JBL 2142H

12" · 8 Ω · 100 W · 96.5 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	72 Hz
Qts	0.755
Qes	0.92
Qms	4.2
Vas	45.3 L
Sd	527.1 cm²
Xmax	2.2 mm
Re	5.2 Ω
Bl	10.4 T·m
Mms	42 g
Pe	100 W
Sensitivity	96.5 dB

Alignment hint

EBP	78 · flexible
Sealed Vb (Qtc ≈ 0.71)	Qts too high

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
Celestion F12-X200	75 +3	0.777 +0.02	47.3 +2	3 +0.8	97.1 +0.6	close		+
Celestion G12T-100	81 +9	0.833 +0.08	47 +1.7	2 -0.2	96.8 +0.3	close	Xmax 2 mm < 2.2 mm: lower excursion-limited SPL	+
Celestion F12M-150 Triple Cone	69.4 -2.6	0.906 +0.15	46.9 +1.6	2.3 +0.1	95.2 -1.3	close		+
ERS HP30/150E-8	60.4 -11.6	0.715 -0.04	45.9 +0.6	2.8 +0.6	93.2 -3.3	usable		+
SICA 12 D 1.5 CS 8 Ohms	62 -10	0.748 -0.01	63.5 +18.2	2.7 +0.5	96.8 +0.3	usable		+
Sica 12 D 1.5 CS	62 -10	0.75 -0.01	63.5 +18.2	2.7 +0.5	96.9 +0.4	usable		+
Celestion G12T 75	85 +13	0.836 +0.08	51 +5.7	2 -0.2	95.3 -1.2	usable	16 Ω vs 8 Ω: amp load changes · 75 W vs 100 W: lower power handling · Xmax 2 mm < 2.2 mm: lower excursion-limited SPL	+
Siemens KL405	75.8 +3.8	0.77 +0.02	68 +22.7	3 +0.8	99.2 +2.7	usable		+
Fane 12-100TC	56 -16	0.779 +0.02	56.1 +10.8	2.5 +0.3	93.5 -3	usable		+
Europsonic TS30/600PRO-8 vp	60.8 -11.2	0.717 -0.04	36.9 -8.4	4 +1.8	93.2 -3.3	usable		+

Compare the closest 3 against the 2142H →

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.