RCF MB 12N301

12" · 8 Ω · 500 W · 99.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	54 Hz
Qts	0.24
Qes	0.26
Qms	3.1
Vas	71 L
Sd	530 cm²
Xmax	4.9 mm
Re	5.8 Ω
Bl	19.1 T·m
Mms	48.2 g
Pe	500 W
Sensitivity	99.7 dB

Alignment hint

EBP	208 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 9.2 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
18 Sound 12CX800	53 -1	0.253 +0.01	73 +2	4.7 -0.2	99.4 -0.3	close	Xmax 4.7 mm < 4.9 mm: lower excursion-limited SPL	+
RCF MB 12G301	53 -1	0.264 +0.02	72 +1	4.8 -0.1	99.5 -0.2	close	Xmax 4.8 mm < 4.9 mm: lower excursion-limited SPL	+
B&C 12PLB76	50 -4	0.23 -0.01	75 +4	5 +0.1	99 -0.7	close	350 W vs 500 W: lower power handling	+
Electro-Voice EVM-DL12X	56 +2	0.24 =	77.3 +6.3	4.1 -0.8	99.2 -0.5	close	150 W vs 500 W: lower power handling · Xmax 4.1 mm < 4.9 mm: lower excursion-limited SPL	+
B&C 12 PLB 76	50 -4	0.229 -0.01	75 +4	4.4 -0.5	99.7 =	close	350 W vs 500 W: lower power handling · Xmax 4.4 mm < 4.9 mm: lower excursion-limited SPL	+
Oberton 12B400	50.47 -3.53	0.249 +0.01	74.74 +3.74	5.25 +0.35	98 -1.7	close		+
18 Sound 12ND830	58 +4	0.24 =	63 -8	6.5 +1.6	99 -0.7	close	4 Ω vs 8 Ω: amp load changes	+
Oberton 12B450	46.29 -7.71	0.235 -0.01	71.75 +0.75	7.75 +2.85	99 -0.7	close		+
18 Sound 12ND830	55 +1	0.28 +0.04	72 +1	6.5 +1.6	99 -0.7	close		+
Electro-Voice DL12X	56 +2	0.233 -0.01	77 +6	4.1 -0.8	100.7 +1	close	300 W vs 500 W: lower power handling · Xmax 4.1 mm < 4.9 mm: lower excursion-limited SPL	+

Compare the closest 3 against the MB 12N301 →

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.