Fonestar FPW 350

12" · 8 Ω · 175 W · 91.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	52 Hz
Qts	0.876
Qes	1.1
Qms	4.3
Vas	65 L
Sd	550 cm²
Xmax	3.7 mm
Re	7 Ω
Bl	11.3 T·m
Mms	61.1 g
Pe	175 W
Sensitivity	91.8 dB

Alignment hint

EBP	47 · sealed
Sealed Vb (Qtc ≈ 0.71)	Qts too high

EBP < 50: favours a sealed (closed) 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
Siare 31TE vp	53.4 +1.4	0.746 -0.13	62 -3	4.1 +0.4	93.8 +2	close	120 W vs 175 W: lower power handling	+
Mercuriale PTR 306 M0	58 +6	0.808 -0.07	70.1 +5.1	3.9 +0.2	94.6 +2.8	close		+
Technysound TS 30/300	48.6 -3.4	0.663 -0.21	65 =	4 +0.3	92.1 +0.3	usable		+
Visaton WS32AW	45 -7	0.857 -0.02	47 -18	3.7 =	88.9 -2.9	usable		+
Fountek FW300DV vp 2 aimants	46.3 -5.7	0.885 +0.01	43 -22	4.2 +0.5	88.4 -3.4	usable		+
Fane 12-100TC	56 +4	0.779 -0.1	56.1 -8.9	2.5 -1.2	93.5 +1.7	usable	100 W vs 175 W: lower power handling · Xmax 2.5 mm < 3.7 mm: lower excursion-limited SPL	+
Fane 12-250TC SOVEREIGN	50 -2	0.658 -0.22	78.1 +13.1	3.5 -0.2	93.8 +2	usable	Xmax 3.5 mm < 3.7 mm: lower excursion-limited SPL	+
Fane SOVEREIGN 12-250TC	50 -2	0.658 -0.22	78.1 +13.1	3.5 -0.2	93.8 +2	usable	Xmax 3.5 mm < 3.7 mm: lower excursion-limited SPL	+
Fane SOVEREIGN 12-200LT	50 -2	0.655 -0.22	78.1 +13.1	5.3 +1.6	93.8 +2	usable		+
Celestion TF 1215	62 +10	0.857 -0.02	69 +4	2.5 -1.2	96.2 +4.4	usable	Xmax 2.5 mm < 3.7 mm: lower excursion-limited SPL	+

Compare the closest 3 against the FPW 350 →

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.