Focal 13W 8711

12" · 4 Ω · 400 W · 93.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	28.8 Hz
Qts	0.328
Qes	0.34
Qms	9.13
Vas	87.1 L
Sd	551.5 cm²
Xmax	7.9 mm
Re	3.5 Ω
Bl	16.7 T·m
Mms	149.5 g
Pe	400 W
Sensitivity	93.4 dB

Alignment hint

EBP	85 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 23.9 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
Focal 13W 8711 vp	28.8 =	0.328 =	87.1 =	7.9 =	93.4 =	close		+
BMS 12N630	28.6 -0.2	0.33 =	85.5 -1.6	8 +0.1	96 +2.6	close	8 Ω vs 4 Ω: amp load changes	+
Auditor RIP 300P	28.9 +0.1	0.35 +0.02	79.3 -7.8	8.8 +0.9	92.6 -0.8	close		+
Focal 33V1	25.3 -3.5	0.326 =	91.8 +4.7	7.5 -0.4	93 -0.4	close	Xmax 7.5 mm < 7.9 mm: lower excursion-limited SPL	+
Magnat XTC300	30 +1.2	0.317 -0.01	81 -6.1	6.9 -1	93.8 +0.4	close	300 W vs 400 W: lower power handling · Xmax 6.9 mm < 7.9 mm: lower excursion-limited SPL	+
hertz Hertz Audio ES300	28 -0.8	0.382 +0.05	89.4 +2.3	7.7 -0.2	93 -0.4	close	Xmax 7.7 mm < 7.9 mm: lower excursion-limited SPL	+
Hertz Audio ES 300	28 -0.8	0.38 +0.05	89.4 +2.3	9 +1.1	94 +0.6	close		+
SICA 12 SR 3 PL vp	28.7 -0.1	0.317 -0.01	101.2 +14.1	7 -0.9	92.4 -1	close	8 Ω vs 4 Ω: amp load changes · Xmax 7 mm < 7.9 mm: lower excursion-limited SPL	+
Atohm D300P04 v2008	29.7 +0.9	0.352 +0.02	83.2 -3.9	6.4 -1.5	93.2 -0.2	close	200 W vs 400 W: lower power handling · Xmax 6.4 mm < 7.9 mm: lower excursion-limited SPL	+
Atohm D300P04 v2019	29.7 +0.9	0.352 +0.02	83.2 -3.9	6.4 -1.5	93.2 -0.2	close	200 W vs 400 W: lower power handling · Xmax 6.4 mm < 7.9 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 13W 8711 →

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.