Fountek FW300B

12" · 8 Ω · 300 W · 91.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	28.3 Hz
Qts	0.306
Qes	0.392
Qms	1.398
Vas	127.2 L
Sd	514.7 cm²
Xmax	6 mm
Re	6.8 Ω
Bl	16.9 T·m
Mms	92.3 g
Pe	300 W
Sensitivity	91.4 dB

Alignment hint

EBP	72 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 29.3 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
Focal AUDIOM 13KX	28.8 +0.5	0.328 +0.02	127 -0.2	6 =	92.3 +0.9	close	225 W vs 300 W: lower power handling	+
Eton 12-612-C8/62RP	28 -0.3	0.319 +0.01	134 +6.8	6.3 +0.3	92.5 +1.1	close	150 W vs 300 W: lower power handling	+
Visaton TIW300 vp	28.9 +0.6	0.32 +0.01	125 -2.2	8.3 +2.3	92.5 +1.1	close		+
Eton 12-612/C8/62 RP	30 +1.7	0.32 +0.01	134 +6.8	8.5 +2.5	92.1 +0.7	close	150 W vs 300 W: lower power handling	+
Focal 13 VX	30 +1.7	0.323 +0.02	117 -10.2	6.8 +0.8	92.5 +1.1	close	225 W vs 300 W: lower power handling	+
SICA 12 SR 3 PL vp	28.7 +0.4	0.317 +0.01	101.2 -26	7 +1	92.4 +1	close		+
Dali A-12WD vp	27 -1.3	0.328 +0.02	121 -6.2	8.8 +2.8	93.3 +1.9	close		+
Dayton Audio ST305-8	29.6 +1.3	0.348 +0.04	128.1 +0.9	8 +2	92.9 +1.5	close		+
Magnat SUPREME 3000	29 +0.7	0.31 =	131 +3.8	8 +2	96.4 +5	close	4 Ω vs 8 Ω: amp load changes	+
JBL LE14A	28 -0.3	0.323 +0.02	147.3 +20.1	5.1 -0.9	92.8 +1.4	close	150 W vs 300 W: lower power handling · Xmax 5.1 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the FW300B →

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.