Aura Sound NS12-794-4A

12" · 4 Ω · 400 W · 90.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	27 Hz
Qts	0.423
Qes	0.45
Qms	7.1
Vas	78 L
Sd	487 cm²
Xmax	9.9 mm
Re	3.5 Ω
Bl	14 T·m
Mms	148.1 g
Pe	400 W
Sensitivity	90.9 dB

Alignment hint

EBP	60 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 43.5 L

EBP 50-100: works in either a sealed or ported 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
JL Audio 12W3V3-4	26.7 -0.3	0.446 +0.02	80.6 +2.6	10.9 +1	90.6 -0.3	close		+
Infinity 1230W	27.3 +0.3	0.437 +0.01	78.5 +0.5	7.9 -2	91 +0.1	close	300 W vs 400 W: lower power handling · Xmax 7.9 mm < 9.9 mm: lower excursion-limited SPL	+
Morel ULTIMO 124	26 -1	0.421 =	73.8 -4.2	14.6 +4.7	89 -1.9	close		+
Rockford Fosgate S2-124	27 =	0.498 +0.08	77 -1	10.7 +0.8	89.9 -1	close		+
Powerbass M-124	29.15 +2.15	0.41 -0.01	77.3 -0.7	9.5 -0.4	88 -2.9	close	Xmax 9.5 mm < 9.9 mm: lower excursion-limited SPL	+
Focal SUB12	24 -3	0.407 -0.02	90 +12	9.8 -0.1	90.7 -0.2	close	300 W vs 400 W: lower power handling · Xmax 9.8 mm < 9.9 mm: lower excursion-limited SPL	+
Rythmik Audio DS1200	26 -1	0.444 +0.02	88 +10	8.8 -1.1	91.7 +0.8	close	Xmax 8.8 mm < 9.9 mm: lower excursion-limited SPL	+
Dayton Audio TS320D-4 TITANIC MK 4	28.3 +1.3	0.453 +0.03	64.1 -13.9	9.8 -0.1	90.7 -0.2	close	Xmax 9.8 mm < 9.9 mm: lower excursion-limited SPL	+
Ground Zero GZUW 300SQ	25.3 -1.7	0.423 =	86.6 +8.6	12.9 +3	88 -2.9	close	8 Ω vs 4 Ω: amp load changes	+
Focal P30F	28 +1	0.467 +0.04	70 -8	9.1 -0.8	90.1 -0.8	close	Xmax 9.1 mm < 9.9 mm: lower excursion-limited SPL	+

Compare the closest 3 against the NS12-794-4A →

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.