Focal P25DB

10" · 2 Ω · 250 W · 91.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	2 Ω
Fs	27.5 Hz
Qts	0.431
Qes	0.47
Qms	5.21
Vas	40.7 L
Sd	346.4 cm²
Xmax	7.5 mm
Re	1.7 Ω
Bl	9.3 T·m
Mms	138.7 g
Pe	250 W
Sensitivity	91.2 dB

Alignment hint

EBP	59 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 24.1 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
JBL GTO 1002D	27 -0.5	0.429 =	38.7 -2	6.3 -1.2	93.2 +2	close	Xmax 6.3 mm < 7.5 mm: lower excursion-limited SPL	+
Dayton Audio RSS265HF-4 v2012	26.2 -1.3	0.441 +0.01	45 +4.3	9.4 +1.9	87.8 -3.4	close	4 Ω vs 2 Ω: amp load changes	+
JBL GT4-10	29.6 +2.1	0.421 -0.01	36.1 -4.6	7.1 -0.4	88.6 -2.6	close	4 Ω vs 2 Ω: amp load changes · Xmax 7.1 mm < 7.5 mm: lower excursion-limited SPL	+
Morel ULTIMO 102	27 -0.5	0.391 -0.04	47.4 +6.7	13.4 +5.9	90.8 -0.4	close		+
Infinity 1062W 2-8	30.4 +2.9	0.426 -0.01	33.7 -7	6.5 -1	91.7 +0.5	close	Xmax 6.5 mm < 7.5 mm: lower excursion-limited SPL	+
Fusion NV-SW12	26.4 -1.1	0.438 +0.01	52.2 +11.5	7.5 =	94.4 +3.2	close	1 Ω vs 2 Ω: amp load changes	+
Ground Zero GZIW 250X	30.1 +2.6	0.44 +0.01	43.8 +3.1	7.5 =	85.9 -5.3	usable	4 Ω vs 2 Ω: amp load changes	+
Morel UW 1058	33 +5.5	0.434 =	40.6 -0.1	8.9 +1.4	86.7 -4.5	usable	8 Ω vs 2 Ω: amp load changes	+
JBL GT 1041D	26.4 -1.1	0.386 -0.04	52 +11.3	9 +1.5	91.9 +0.7	usable		+
Alpine SWA-10S4	32 +4.5	0.42 -0.01	41 +0.3	10 +2.5	86.6 -4.6	usable	4 Ω vs 2 Ω: amp load changes	+

Compare the closest 3 against the P25DB →

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.