B&C 15FCX76 is a 15-inch 8 ohm LF driver rated at 400 W RMS. The validated T/S data includes Fs 40 Hz, Qts 0.44, Vas 187 L, Xmax 7.5 mm, sensitivity 96.1 dB, plus 641 cm³ Vd and 85 EBP. bits tracks UK, EU and US shop prices, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £301.96.
The published T/S values agree with each other
Thiele/Small
Fs
40Hz
Qts
0.44
Qes
0.47
Qms
8.3
Vas
187L
Re
5.2Ω
Le
1.20mH
Motor and cone
BL
15.6T·m
Sd
855cm²
Mms
87g
Xmax
7.5mm
Vd †
641cm³
Voice coil
76mm
Flux density
1T
Power and response
Sensitivity †
96.1dB
Manufacturer sensitivity
98dB
Power
400W
Nominal power
400W
Impedance
8Ω
Min. impedance
6Ω
EBP †
85 · Sealed or vented
Sensitivity shows 96.1 dB, calculated from the T/S values. B&C publishes 98.0 dB, 1.9 dB apart.
Excursion and motor values come from the LF section; the frequency range spans every section.