Celestion FTR15-3070C
8Ω
Low frequency
Nominal diameter | 15″ / 381 mm |
Resonance | 41.4 Hz |
Q factor | 0.38 |
Sensitivity | 97.4 dB |
Linear excursion | ± 5.5 mm |
Program Power | 800 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 97.4dB
- Frequency response 40 - 4000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 41.4Hz
- Mechanical quality factor QMS 3.51
- Electrical quality factor QES 0.43
- Total quality factor QTS 0.38
Large signal parameters
- Maximum linear excursion xmax 5.5mm
- Air volume displaced at xmax VD 470cm³
- Power handling P 400W
- Program power Pmax 800W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.1Ω
- Inductance (1kHz) LE 0.59mH
- VC Diameter 75mm
- Winding height HVC 16mm
- Winding material Round copper
- Former material Glass fibre
Magnet
- Force factor Bl 17.3N/A
- Motor constant Bl/√RE 7.03N/√W
- Air gap height HAG 10mm
- Weight 2.3kg
- Material Ferrite
Diaphragm
- Effective diameter 330mm
- Effective area SD 855cm²
- Moving mass MMS 81.7g
- Moving mass (without air load) MMD 64.4g
- Material Glass loaded paper (weather-resistant)
Suspensions
- Stiffness KMS 5.56N/mm
- Compliance CMS 180µm/N
- Equivalent volume to the compliance VAS 188L
- Mechanical resistance RMS 6.05N·s/m
- Surround material Cloth-sealed
Dimensions
- Nominal diameter 15″
- 381mm
- Overall diameter 385mm
- Baffle cutout diameter 351mm
- Overall depth 158mm
- Volume occupied by the driver (estimated) 3.3L
- Net weight 6.3kg
- Frame material Cast aluminium
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