RCF MB 15N405

15" · 8 Ω · 1100 W · 100 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	46 Hz
Qts	0.265
Qes	0.28
Qms	4.8
Vas	124 L
Sd	910 cm²
Xmax	6.6 mm
Re	5.5 Ω
Bl	25.2 T·m
Mms	112.1 g
Pe	1100 W
Sensitivity	100 dB

Alignment hint

EBP	164 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 20.3 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
Fane COLOSSUS 15-750BMN	45 -1	0.27 +0.01	127 +3	5.8 -0.8	99.6 -0.4	close	750 W vs 1100 W: lower power handling · Xmax 5.8 mm < 6.6 mm: lower excursion-limited SPL	+
18 Sound 15NMB1000	46 =	0.24 -0.03	124 =	6.5 -0.1	101 +1	close	Xmax 6.5 mm < 6.6 mm: lower excursion-limited SPL	+
Oberton 15NB500	42.77 -3.23	0.255 -0.01	121.46 -2.54	7.25 +0.65	99 -1	close	500 W vs 1100 W: lower power handling	+
Oberton 15NMB500	44.74 -1.26	0.292 +0.03	127.95 +3.95	7.75 +1.15	100.5 +0.5	close	500 W vs 1100 W: lower power handling	+
18 Sound 15LW1401 4 Ohms	39 -7	0.26 -0.01	127 +3	7.4 +0.8	100 =	close	4 Ω vs 8 Ω: amp load changes	+
B&C 14 CXN 6	45 -1	0.28 +0.02	131 +7	5.6 -1	100 =	close	400 W vs 1100 W: lower power handling · Xmax 5.6 mm < 6.6 mm: lower excursion-limited SPL	+
Oberton 15B450 / 15B450A / 15B450A2	45.08 -0.92	0.286 +0.02	146.85 +22.85	6.75 +0.15	100 =	close	450 W vs 1100 W: lower power handling	+
18 Sound 15LW1402	42 -4	0.28 +0.02	126 +2	7 +0.4	98.4 -1.6	close		+
Oberton 15XL701	45.25 -0.75	0.28 +0.02	116.99 -7.01	8.75 +2.15	98 -2	close	700 W vs 1100 W: lower power handling	+
Sica 15 F 4 CP	46.4 +0.4	0.27 +0.01	97 -27	7 +0.4	99.4 -0.6	close	700 W vs 1100 W: lower power handling	+

Compare the closest 3 against the MB 15N405 →

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.