← all drivers

Focal 27 F

10" · 4 Ω · 150 W · 92.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size10"
Impedance4 Ω
Fs43.7 Hz
Qts0.82
Qes0.87
Qms14.4
Vas45.5 L
Sd339.8 cm²
Xmax5.8 mm
Re2.9 Ω
Bl6.6 T·m
Mms47.2 g
Pe150 W
Sensitivity92.8 dB

Alignment hint

EBP50 · 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

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
Focal 11V 545148.6 +4.90.825 +0.0139 -6.55.1 -0.793 +0.2closeXmax 5.1 mm < 5.8 mm: lower excursion-limited SPL+
Focal 10V149.7 +60.822 =42.5 -34.9 -0.993.7 +0.9closeXmax 4.9 mm < 5.8 mm: lower excursion-limited SPL+
Pioneer TS-W254F39.2 -4.50.765 -0.0536.2 -9.39.7 +3.990.3 -2.5usable+
JBL GT2-1043.9 +0.20.572 -0.2537.9 -7.65.7 -0.193.2 +0.4usableXmax 5.7 mm < 5.8 mm: lower excursion-limited SPL+
Audax HT240G048.9 +5.20.672 -0.1535.8 -9.75.5 -0.394 +1.2usableXmax 5.5 mm < 5.8 mm: lower excursion-limited SPL+
MTX Audio T4101240.1 -3.60.744 -0.0839.1 -6.46.2 +0.486.2 -6.6usable16 Ω vs 4 Ω: amp load changes+
MTX Audio RTX10858.7 +150.727 -0.0937.1 -8.45.7 -0.193.5 +0.7usable8 Ω vs 4 Ω: amp load changes · Xmax 5.7 mm < 5.8 mm: lower excursion-limited SPL+
Dayton Audio PA255-8 v201750.5 +6.80.612 -0.2141.2 -4.35 -0.892.7 -0.1usable8 Ω vs 4 Ω: amp load changes · Xmax 5 mm < 5.8 mm: lower excursion-limited SPL+
Skytronic SP 100052 +8.31.064 +0.2451.6 +6.16 +0.290.6 -2.2usable8 Ω vs 4 Ω: amp load changes+
Sphynx SP-W250-PP43 -0.70.794 -0.0365.8 +20.34 -1.890.1 -2.7usable8 Ω vs 4 Ω: amp load changes · 80 W vs 150 W: lower power handling · Xmax 4 mm < 5.8 mm: lower excursion-limited SPL+

Compare the closest 3 against the 27 F →

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.