Focal 27 V2

10" · 4 Ω · 300 W · 90.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	38.5 Hz
Qts	0.629
Qes	0.71
Qms	5.52
Vas	21.3 L
Sd	336.5 cm²
Xmax	5.5 mm
Re	2.1 Ω
Bl	9.5 T·m
Mms	127.1 g
Pe	300 W
Sensitivity	90.1 dB

Alignment hint

EBP	54 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 80.8 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
Auditor 250 S	42.1 +3.6	0.631 =	20.5 -0.8	5 -0.5	89 -1.1	close	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
Sony XS-L104P5B	37.7 -0.8	0.569 -0.06	19.3 -2	6 +0.5	87.8 -2.3	close		+
MTX Audio RT10-04 vp	38.3 -0.2	0.711 +0.08	21.6 +0.3	5.1 -0.4	87.2 -2.9	close	Xmax 5.1 mm < 5.5 mm: lower excursion-limited SPL	+
Fusion PF-SW100D4	45.3 +6.8	0.642 +0.01	19.3 -2	5.8 +0.3	88.1 -2	close	8 Ω vs 4 Ω: amp load changes	+
hertz Hertz Audio ES 250.5	35 -3.5	0.609 -0.02	27.7 +6.4	6.6 +1.1	89 -1.1	usable		+
Focal SUB25KXE	38 -0.5	0.52 -0.11	20 -1.3	8.2 +2.7	91.7 +1.6	usable	2 Ω vs 4 Ω: amp load changes	+
MTX Audio 5510-44	33.6 -4.9	0.63 =	29.2 +7.9	7.2 +1.7	90.1 =	usable	2 Ω vs 4 Ω: amp load changes	+
Pioneer TS-W257D4 DVC	39.7 +1.2	0.546 -0.08	18.2 -3.1	5.3 -0.2	92.2 +2.1	usable	2 Ω vs 4 Ω: amp load changes · Xmax 5.3 mm < 5.5 mm: lower excursion-limited SPL	+
Oxygen AIR2 250	36.4 -2.1	0.502 -0.13	22.4 +1.1	5.8 +0.3	88.3 -1.8	usable		+
Focal ACCESS 27A	41.3 +2.8	0.48 -0.15	21.2 -0.1	5 -0.5	90.8 +0.7	usable	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 27 V2 →

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.