B&C 12 NCX

12" · 8 Ω · 200 W · 96.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	59 Hz
Qts	0.51
Qes	0.58
Qms	4.2
Vas	64 L
Sd	522 cm²
Xmax	3 mm
Re	5.8 Ω
Bl	12.7 T·m
Mms	43.4 g
Pe	200 W
Sensitivity	96.9 dB

Alignment hint

EBP	102 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 69.4 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
Monacor SP-12/100PA v3	56.4 -2.6	0.491 -0.02	66.7 +2.7	3 =	96.5 -0.4	close	100 W vs 200 W: lower power handling	+
RCF L12CX2K	59.7 +0.7	0.46 -0.05	65 +1	4 +1	96.3 -0.6	close	75 W vs 200 W: lower power handling	+
P.Audio E12-200S v2024	59 =	0.569 +0.06	62 -2	4.1 +1.1	96.4 -0.5	close		+
Celestion BN12-300X	56.2 -2.8	0.479 -0.03	61.2 -2.8	4 +1	96.1 -0.8	close		+
SICA 12 C 2 CP	63 +4	0.509 =	70 +6	4.2 +1.2	98 +1.1	close		+
JB Systems PWX12-200	59.4 +0.4	0.474 -0.04	55.5 -8.5	3.6 +0.6	96.5 -0.4	close		+
RCF L 12/565	55 -4	0.497 -0.01	75 +11	3.8 +0.8	97.3 +0.4	close	100 W vs 200 W: lower power handling	+
Celestion TF 1225	63 +4	0.5 -0.01	54.5 -9.5	3.5 +0.5	97.9 +1	close		+
RCF L 12/565K	63 +4	0.56 +0.05	57 -7	2.9 -0.1	97.3 +0.4	close	100 W vs 200 W: lower power handling · Xmax 2.9 mm < 3 mm: lower excursion-limited SPL	+
HH Electronics DC100LW	60 +1	0.56 +0.05	56.6 -7.4	3.2 +0.2	95.2 -1.7	close	100 W vs 200 W: lower power handling	+

Compare the closest 3 against the 12 NCX →

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.