B&C 4MCX36 is a 4-inch 8 ohm LF driver rated at 100 W RMS. The validated T/S data includes Fs 150 Hz, Qts 0.91, Vas 0.8 L, Xmax 3 mm, sensitivity 85.6 dB, plus 17 cm³ Vd and 125 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.
The published T/S values agree with each other
Thiele/Small
Fs
150Hz
Qts
0.91
Qes
1.20
Qms
3.9
Vas
0.8L
Re
5.6Ω
Le
0.87mH
Motor and cone
BL
5.3T·m
Sd
56cm²
Mms
6g
Xmax
3mm
Vd †
17cm³
Voice coil
34mm
Flux density
0.74T
Power and response
Sensitivity †
85.6dB
Manufacturer sensitivity
87dB
Power
100W
Nominal power
100W
Impedance
8Ω
Min. impedance
6.8Ω
EBP †
125 · Leans vented
Sensitivity shows 85.6 dB, calculated from the T/S values. B&C publishes 87.0 dB, 1.4 dB apart.
Excursion and motor values come from the LF section; the frequency range spans every section.