Fonestar FPW 250

10" · 8 Ω · 125 W · 90.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	8 Ω
Fs	55 Hz
Qts	0.825
Qes	1
Qms	4.7
Vas	38 L
Sd	344 cm²
Xmax	3.9 mm
Re	7 Ω
Bl	9.4 T·m
Mms	36.6 g
Pe	125 W
Sensitivity	90.6 dB

Alignment hint

EBP	55 · flexible
Sealed Vb (Qtc ≈ 0.71)	Qts too high

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
Eltax MILLENIUM 500 GRAVE vp	54.6 -0.4	0.95 +0.13	38 =	4.4 +0.5	88.7 -1.9	close		+
Focal 11V 5451	48.6 -6.4	0.825 =	39 +1	5.1 +1.2	93 +2.4	close	4 Ω vs 8 Ω: amp load changes	+
Peavey SHEFFIELD TVX 1035 8	49.3 -5.7	0.722 -0.1	38.7 +0.7	3.4 -0.5	90.5 -0.1	close	75 W vs 125 W: lower power handling · Xmax 3.4 mm < 3.9 mm: lower excursion-limited SPL	+
Focal 10V1	49.7 -5.3	0.822 =	42.5 +4.5	4.9 +1	93.7 +3.1	close	4 Ω vs 8 Ω: amp load changes	+
Fenton PS10 vp	57.6 +2.6	0.657 -0.17	37.9 -0.1	3.8 -0.1	92.1 +1.5	close	Xmax 3.8 mm < 3.9 mm: lower excursion-limited SPL	+
MTX Audio RTX108	58.7 +3.7	0.727 -0.1	37.1 -0.9	5.7 +1.8	93.5 +2.9	usable		+
Focal 10C 5401	56.5 +1.5	0.796 -0.03	43.1 +5.1	3.2 -0.7	94.6 +4	usable	4 Ω vs 8 Ω: amp load changes · 60 W vs 125 W: lower power handling · Xmax 3.2 mm < 3.9 mm: lower excursion-limited SPL	+
Fenton PS10	60 +5	0.684 -0.14	41.2 +3.2	4 +0.1	93.1 +2.5	usable		+
Fenton PS10 vp2	59.9 +4.9	1.01 +0.19	41.2 +3.2	3.2 -0.7	90.4 -0.2	usable	16 Ω vs 8 Ω: amp load changes · Xmax 3.2 mm < 3.9 mm: lower excursion-limited SPL	+
Focal 27 F	43.7 -11.3	0.82 -0.01	45.5 +7.5	5.8 +1.9	92.8 +2.2	usable	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the FPW 250 →

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.