the box 15LB075-UW4

15" · 4 Ω · 300 W · 99.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	40 Hz
Qts	0.382
Qes	0.4
Qms	8.48
Vas	158.9 L
Sd	900 cm²
Xmax	4 mm
Re	3.6 Ω
Bl	16 T·m
Mms	113.1 g
Pe	300 W
Sensitivity	99.5 dB

Alignment hint

EBP	100 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 65.5 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
Eminence KAPPA-15LFA	39 -1	0.38 =	159 +0.1	5.5 +1.5	99 -0.5	close	8 Ω vs 4 Ω: amp load changes	+
Eminence KAPPA 15 LFA vp1	40.9 +0.9	0.382 =	159.1 +0.2	5.5 +1.5	97.8 -1.7	close	8 Ω vs 4 Ω: amp load changes	+
Eminence KAPPA 15 LF	39 -1	0.384 =	159 +0.1	5.5 +1.5	97.3 -2.2	close	8 Ω vs 4 Ω: amp load changes	+
Eminence KAPPA 15 LFA	39 -1	0.384 =	159 +0.1	5.5 +1.5	97.3 -2.2	close	8 Ω vs 4 Ω: amp load changes	+
SICA 15 S 3 PL 4 Ohms	38.4 -1.6	0.373 -0.01	163.5 +4.6	6.5 +2.5	99.9 +0.4	close		+
Eminence KAPPALITE 3015 LF	42 +2	0.387 +0.01	158.8 -0.1	6.4 +2.4	98.3 -1.2	close	8 Ω vs 4 Ω: amp load changes	+
P.Audio P150/2226	41 +1	0.366 -0.02	154.8 -4.1	5.5 +1.5	98.3 -1.2	close	8 Ω vs 4 Ω: amp load changes	+
Focal 15PR75-212	42 +2	0.36 -0.02	162 +3.1	4.4 +0.4	98.3 -1.2	close	8 Ω vs 4 Ω: amp load changes · 212 W vs 300 W: lower power handling	+
Eminence KILOMAX PRO 15	41 +1	0.383 =	154.5 -4.4	7.9 +3.9	98.3 -1.2	close	8 Ω vs 4 Ω: amp load changes	+
Eminence KILOMAX PRO 15 A	41 +1	0.383 =	154.5 -4.4	7.9 +3.9	98.3 -1.2	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 15LB075-UW4 →

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.