Voice coil diameter (mm/in) .................................. 76.2/3.0
Frequency range (Hz)........................................... 50-4000
Sensitivity (dB) .............................................................. 98
Chassis type.............................................. Cast Aluminium
Magnet type.................................................... Neodymium
Coil material .................................................Round copper
Cone material...................................... Kevlar loaded paper
Surround material ...........................................Cloth sealed
Suspension ..............................................................Single
Xmax (mm/in) .........................................................4/0.16
Gap Depth (mm/in) ..............................................8.0/0.32
Voice coil winding width (mm/in) .........................16.0/0.63
Small Signal Parameters
D (m/in)............................................................0.26/10.24
F
(Hz) ....................................................................... 56.4
s
M
(g/oz) ....................................................... 54.41/1.92
md
M
(g/oz)........................................................ 6.92/0.244
air
Q
............................................................................2.74
ms
Q
.............................................................................0.33
es
Q
............................................................................ 0.29
ts
R
( Ω ) ........................................................................5.77
e
V
(lt/ft
3
) ........................................................51.78/1.828
as
BI (Tm) .................................................................... 19.61
C
(mm/N) ............................................................... 0.13
ms
R
(kg/s)................................................................ 7.921
ms
L
(mH).....................................................................0.778
e
Mounting Information
Overall diameter (mm/in) .................................... 310/12.2
Overall depth (mm/in).......................................... 137/5.39
Cut-out diameter (mm/in) .................................. 286/11.26
Mounting slot dimensions (mm/in) ......... 6.5/0.26x9.5/0.37
Number of mounting slots ............................................... 8
Mounting PCDrange (mm/in) ..............................294/11.57
Unit weight (kg/lb).................................................. 2.6/5.7
Packed Dimensions & Weight
Multi pack (60) size W x D x H (mm/in) ....... 1080x980x880
.............................................................. /42.5x38.6x34.6
Multi pack (60) weight (kg/lb) ............................... 146/321
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