B&C 12CXN76

12" · 8 Ω · 350 W · 98.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	42 Hz
Qts	0.19
Qes	0.2
Qms	8
Vas	120 L
Sd	522 cm²
Xmax	6 mm
Re	5 Ω
Bl	17.6 T·m
Mms	47 g
Pe	350 W
Sensitivity	98.3 dB

Alignment hint

EBP	210 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 9.3 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 12 PZ 32	38 -4	0.193 =	102 -18	5.5 -0.5	97.6 -0.7	close	Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
Precision Devices PD122	42.9 +0.9	0.194 =	90 -30	5.5 -0.5	98 -0.3	close	16 Ω vs 8 Ω: amp load changes · Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
Beyma 12CXA400FE	42 =	0.251 +0.06	119 -1	6 =	98.1 -0.2	close		+
B&C 12 CXN 76	42 =	0.195 +0.01	120 =	4 -2	100.5 +2.2	close	250 W vs 350 W: lower power handling · Xmax 4 mm < 6 mm: lower excursion-limited SPL	+
B&C 12 HCX 76	42 =	0.195 +0.01	118.9 -1.1	4 -2	100.5 +2.2	close	Xmax 4 mm < 6 mm: lower excursion-limited SPL	+
RCF LF 12G301	43 +1	0.219 +0.03	97 -23	5.9 -0.1	98.6 +0.3	close	Xmax 5.9 mm < 6 mm: lower excursion-limited SPL	+
PHL Audio 4130	42 =	0.208 +0.02	92 -28	5.2 -0.8	98.5 +0.2	usable	Xmax 5.2 mm < 6 mm: lower excursion-limited SPL	+
RCF L 12P301	43 +1	0.219 +0.03	97 -23	7.8 +1.8	98.6 +0.3	usable		+
PD PD 1225C001	39 -3	0.189 =	156 +36	5.6 -0.4	100.6 +2.3	usable	Xmax 5.6 mm < 6 mm: lower excursion-limited SPL	+
Precision Devices PD 1225C001	39 -3	0.189 =	156 +36	5.6 -0.4	100.6 +2.3	usable	Xmax 5.6 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 12CXN76 →

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 (1)

12" Coaxial Toptopbass reflex