RCF CX 12N351 V2017

12" · 8 Ω · 450 W · 99.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	58 Hz
Qts	0.202
Qes	0.21
Qms	5.4
Vas	47 L
Sd	500 cm²
Xmax	3.6 mm
Re	5.8 Ω
Bl	23.8 T·m
Mms	56.1 g
Pe	450 W
Sensitivity	99.8 dB

Alignment hint

EBP	276 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 4.2 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
RCF CX12N351	58 =	0.2 =	47 =	6 +2.4	98.2 -1.6	close	90 W vs 450 W: lower power handling	+
Precision Devices PD121	59 +1	0.201 =	54 +7	5 +1.4	100 +0.2	close	16 Ω vs 8 Ω: amp load changes · 300 W vs 450 W: lower power handling	+
RCF MB 12N405	52 -6	0.203 =	53 +6	5.7 +2.1	99.5 -0.3	close		+
RCF MB 12N351	55 -3	0.201 =	61 +14	4.7 +1.1	100.4 +0.6	close		+
PD PD 121	59 +1	0.201 =	54 +7	2.7 -0.9	100.7 +0.9	close	300 W vs 450 W: lower power handling · Xmax 2.7 mm < 3.6 mm: lower excursion-limited SPL	+
Precision Devices PD 121	59 +1	0.201 =	54 +7	2.7 -0.9	100.7 +0.9	close	300 W vs 450 W: lower power handling · Xmax 2.7 mm < 3.6 mm: lower excursion-limited SPL	+
B&C 12FW76	54 -4	0.18 -0.02	45 -2	7 +3.4	100 +0.2	close		+
B&C 12 FW 76	54 -4	0.172 -0.03	45 -2	3.3 -0.3	99.9 +0.1	close	Xmax 3.3 mm < 3.6 mm: lower excursion-limited SPL	+
B&C 12FW76	54 -4	0.18 -0.02	48.5 +1.5	7 +3.4	99 -0.8	close	4 Ω vs 8 Ω: amp load changes	+
RCF MB 12N407	48 -10	0.194 -0.01	50 +3	4.7 +1.1	98.4 -1.4	close		+

Compare the closest 3 against the CX 12N351 V2017 →

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.