Eminence KL3012CX-8

12" · 8 Ω · 400 W · 97.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	42 Hz
Qts	0.299
Qes	0.31
Qms	8.37
Vas	111.5 L
Sd	545.4 cm²
Xmax	3.7 mm
Re	5.7 Ω
Bl	16.1 T·m
Mms	53.7 g
Pe	400 W
Sensitivity	97.7 dB

Alignment hint

EBP	135 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 24.3 L

EBP > 100: favours a ported (bass-reflex) 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
Supravox 285 GMF vp richard	40 -2	0.298 =	108 -3.5	3.7 =	97.1 -0.6	close	70 W vs 400 W: lower power handling	+
Selenium 12PW5	43 +1	0.314 +0.02	108 -3.5	3.7 =	97.5 -0.2	close	300 W vs 400 W: lower power handling	+
PHL Audio 4510	42 =	0.307 +0.01	108 -3.5	6 +2.3	97.3 -0.4	close	300 W vs 400 W: lower power handling	+
PHL Audio 4550	45 +3	0.289 -0.01	106 -5.5	4 +0.3	98.3 +0.6	close	250 W vs 400 W: lower power handling	+
Beyma SM112-N2	40 -2	0.298 =	117.3 +5.8	5.9 +2.2	96.9 -0.8	close	250 W vs 400 W: lower power handling	+
Fane SOVEREIGN PRO 12-500	43 +1	0.314 +0.02	107 -4.5	6 +2.3	97.4 -0.3	close		+
Monacor SP-12/200PA	45 +3	0.328 +0.03	114 +2.5	4 +0.3	97.4 -0.3	close	200 W vs 400 W: lower power handling	+
Beyma SM112/N v2021	40 -2	0.298 =	117 +5.5	7 +3.3	96.9 -0.8	close		+
PHL Audio 4500	42 =	0.274 -0.02	108 -3.5	5.7 +2	99 +1.3	close	300 W vs 400 W: lower power handling	+
Beyma 12G125	41 -1	0.269 -0.03	122 +10.5	4 +0.3	97.2 -0.5	close	125 W vs 400 W: lower power handling	+

Compare the closest 3 against the KL3012CX-8 →

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.