B&C 12 BG 76

12" · 8 Ω · 500 W · 91.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	44 Hz
Qts	0.409
Qes	0.44
Qms	5.9
Vas	32 L
Sd	522 cm²
Xmax	5.1 mm
Re	5.4 Ω
Bl	23 T·m
Mms	156.2 g
Pe	500 W
Sensitivity	91.6 dB

Alignment hint

EBP	100 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 16.1 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

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
B&C 12BG76	44 =	0.41 =	32 =	9.5 +4.4	92 +0.4	close		+
Ciare 12.00 SW	43.61 -0.39	0.38 -0.03	32 =	11.5 +6.4	90.1 -1.5	close		+
Beyma POWER 12	45 +1	0.378 -0.03	31.6 -0.4	4.5 -0.6	93.8 +2.2	close	4 Ω vs 8 Ω: amp load changes · Xmax 4.5 mm < 5.1 mm: lower excursion-limited SPL	+
Faital PRO 12RS1066	45 +1	0.44 +0.03	28.4 -3.6	12.45 +7.35	92 +0.4	close	16 Ω vs 8 Ω: amp load changes	+
Focal 13W 7653	46 +2	0.391 -0.02	30.9 -1.1	4.2 -0.9	94.5 +2.9	close	4 Ω vs 8 Ω: amp load changes · Xmax 4.2 mm < 5.1 mm: lower excursion-limited SPL	+
Soundstream T4-12	36.5 -7.5	0.371 -0.04	29.3 -2.7	6.6 +1.5	91.3 -0.3	usable	4 Ω vs 8 Ω: amp load changes	+
Ciare PW331	44 =	0.378 -0.03	32 =	2.9 -2.2	91.1 -0.5	usable	150 W vs 500 W: lower power handling · Xmax 2.9 mm < 5.1 mm: lower excursion-limited SPL	+
Gladen SQX12	36.7 -7.3	0.405 =	40.9 +8.9	7 +1.9	92.6 +1	usable	4 Ω vs 8 Ω: amp load changes	+
Pioneer TS-W1200PRO	40 -4	0.376 -0.03	45.6 +13.6	5.8 +0.7	91.3 -0.3	usable		+
Faital PRO 12RS1066	42 -2	0.33 -0.08	31.5 -0.5	12.45 +7.35	93 +1.4	usable		+

Compare the closest 3 against the 12 BG 76 →

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.