BMS 12S330

12" · 8 Ω · 600 W · 96 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	28.6 Hz
Qts	0.24
Qes	0.25
Qms	5.9
Vas	85.5 L
Sd	498 cm²
Xmax	8 mm
Re	6 Ω
Bl	23 T·m
Mms	127 g
Pe	600 W
Sensitivity	96 dB

Alignment hint

EBP	114 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 11.1 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 12S330 v2016	28.6 =	0.24 =	85.5 =	8 =	92.3 -3.7	close		+
BMS 12N630	28.6 =	0.33 +0.09	85.5 =	8 =	96 =	close		+
Fane FC-123F01	34 +5.4	0.235 -0.01	110 +24.5	7.8 -0.2	96.1 +0.1	usable	Xmax 7.8 mm < 8 mm: lower excursion-limited SPL	+
DLS SP12	30.5 +1.9	0.237 =	98.8 +13.3	9.1 +1.1	100.5 +4.5	usable	2 Ω vs 8 Ω: amp load changes	+
Raveland BSW 124-II	28 -0.6	0.252 +0.01	91.4 +5.9	5.4 -2.6	94.7 -1.3	usable	4 Ω vs 8 Ω: amp load changes · 200 W vs 600 W: lower power handling · Xmax 5.4 mm < 8 mm: lower excursion-limited SPL	+
RCF L 12P300	40 +11.4	0.242 =	81 -4.5	7.8 -0.2	96.7 +0.7	usable	Xmax 7.8 mm < 8 mm: lower excursion-limited SPL	+
BMS 12S305	35 +6.4	0.265 +0.03	82 -3.5	11 +3	95 -1	usable		+
SICA 12SR3PL	27.4 -1.2	0.27 +0.03	103.1 +17.6	7 -1	94.8 -1.2	usable	4 Ω vs 8 Ω: amp load changes · 400 W vs 600 W: lower power handling · Xmax 7 mm < 8 mm: lower excursion-limited SPL	+
Beyma POWER 12 COMPETITION	29 +0.4	0.27 +0.03	122 +36.5	9 +1	95.1 -0.9	usable		+
BMS 12S330 v2018	28.6 =	0.295 +0.05	81.4 -4.1	8 =	91.1 -4.9	usable		+

Compare the closest 3 against the 12S330 →

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.