B&C 12 NW 76

12" · 8 Ω · 500 W · 98.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	40 Hz
Qts	0.163
Qes	0.17
Qms	3.7
Vas	76 L
Sd	522 cm²
Xmax	4.8 mm
Re	5.3 Ω
Bl	25 T·m
Mms	79.6 g
Pe	500 W
Sensitivity	98.3 dB

Alignment hint

EBP	235 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 4.3 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 12NW76	40 =	0.16 =	76 =	8 +3.2	98.5 +0.2	close		+
Oberton 12NB400	43.58 +3.58	0.18 +0.02	70.45 -5.55	5.25 +0.45	98 -0.3	close		+
BMS 12N820	37.8 -2.2	0.16 =	98.7 +22.7	4.5 -0.3	98 -0.3	close	Xmax 4.5 mm < 4.8 mm: lower excursion-limited SPL	+
Oberton 12NMB600	41.03 +1.03	0.134 -0.03	70.8 -5.2	5.25 +0.45	99 +0.7	close		+
JBL 2254J	46.6 +6.6	0.159 =	73.6 -2.4	3.9 -0.9	97 -1.3	close	16 Ω vs 8 Ω: amp load changes · Xmax 3.9 mm < 4.8 mm: lower excursion-limited SPL	+
B&C 12NW76	43 +3	0.15 -0.01	64.5 -11.5	8 +3.2	98 -0.3	close	4 Ω vs 8 Ω: amp load changes	+
Beyma 12P80/Fe	46 +6	0.186 +0.02	75.6 -0.4	5.6 +0.8	99.8 +1.5	close		+
B&C 12 PS 76	42 +2	0.208 +0.04	75 -1	5.1 +0.3	97.2 -1.1	close		+
Precision Devices PD122	42.9 +2.9	0.194 +0.03	90 +14	5.5 +0.7	98 -0.3	usable	16 Ω vs 8 Ω: amp load changes	+
PD PD 122	42.9 +2.9	0.196 +0.03	90 +14	4.7 -0.1	98.8 +0.5	usable	Xmax 4.7 mm < 4.8 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 12 NW 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.