Cabasse 30M20

12" · 8 Ω · 150 W · 96 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	34 Hz
Qts	0.454
Qes	0.52
Qms	3.56
Vas	220 L
Sd	490 cm²
Xmax	4.6 mm
Re	5.3 Ω
Bl	8.5 T·m
Mms	33.5 g
Pe	150 W
Sensitivity	96 dB

Alignment hint

EBP	65 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 154.3 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
Davis 31TPG-A	37 +3	0.448 -0.01	213 -7	4.5 -0.1	96.5 +0.5	close	Xmax 4.5 mm < 4.6 mm: lower excursion-limited SPL	+
Davis 31TPA-12G	37 +3	0.448 -0.01	213.5 -6.5	4.5 -0.1	97.4 +1.4	close	Xmax 4.5 mm < 4.6 mm: lower excursion-limited SPL	+
Audio Dynamique AD31TPA12G	37.2 +3.2	0.448 -0.01	213.6 -6.4	5 +0.4	97.5 +1.5	close		+
Sonido SCW-300	35 +1	0.401 -0.05	210 -10	4.5 -0.1	95 -1	close	50 W vs 150 W: lower power handling · Xmax 4.5 mm < 4.6 mm: lower excursion-limited SPL	+
Davis 31ST12 v2018	34.1 +0.1	0.428 -0.03	195.7 -24.3	5 +0.4	93.9 -2.1	close	100 W vs 150 W: lower power handling	+
Philips AD12100/M8	36 +2	0.464 +0.01	193.3 -26.7	6.2 +1.6	94.6 -1.4	close	100 W vs 150 W: lower power handling	+
Davis 31TCA12 vp rc1 g	39 +5	0.477 +0.02	202.9 -17.1	6 +1.4	96.1 +0.1	close		+
Audax PR300T4 série vp	37 +3	0.519 +0.07	220 =	4 -0.6	95.6 -0.4	close	Xmax 4 mm < 4.6 mm: lower excursion-limited SPL	+
Davis KIT ALBEDO	37.5 +3.5	0.459 +0.01	166 -54	5 +0.4	96.5 +0.5	close		+
Visaton W300-8	32 -2	0.449 -0.01	190 -30	7 +2.4	93.4 -2.6	close		+

Compare the closest 3 against the 30M20 →

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.