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
TN1230
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
Magnet type.....................................................Neodymium
Chassis type ..................................................Pressed steel
Sensitivity (dB) ...............................................................97
Frequency range (Hz) ............................................50-4000
Coil material..................................................Round copper
Former material ...................................................Polyimide
Cone material.......................................Kevlar loaded paper
Surround material............................................Cloth-sealed
Suspension...............................................................Single
Xmax (mm/in) ...................................................3.75/0.148
Gap depth (mm/in)..............................................10.0/0.39
Voice coil winding width (mm/in)..........................17.5/0.69
Small Signal Parameters
D (m/in)............................................................0.26/10.24
Fs(Hz) ........................................................................49.0
Mmd (g/oz)........................................................53.04/1.86
Mair g/oz)............................................................6.92/0.24
Qms ............................................................................5.46
Qes.............................................................................0.28
Qts .............................................................................0.27
Re(
Ω
) ........................................................................5.13
Vas (lt/ft
3
) ..........................................................70.27/2.76
BI (Tm) .......................................................................18.3
Cms (mm/N) ................................................................0.18
Rms (kg/s) ...................................................................3.38
Le(mH).......................................................................0.94
Mounting Information
Overall Diameter (mm/in)....................................309/12.17
Overall depth (mm/in)...........................................132/5.20
Cut out diameter (mm/in) ...................................283/11.14
Mounting slot dimensions (mm/in) .........................7.9/0.31
Number of mounting slots ................................................4
Mounting slot PCD (mm/in).................................297/11.69
Unit weight (kg/lb)...................................................2.0/4.4
Packed Dimensions & Weight
Single pack size W x D x H (mm/in)...........330 x 330 x 150
............................................................./13.0 x 13.0 x 5.9
Single pack weight (kg/lb) .......................................2.4/5.3
Multipack (60) size W x D x H (mm/in).....1008 x 980 x 860
.........................................................../39.7 x 38.6 x 33.9
Multipack (60) weight (kg/lb) .................................146/322
Frequency Response and Impedance Curves
• 12" mid/bass driver with 3.0" voice coil, providing 300Wrms (AES)
continuous power handling
• FEA optimised neodymium magnet assembly design for lower
weight and reduced harmonic distortion
• “M-Roll” surround provides progressive excursion control yielding
a smooth response curve at extremes of frequency range
• Kevlar-impregnated cone with sealed surround and damping
contributes to lower distortion
• Rigid chassis design for maximum energy transfer,
and vented magnet assembly for efficient cooling
Measured - 1W @ 1m, 2π
