Fi Car Audio BTL3 15 D2
2x1Ω
2x2Ω
Subwoofer
15″ / 397 mm
Nominal diameter
33 Hz
Resonance
0.3
Q factor
91 dB
Sensitivity
± 34 mm
Linear excursion
5000 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 90.5
- dB
- Resonance frequency (free air)
- fS
- 32.7
- Hz
- Mechanical quality factor
- QMS
- 6.52
- Electrical quality factor
- QES
- 0.31
- Total quality factor
- QTS
- 0.30
- Maximum linear excursion
- xmax
- 34.0
- mm
- Air volume displaced at xmax
- VD
- 2754
- cm³
- Power handling
- P
- 2500
- W
- Program power
- Pmax
- 5000
- W
- Nominal impedance
- Z
- 2 x 2
- Ω
- DC resistance (in series)
- RE
- 3.6
- Ω
- Inductance (1kHz, in series, estimated)
- LE
- 1.73
- mH
- Force factor (in series)
- Bl
- 28.2
- N/A
- Motor constant
- Bl/√RE
- 14.9
- N/√W
- Effective diameter
- 321
- mm
- Effective area
- SD
- 810
- cm²
- Moving mass
- MMS
- 331
- g
- Moving mass (without air load)
- MMD
- 314.2
- g
- Stiffness
- KMS
- 13.89
- N/mm
- Compliance
- CMS
- 72
- µm/N
- Equivalent volume to the compliance
- VAS
- 28.1
- L
- Mechanical resistance
- RMS
- 10.43
- N·s/m
- Nominal diameter
- 15
- ″
- 397
- mm
- Overall diameter
- 397
- mm
- Baffle cutout diameter
- 359
- mm
- Mounting depth
- 222
- mm
- Volume occupied by the driver
- 2.55
- L