Cabasse 30BZ18 v2

12" · 8 Ω · 80 W · 92.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	38.5 Hz
Qts	0.747
Qes	0.82
Qms	8.45
Vas	154.7 L
Sd	506 cm²
Xmax	4 mm
Re	7.08 Ω
Bl	9.1 T·m
Mms	39.6 g
Pe	80 W
Sensitivity	92.8 dB

Alignment hint

EBP	47 · 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
Monacor SP-302E	39 +0.5	0.722 -0.03	141 -13.7	4 =	95.3 +2.5	close	4 Ω vs 8 Ω: amp load changes	+
Lanzar VW124/12D	40 +1.5	0.763 +0.02	147.4 -7.3	10 +6	95.5 +2.7	close	4 Ω vs 8 Ω: amp load changes	+
Visaton WS32AW vp de FREDO51	39 +0.5	0.765 +0.02	115 -39.7	5 +1	91.5 -1.3	close		+
Jamo 20325	32 -6.5	0.849 +0.1	163.4 +8.7	5 +1	93 +0.2	usable	4 Ω vs 8 Ω: amp load changes	+
Infinity 1200WIB vp	35 -3.5	0.789 +0.04	116 -38.7	5.1 +1.1	92.8 =	usable	4 Ω vs 8 Ω: amp load changes	+
Monacor SP-302C	33 -5.5	0.607 -0.14	155 +0.3	5 +1	94.3 +1.5	usable	4 Ω vs 8 Ω: amp load changes	+
Electro-Voice SP12C	45 +6.5	0.665 -0.08	167.1 +12.4	4 =	96.7 +3.9	usable	50 W vs 80 W: lower power handling	+
AE Speakers LO12-D16	41.9 +3.4	0.67 -0.08	119.7 -35	7.4 +3.4	94.1 +1.3	usable		+
Technysound TS 30/300 vp	44 +5.5	0.929 +0.18	178 +23.3	4 =	94.4 +1.6	usable		+
Fane SOVEREIGN 12-125	47 +8.5	0.796 +0.05	113.2 -41.5	4.9 +0.9	93.8 +1	usable		+

Compare the closest 3 against the 30BZ18 v2 →

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.