18 Sound 12LW1400

12" · 8 Ω · 900 W · 96 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	45 Hz
Qts	0.3
Qes	0.32
Qms	5
Vas	55 L
Sd	531 cm²
Xmax	8.25 mm
Re	5.2 Ω
Bl	20 T·m
Mms	88 g
Pe	900 W
Sensitivity	96 dB

Alignment hint

EBP	141 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 12.1 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
Faital PRO 12HP1010	45 =	0.34 +0.04	56.5 +1.5	9.25 +1	96 =	close	700 W vs 900 W: lower power handling	+
RCF LF12X401	45 =	0.27 -0.03	50 -5	9 +0.75	96.5 +0.5	close		+
Sica 12 PNS 4	41.7 -3.3	0.31 +0.01	50.2 -4.8	9.5 +1.25	94.5 -1.5	close		+
DAS Audio 12H	48 +3	0.302 =	57 +2	5.9 -2.35	96.1 +0.1	close	600 W vs 900 W: lower power handling · Xmax 5.9 mm < 8.25 mm: lower excursion-limited SPL	+
Beyma 12 P1000/Nd	47 +2	0.26 -0.04	49 -6	8 -0.25	96 =	close	Xmax 8 mm < 8.25 mm: lower excursion-limited SPL	+
Beyma 12LX60	42 -3	0.3 =	66 +11	9 +0.75	93.8 -2.2	close	700 W vs 900 W: lower power handling	+
18 Sound 12NLW9410	42 -3	0.26 -0.04	55 =	11 +2.75	95 -1	close		+
18 Sound 12NTLW2500	52 +7	0.31 +0.01	52.7 -2.3	7.6 -0.65	97.5 +1.5	close	4 Ω vs 8 Ω: amp load changes · 500 W vs 900 W: lower power handling · Xmax 7.6 mm < 8.25 mm: lower excursion-limited SPL	+
Precision Devices PD.12SB30	47 +2	0.31 +0.01	66.82 +11.82	7 -1.25	95.2 -0.8	close	400 W vs 900 W: lower power handling · Xmax 7 mm < 8.25 mm: lower excursion-limited SPL	+
PHL Audio 4310NDU	43 -2	0.291 -0.01	57 +2	5.6 -2.65	95.3 -0.7	close	500 W vs 900 W: lower power handling · Xmax 5.6 mm < 8.25 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 12LW1400 →

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.