B&C 12 BG 100

12" · 8 Ω · 1000 W · 92.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	39 Hz
Qts	0.333
Qes	0.35
Qms	6.8
Vas	41 L
Sd	522 cm²
Xmax	7.8 mm
Re	5.1 Ω
Bl	23.5 T·m
Mms	155.2 g
Pe	1000 W
Sensitivity	92.4 dB

Alignment hint

EBP	111 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 11.7 L

EBP > 100: favours a ported (bass-reflex) alignment.

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

Substitute candidates

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
B&C 12BG100	39 =	0.33 =	41 =	10.5 +2.7	93 +0.6	close		+
Soundstream SPLX-122	35 -4	0.322 -0.01	40.2 -0.8	8 +0.2	92 -0.4	close	750 W vs 1000 W: lower power handling	+
Sica 12 SR 4 CP	38 -1	0.3 -0.03	41.7 +0.7	9 +1.2	92.6 +0.2	close		+
Eminence DEFINIMAX 4012ULF-8	40 +1	0.31 -0.02	41.342 +0.34	6.7 -1.1	91 -1.4	close	Xmax 6.7 mm < 7.8 mm: lower excursion-limited SPL	+
Faital PRO 12RS550	42 +3	0.37 +0.04	45.4 +4.4	9.25 +1.45	93 +0.6	close	500 W vs 1000 W: lower power handling	+
Gladen SQX12	36.7 -2.3	0.405 +0.07	40.9 -0.1	7 -0.8	92.6 +0.2	close	4 Ω vs 8 Ω: amp load changes · 600 W vs 1000 W: lower power handling · Xmax 7 mm < 7.8 mm: lower excursion-limited SPL	+
Faital PRO 12RS1066	42 +3	0.33 =	31.5 -9.5	12.45 +4.65	93 +0.6	close		+
Gladen SQL 12 EXTREME	33 -6	0.353 +0.02	36 -5	9.4 +1.6	93.1 +0.7	close	2 Ω vs 8 Ω: amp load changes	+
PHL Audio 4021 vp kaz1	40.4 +1.4	0.354 +0.02	46.3 +5.3	5.5 -2.3	92.8 +0.4	usable	450 W vs 1000 W: lower power handling · Xmax 5.5 mm < 7.8 mm: lower excursion-limited SPL	+
Sica 12 PNS 4	41.7 +2.7	0.31 -0.02	50.2 +9.2	9.5 +1.7	94.5 +2.1	usable		+

Compare the closest 3 against the 12 BG 100 →

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.