Fountek FW322 - 4 Ohms

12" · 4 Ω · 300 W · 94.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	41.8 Hz
Qts	0.36
Qes	0.43
Qms	2.21
Vas	40.6 L
Sd	514.7 cm²
Xmax	4 mm
Re	3.4 Ω
Bl	16.6 T·m
Mms	132.6 g
Pe	300 W
Sensitivity	94.1 dB

Alignment hint

EBP	97 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 14.2 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
PHL Audio 4021 vp kaz1	40.4 -1.4	0.354 -0.01	46.3 +5.7	5.5 +1.5	92.8 -1.3	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 12RS550	42 +0.2	0.37 +0.01	45.4 +4.8	9.25 +5.25	93 -1.1	close	8 Ω vs 4 Ω: amp load changes	+
PD PDN 12SB40	47.2 +5.4	0.382 +0.02	45.1 +4.5	6 +2	94.2 +0.1	close	8 Ω vs 4 Ω: amp load changes	+
Precision Devices PDN 12SB40	47.2 +5.4	0.382 +0.02	45.1 +4.5	6 +2	94.2 +0.1	close	8 Ω vs 4 Ω: amp load changes	+
B&C 12 BG 100	39 -2.8	0.333 -0.03	41 +0.4	7.8 +3.8	92.4 -1.7	close	8 Ω vs 4 Ω: amp load changes	+
Radian 2312-8	46.7 +4.9	0.36 =	51.3 +10.7	4.9 +0.9	93.6 -0.5	close	8 Ω vs 4 Ω: amp load changes	+
Beyma POWER 12	45 +3.2	0.378 +0.02	31.6 -9	4.5 +0.5	93.8 -0.3	close		+
Pioneer TS-W1200PRO	40 -1.8	0.376 +0.02	45.6 +5	5.8 +1.8	91.3 -2.8	close	8 Ω vs 4 Ω: amp load changes	+
B&C 12BG100	39 -2.8	0.33 -0.03	41 +0.4	10.5 +6.5	93 -1.1	close	8 Ω vs 4 Ω: amp load changes	+
Beyma POWER 12 vp	42.7 +0.9	0.358 =	53.1 +12.5	5.9 +1.9	96.2 +2.1	close		+

Compare the closest 3 against the FW322 - 4 Ohms →

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.