JBL CS12

12" · 4 Ω · 250 W · 92.7 dB

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	24.7 Hz
Qts	0.388
Qes	0.41
Qms	7.34
Vas	144 L
Sd	517 cm²
Xmax	6 mm
Re	3.58 Ω
Bl	12.1 T·m
Mms	108 g
Pe	250 W
Sensitivity	92.7 dB

Alignment hint

EBP	60 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 62 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
HiVi F12 v2009	26 +1.3	0.367 -0.02	145.6 +1.6	6 =	91.1 -1.6	close	8 Ω vs 4 Ω: amp load changes · 100 W vs 250 W: lower power handling	+
Peerless XXLS-P835017	22 -2.7	0.386 =	136 -8	7.8 +1.8	92.6 -0.1	close	120 W vs 250 W: lower power handling	+
Eton 12-680-62 HEX	26 +1.3	0.343 -0.04	150 +6	6 =	91.6 -1.1	close	8 Ω vs 4 Ω: amp load changes	+
Peerless XXLS-P835017 v2026	23 -1.7	0.426 +0.04	133 -11	7.5 +1.5	92.5 -0.2	close	150 W vs 250 W: lower power handling	+
Dayton Audio SD315A-88	24.2 -0.5	0.335 -0.05	151.7 +7.7	6.4 +0.4	93.7 +1	close	120 W vs 250 W: lower power handling	+
Infinity KAPPA 120.1SE	22.5 -2.2	0.359 -0.03	146.5 +2.5	11.2 +5.2	92.4 -0.3	close		+
HiVi F12	25 +0.3	0.37 -0.02	173.9 +29.9	6 =	90.7 -2	close	8 Ω vs 4 Ω: amp load changes · 100 W vs 250 W: lower power handling	+
HiVi D10.8	24 -0.7	0.413 +0.02	147.3 +3.3	8 +2	89.5 -3.2	close	8 Ω vs 4 Ω: amp load changes · 150 W vs 250 W: lower power handling	+
Peerless XXLS12-8+8	21.8 -2.9	0.357 -0.03	144.2 +0.2	9.7 +3.7	93.1 +0.4	close	175 W vs 250 W: lower power handling	+
Philips AD12100W8 vp doum2	29.3 +4.6	0.399 +0.01	165 +21	6 =	92.5 -0.2	close	8 Ω vs 4 Ω: amp load changes · 100 W vs 250 W: lower power handling	+

Compare the closest 3 against the CS12 →

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.