Monacor SP-302E

12" · 4 Ω · 100 W · 95.3 dB

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	39 Hz
Qts	0.722
Qes	0.87
Qms	4.24
Vas	141 L
Sd	518 cm²
Xmax	4 mm
Re	3.6 Ω
Bl	6.7 T·m
Mms	44.4 g
Pe	100 W
Sensitivity	95.3 dB

Alignment hint

EBP	45 · sealed
Sealed Vb (Qtc ≈ 0.71)	Qts too high

EBP < 50: favours a sealed (closed) 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
Cabasse 30BZ18 v2	38.5 -0.5	0.747 +0.03	154.7 +13.7	4 =	92.8 -2.5	close	8 Ω vs 4 Ω: amp load changes	+
Lanzar VW124/12D	40 +1	0.763 +0.04	147.4 +6.4	10 +6	95.5 +0.2	close		+
AE Speakers LO12-D16	41.9 +2.9	0.67 -0.05	119.7 -21.3	7.4 +3.4	94.1 -1.2	usable	8 Ω vs 4 Ω: amp load changes	+
Visaton WS32AW vp de FREDO51	39 =	0.765 +0.04	115 -26	5 +1	91.5 -3.8	usable	8 Ω vs 4 Ω: amp load changes	+
Electro-Voice SP12C	45 +6	0.665 -0.06	167.1 +26.1	4 =	96.7 +1.4	usable	8 Ω vs 4 Ω: amp load changes · 50 W vs 100 W: lower power handling	+
Audax PR300T0	48 +9	0.824 +0.1	142 +1	3.5 -0.5	95.4 +0.1	usable	8 Ω vs 4 Ω: amp load changes · Xmax 3.5 mm < 4 mm: lower excursion-limited SPL	+
Focal W31B	40 +1	0.58 -0.14	125 -16	6 +2	95.8 +0.5	usable	8 Ω vs 4 Ω: amp load changes	+
AE Speakers LO12-D8 v2016	41.9 +2.9	0.67 -0.05	117.9 -23.1	7.4 +3.4	97.1 +1.8	usable		+
Audax LFP501	40 +1	0.521 -0.2	138 -3	4.5 +0.5	94.6 -0.7	usable	8 Ω vs 4 Ω: amp load changes	+
Audax PR30ST100	40 +1	0.521 -0.2	138 -3	4.5 +0.5	94.6 -0.7	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the SP-302E →

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.