Eminence BETA 12CX

12" · 8 Ω · 250 W · 97.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	43 Hz
Qts	0.474
Qes	0.51
Qms	6.69
Vas	161 L
Sd	532.4 cm²
Xmax	3.5 mm
Re	5.57 Ω
Bl	10 T·m
Mms	33.8 g
Pe	250 W
Sensitivity	97.5 dB

Alignment hint

EBP	84 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 131.4 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
LaVoce LBASS12-15	38 -5	0.48 +0.01	160.93 -0.07	4.7 +1.2	95.5 -2	close	100 W vs 250 W: lower power handling	+
Davis KIT ALBEDO	37.5 -5.5	0.459 -0.01	166 +5	5 +1.5	96.5 -1	close	150 W vs 250 W: lower power handling	+
Eminence BETA 12CX v2019	47 +4	0.476 =	120.9 -40.1	3.5 =	97.5 =	close		+
Conrad PA 12	42.9 -0.1	0.462 -0.01	129.2 -31.8	4 +0.5	95.2 -2.3	close		+
Eminence BETA 12CX	47 +4	0.48 +0.01	120.94 -40.06	3.5 =	97.3 -0.2	close		+
MCM Electronics 55-3233	42 -1	0.459 -0.01	122.6 -38.4	4.9 +1.4	98 +0.5	close	4 Ω vs 8 Ω: amp load changes · 120 W vs 250 W: lower power handling	+
Supravox 285-2000EXC_07V	53 +10	0.485 +0.01	158 -3	4 +0.5	99.5 +2	close	70 W vs 250 W: lower power handling	+
Monacor SP-300PA	40 -3	0.435 -0.04	150 -11	3.3 -0.2	95.3 -2.2	close	175 W vs 250 W: lower power handling · Xmax 3.3 mm < 3.5 mm: lower excursion-limited SPL	+
Goodmans AXIOM 201	42.5 -0.5	0.421 -0.05	157.7 -3.3	2.5 -1	97.5 =	close	30 W vs 250 W: lower power handling · Xmax 2.5 mm < 3.5 mm: lower excursion-limited SPL	+
Pioneer TS-A2503i vp	41 -2	0.579 +0.1	162 +1	5 +1.5	98.2 +0.7	close	4 Ω vs 8 Ω: amp load changes · 80 W vs 250 W: lower power handling	+

Compare the closest 3 against the BETA 12CX →

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.