Klipsch K33-E

15" · 4 Ω · 100 W · 100.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	34.5 Hz
Qts	0.388
Qes	0.41
Qms	7.39
Vas	301.7 L
Sd	889.6 cm²
Xmax	4.1 mm
Re	3.39 Ω
Bl	11.8 T·m
Mms	78.4 g
Pe	100 W
Sensitivity	100.5 dB

Alignment hint

EBP	84 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 130 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
Beyma 15XM	36 +1.5	0.398 +0.01	310 +8.3	4 -0.1	98.9 -1.6	close	8 Ω vs 4 Ω: amp load changes · Xmax 4 mm < 4.1 mm: lower excursion-limited SPL	+
Beyma CM-15G	34 -0.5	0.375 -0.01	285 -16.7	5 +0.9	97.7 -2.8	close	8 Ω vs 4 Ω: amp load changes	+
Beyma SM115 vp2	35.4 +0.9	0.365 -0.02	295.8 -5.9	7.3 +3.2	98.2 -2.3	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 15SP	32 -2.5	0.412 +0.02	309 +7.3	4.3 +0.2	96.9 -3.6	close	8 Ω vs 4 Ω: amp load changes	+
Eminence KAPPA-15A	33 -1.5	0.32 -0.07	321.3 +19.6	4 -0.1	100.5 =	close	8 Ω vs 4 Ω: amp load changes · Xmax 4 mm < 4.1 mm: lower excursion-limited SPL	+
Audax PR38EX66UST	33 -1.5	0.344 -0.04	309 +7.3	4 -0.1	97.9 -2.6	close	8 Ω vs 4 Ω: amp load changes · Xmax 4 mm < 4.1 mm: lower excursion-limited SPL	+
Beyma SM115/N 8 ohms	35 +0.5	0.382 -0.01	267 -34.7	7.3 +3.2	97.5 -3	close	8 Ω vs 4 Ω: amp load changes	+
Beyma SM115/N v2015	35 +0.5	0.382 -0.01	267 -34.7	7.3 +3.2	97.5 -3	close	8 Ω vs 4 Ω: amp load changes	+
Beyma SM115 vp1	35.9 +1.4	0.355 -0.03	314.2 +12.5	7.3 +3.2	98.5 -2	close	8 Ω vs 4 Ω: amp load changes	+
Eminence LEGEND CB15	34 -0.5	0.339 -0.05	336 +34.3	4.8 +0.7	98.8 -1.7	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the K33-E →

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.