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
FTR15-3070E
General Specifications
Nominal diameter (mm/in) .......................................381/15
Power Rating (AES, W rms)...........................................400
Nominal impedance (
Ω
) ...................................................8
Voice coil diameter (mm/in) ...................................76.2/3.0
Magnet type .............................................................Ferrite
Chassis type ...............................................Cast aluminium
Sensitivity (dB) ...............................................................97
Frequency range (Hz) ............................................40-4000
Coil material..................................................Round copper
Former material..................................................Glass fibre
Cone material.................................Glass loaded paper with
...........................................weather resistant impregnation
Surround material............................................Cloth-sealed
Suspension...............................................................Single
Xmax (mm/in) .......................................................5.5/0.22
Gap depth (mm/in)................................................9.0/0.35
Voice coil winding width (mm/in)..........................20.0/0.79
Small Signal Parameters
D (m/in)..............................................................0.33/8.38
F
s
(Hz) ........................................................................45.3
M
md
(g/oz)........................................................74.54/2.63
M
air
(g/oz).....................................................14.149/0.499
Q
ms
............................................................................3.07
Q
es
.............................................................................0.46
Q
ts
.............................................................................0.40
R
e
(
Ω
) ........................................................................5.36
V
as
(lt/ft
3
) ........................................................143.85/5.08
BI (Tm) .....................................................................17.24
C
ms
(mm/N) ................................................................0.14
R
ms
(kg/s) ...................................................................8.22
L
e
(mH) ........................................................................ 1.3
Mounting Information
Overall diameter (mm/in) ....................................385/15.16
Overall depth (mm/in)...........................................161/6.34
Cut-out diameter (mm/in) ...................................351/13.82
Mounting slot dimensions (mm/in)..........7 x 10/0.28 x 0.39
Number of mounting slots ................................................8
Mounting slot PCD range (mm/in) .....365-375/14.37-14.76
Unit weight (kg/lb).................................................6.4/14.1
Packed Dimensions & Weight
Single pack size W x D x H (mm/in) ...........435 x 435 x 200
............................................................./17.1 x 17.1 x 7.9
Single pack weight (kg/lb) .....................................7.7/17.0
Multipack (36) size W x D x H (mm/in) ..........1210 x 1050 x
.....................................................980/47.6 x 41.3 x 35.4
Multipack (36) weight (kg/lb) .................................278/613
• 400Wrms continuous power handling (measured to AES Standard)
• Flexirol™ technology for greater excursion control
• Saturated gap technology for lower harmonic distortion
• Low frequency response, down to 40Hz
• Smart chassis design minimises acoustic distortion
• Specially treated weather-resistant cone
70
90
110
30
50
70
Frequency Response and Impedance Curves
Measured - 1W @ 1m, 2
π
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