LaVoce NBASS12-30

12" · 8 Ω · 400 W · 97.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	46 Hz
Qts	0.26
Qes	0.27
Qms	5.56
Vas	68.63 L
Sd	531 cm²
Xmax	6.6 mm
Re	5.2 Ω
Bl	19.53 T·m
Mms	69.7 g
Pe	400 W
Sensitivity	97.5 dB

Alignment hint

EBP	170 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 10.7 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
Oberton 12B401	46.63 +0.63	0.245 -0.02	69.6 +0.97	6.75 +0.15	97 -0.5	close		+
Faital PRO 12FH530	45 -1	0.26 =	74.1 +5.47	7.5 +0.9	98 +0.5	close		+
Faital PRO 12FH510	45 -1	0.25 -0.01	75.2 +6.57	7.5 +0.9	97 -0.5	close	4 Ω vs 8 Ω: amp load changes	+
Faital PRO 12FH520	50 +4	0.27 +0.01	65.5 -3.13	7 +0.4	97 -0.5	close	4 Ω vs 8 Ω: amp load changes	+
Monacor SP-12/500FH	45 -1	0.251 -0.01	76.2 +7.57	6.4 -0.2	98.2 +0.7	close	Xmax 6.4 mm < 6.6 mm: lower excursion-limited SPL	+
RCF LF12P903	47 +1	0.23 -0.03	65 -3.63	7 +0.4	97.8 +0.3	close		+
18 Sound 12W750	49 +3	0.28 +0.02	73 +4.37	8 +1.4	97 -0.5	close		+
BMS 12N620	44.7 -1.3	0.25 -0.01	72.7 +4.07	5.5 -1.1	98 +0.5	close	Xmax 5.5 mm < 6.6 mm: lower excursion-limited SPL	+
Oberton 12B450	46.29 +0.29	0.235 -0.03	71.75 +3.12	7.75 +1.15	99 +1.5	close		+
B&C 12NDL76	50 +4	0.27 +0.01	69 +0.37	7 +0.4	100 +2.5	close	16 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the NBASS12-30 →

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.