Fostex FP 253 N

10" · 8 Ω · 50 W · 94.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	8 Ω
Fs	37 Hz
Qts	0.429
Qes	0.45
Qms	9.03
Vas	141 L
Sd	330 cm²
Xmax	1.9 mm
Re	7.2 Ω
Bl	8.6 T·m
Mms	20 g
Pe	50 W
Sensitivity	94.4 dB

Alignment hint

EBP	82 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 82.1 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
Sonido SWR-250	37 =	0.399 -0.03	146 +5	1.8 -0.1	94.1 -0.3	close	15 W vs 50 W: lower power handling · Xmax 1.8 mm < 1.9 mm: lower excursion-limited SPL	+
Sonido SWR-250A	35 -2	0.419 -0.01	160 +19	1.8 -0.1	93.8 -0.6	close	15 W vs 50 W: lower power handling · Xmax 1.8 mm < 1.9 mm: lower excursion-limited SPL	+
Sonido SCW-250	37 =	0.399 -0.03	125 -16	3 +1.1	94.3 -0.1	close	30 W vs 50 W: lower power handling	+
AB Sound TW 1041	32 -5	0.433 =	158 +17	8 +6.1	93.3 -1.1	usable		+
Samy Speaker TW1041	32 -5	0.433 =	158 +17	8 +6.1	93.3 -1.1	usable		+
Visaton W250S	31 -6	0.401 -0.03	140 -1	7 +5.1	92.2 -2.2	usable		+
Samy Speaker 299-284	33 -4	0.472 +0.04	182.9 +41.9	4 +2.1	93.9 -0.5	usable		+
Carpower SP-252C	35 -2	0.409 -0.02	96 -45	5 +3.1	94.8 +0.4	usable	4 Ω vs 8 Ω: amp load changes	+
Monacor SP-250C	35 -2	0.409 -0.02	96 -45	5 +3.1	94.8 +0.4	usable	4 Ω vs 8 Ω: amp load changes	+
Europsonic HP25/100 v2015	37 =	0.425 =	86.1 -54.9	3.5 +1.6	92.3 -2.1	usable		+

Compare the closest 3 against the FP 253 N →

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.