Focal 33V1

12" · 4 Ω · 400 W · 93 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	25.3 Hz
Qts	0.326
Qes	0.36
Qms	3.44
Vas	91.8 L
Sd	530.9 cm²
Xmax	7.5 mm
Re	2.6 Ω
Bl	14 T·m
Mms	171 g
Pe	400 W
Sensitivity	93 dB

Alignment hint

EBP	70 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 24.8 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
Atohm D300P04	26.5 +1.2	0.33 =	104 +12.2	7 -0.5	93 =	close	200 W vs 400 W: lower power handling · Xmax 7 mm < 7.5 mm: lower excursion-limited SPL	+
Focal 13W 8711	28.8 +3.5	0.328 =	87.1 -4.7	7.9 +0.4	93.4 +0.4	close		+
Focal 13W 8711 vp	28.8 +3.5	0.328 =	87.1 -4.7	7.9 +0.4	93.4 +0.4	close		+
Helix HXS 1206	25 -0.3	0.337 +0.01	107 +15.2	7 -0.5	93.6 +0.6	close	Xmax 7 mm < 7.5 mm: lower excursion-limited SPL	+
SICA 12 SR 3 PL vp	28.7 +3.4	0.317 -0.01	101.2 +9.4	7 -0.5	92.4 -0.6	close	8 Ω vs 4 Ω: amp load changes · Xmax 7 mm < 7.5 mm: lower excursion-limited SPL	+
hertz Hertz Audio ES300	28 +2.7	0.382 +0.06	89.4 -2.4	7.7 +0.2	93 =	close		+
PHL Audio 4020	29 +3.7	0.299 -0.03	92 +0.2	7 -0.5	92.1 -0.9	close	8 Ω vs 4 Ω: amp load changes · Xmax 7 mm < 7.5 mm: lower excursion-limited SPL	+
Dali A-12WD vp	27 +1.7	0.328 =	121 +29.2	8.8 +1.3	93.3 +0.3	close	8 Ω vs 4 Ω: amp load changes · 300 W vs 400 W: lower power handling	+
BMS 12N630	28.6 +3.3	0.33 =	85.5 -6.3	8 +0.5	96 +3	close	8 Ω vs 4 Ω: amp load changes	+
Mivoc AW 3000	27 +1.7	0.305 -0.02	97 +5.2	5.9 -1.6	93.9 +0.9	close	180 W vs 400 W: lower power handling · Xmax 5.9 mm < 7.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 33V1 →

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.