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B&C 12 FG 100 4 Ohms

12" · 4 Ω · 1000 W · 94.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size12"
Impedance4 Ω
Fs34 Hz
Qts0.32
Qes0.34
Qms5.4
Vas53 L
Sd522 cm²
Xmax9.2 mm
Re2.9 Ω
Bl17 T·m
Mms157.9 g
Pe1000 W
Sensitivity94.3 dB

Alignment hint

EBP100 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 13.6 L

EBP 50-100: works in either a sealed or ported alignment.

Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.

Substitute candidates

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
B&C 12FG10034 =0.32 =53 =10.3 +1.191 -3.3close+
Pioneer TS-W305C (prodance)34 =0.311 -0.0154 +16.8 -2.494.5 +0.2close400 W vs 1000 W: lower power handling · Xmax 6.8 mm < 9.2 mm: lower excursion-limited SPL+
Ground Zero GZRW 30SPL vp33.3 -0.70.357 +0.0452 -19.1 -0.192 -2.3close8 Ω vs 4 Ω: amp load changes · 750 W vs 1000 W: lower power handling · Xmax 9.1 mm < 9.2 mm: lower excursion-limited SPL+
Sica 12 PNS 441.7 +7.70.31 -0.0150.2 -2.89.5 +0.394.5 +0.2close8 Ω vs 4 Ω: amp load changes+
Pioneer TS-W305C32.7 -1.30.34 +0.0251.5 -1.57.1 -2.193.4 -0.9close400 W vs 1000 W: lower power handling · Xmax 7.1 mm < 9.2 mm: lower excursion-limited SPL+
B&C 12 FG 10034 =0.362 +0.0449 -49.5 +0.391 -3.3close8 Ω vs 4 Ω: amp load changes+
B&C 12FG10034 =0.36 +0.0449 -410.3 +1.191 -3.3close8 Ω vs 4 Ω: amp load changes+
Focal 33VX34 =0.322 =66.5 +13.56.4 -2.894.7 +0.4usable350 W vs 1000 W: lower power handling · Xmax 6.4 mm < 9.2 mm: lower excursion-limited SPL+
Soundstream SPLX-12235 +10.322 =40.2 -12.88 -1.292 -2.3usable8 Ω vs 4 Ω: amp load changes · 750 W vs 1000 W: lower power handling · Xmax 8 mm < 9.2 mm: lower excursion-limited SPL+
B&C 12BG10039 +50.33 +0.0141 -1210.5 +1.393 -1.3usable8 Ω vs 4 Ω: amp load changes+

Compare the closest 3 against the 12 FG 100 4 Ohms →

Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.

Used in enclosures (0)

No enclosure in the catalog uses this driver yet.