B&C 12FCX76 is a 12-inch 8 ohm LF driver rated at 350 W RMS. The validated T/S data includes Fs 47 Hz, Qts 0.34, Vas 82 L, Xmax 5 mm, sensitivity 95.9 dB, plus 261 cm³ Vd and 134 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 £294.14.
The published T/S values agree with each other
Thiele/Small
Fs
47Hz
Qts
0.34
Qes
0.35
Qms
11
Vas
82L
Re
5.3Ω
Le
1.30mH
Motor and cone
BL
15.6T·m
Sd
522cm²
Mms
54g
Xmax
5mm
Vd †
261cm³
Voice coil
76mm
Flux density
1T
Power and response
Sensitivity †
95.9dB
Manufacturer sensitivity
98dB
Power
350W
Nominal power
350W
Impedance
8Ω
Min. impedance
6.3Ω
EBP †
134 · Leans vented
Sensitivity shows 95.9 dB, calculated from the T/S values. B&C publishes 98.0 dB, 2.1 dB apart.
Excursion and motor values come from the LF section; the frequency range spans every section.