Focal 27 V1

10" · 4 Ω · 250 W · 90.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	39 Hz
Qts	0.445
Qes	0.51
Qms	3.47
Vas	21.4 L
Sd	330 cm²
Xmax	4.9 mm
Re	2.9 Ω
Bl	12.9 T·m
Mms	118.6 g
Pe	250 W
Sensitivity	90.4 dB

Alignment hint

EBP	76 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 14 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 P	38.7 -0.3	0.454 +0.01	24.8 +3.4	5 +0.1	90.3 -0.1	close		+
hertz Hertz Audio HX250	37 -2	0.444 =	24 +2.6	5.3 +0.4	90.3 -0.1	close		+
Focal ACCESS 27A	41.3 +2.3	0.48 +0.03	21.2 -0.2	5 +0.1	90.8 +0.4	close		+
Kicker COMPVX 10	35.4 -3.6	0.403 -0.04	23 +1.6	5.2 +0.3	89.6 -0.8	close		+
Focal 11V 5552	40.5 +1.5	0.497 +0.05	24.1 +2.7	4.6 -0.3	90.8 +0.4	close	175 W vs 250 W: lower power handling · Xmax 4.6 mm < 4.9 mm: lower excursion-limited SPL	+
Gladen SQX10	38.8 -0.2	0.387 -0.06	24.5 +3.1	5 +0.1	91.3 +0.9	close		+
Peerless GBS-250F38CP01-04	37.7 -1.3	0.451 +0.01	23.9 +2.5	3.7 -1.2	89.8 -0.6	close	100 W vs 250 W: lower power handling · Xmax 3.7 mm < 4.9 mm: lower excursion-limited SPL	+
Oxygen AIR2 250	36.4 -2.6	0.502 +0.06	22.4 +1	5.8 +0.9	88.3 -2.1	close		+
Focal 11W 7670	44.6 +5.6	0.45 +0.01	22.9 +1.5	4.2 -0.7	92.1 +1.7	close	175 W vs 250 W: lower power handling · Xmax 4.2 mm < 4.9 mm: lower excursion-limited SPL	+
Focal SUB25KXE	38 -1	0.52 +0.08	20 -1.4	8.2 +3.3	91.7 +1.3	close	2 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 27 V1 →

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.