BMS 15N620-4

15" · 4 Ω · 500 W · 100.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	39.8 Hz
Qts	0.313
Qes	0.33
Qms	6.05
Vas	144.8 L
Sd	870 cm²
Xmax	5.5 mm
Re	2.9 Ω
Bl	16 T·m
Mms	117.2 g
Pe	500 W
Sensitivity	100.8 dB

Alignment hint

EBP	121 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 35.3 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
BMS 15N620-8	40 +0.2	0.313 =	144.8 =	5.5 =	97.8 -3	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 15FH500 vp1	40 +0.2	0.328 +0.02	146.1 +1.3	6.7 +1.2	98.4 -2.4	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 15FH520-4 v2021	38 -1.8	0.337 +0.02	146.2 +1.4	7.4 +1.9	100.3 -0.5	close		+
SB Audience BIANCO-15MW500	39 -0.8	0.307 -0.01	139.4 -5.4	5.9 +0.4	97.7 -3.1	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 15FH500 vp2	40 +0.2	0.335 +0.02	146.9 +2.1	6.7 +1.2	98.3 -2.5	close	8 Ω vs 4 Ω: amp load changes	+
18 Sound 15NTLW2500	45 +5.2	0.3 -0.01	143 -1.8	8 +2.5	100.5 -0.3	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 15FH520-4	38 -1.8	0.337 +0.02	156.6 +11.8	7.8 +2.3	100.6 -0.2	close		+
Sica 15 Fe 3 CP	40.2 +0.4	0.33 +0.02	170.4 +25.6	5.5 =	99.4 -1.4	close	8 Ω vs 4 Ω: amp load changes	+
Fane FC-154F01	41 +1.2	0.287 -0.03	151 +6.2	6.5 +1	99.1 -1.7	close	8 Ω vs 4 Ω: amp load changes	+
BMS 15S330	39 -0.8	0.32 +0.01	152 +7.2	8 +2.5	98 -2.8	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 15N620-4 →

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.