Klipsch SPL-120

12" · 8 Ω · 200 W · 89 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	31.1 Hz
Qts	0.507
Qes	0.554
Qms	5.994
Vas	58.4 L
Sd	518.8 cm²
Xmax	5.7 mm
Re	5.03 Ω
Bl	17.3 T·m
Mms	169 g
Pe	200 W
Sensitivity	89 dB

Alignment hint

EBP	56 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 61.8 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
Dayton Audio LS12-44	33.7 +2.6	0.503 =	56.6 -1.8	5.6 -0.1	88.1 -0.9	close	Xmax 5.6 mm < 5.7 mm: lower excursion-limited SPL	+
Focal P30	31.3 +0.2	0.508 =	63.9 +5.5	7.4 +1.7	91 +2	close	4 Ω vs 8 Ω: amp load changes	+
JBL STADIUM 1224	29.7 -1.4	0.473 -0.03	52.6 -5.8	6 +0.3	88.7 -0.3	close		+
JBL GTO 1214	28 -3.1	0.469 -0.04	58.2 -0.2	7.3 +1.6	89.4 +0.4	close	4 Ω vs 8 Ω: amp load changes	+
Monacor BLACKBASS-12 4 Ohms	29 -2.1	0.482 -0.03	61 +2.6	7.5 +1.8	90.1 +1.1	close	4 Ω vs 8 Ω: amp load changes	+
Infinity 120.3SE	28.4 -2.7	0.475 -0.03	55.6 -2.8	6.8 +1.1	89.5 +0.5	close	4 Ω vs 8 Ω: amp load changes	+
Powerbass S-1204D	31 -0.1	0.5 -0.01	65 +6.6	9.5 +3.8	87.2 -1.8	close	4 Ω vs 8 Ω: amp load changes	+
JL Audio 13TW5V2-2	27.6 -3.5	0.526 +0.02	60.3 +1.9	9 +3.3	89.2 +0.2	close	4 Ω vs 8 Ω: amp load changes	+
JBL S3-1224	29.1 -2	0.473 -0.03	52.6 -5.8	6 +0.3	88.4 -0.6	close		+
JBL S2-1224	32.4 +1.3	0.581 +0.07	59.7 +1.3	5.3 -0.4	89.1 +0.1	close	Xmax 5.3 mm < 5.7 mm: lower excursion-limited SPL	+

Compare the closest 3 against the SPL-120 →

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.