Gladen SQX15

15" · 4 Ω · 700 W · 94.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	35.5 Hz
Qts	0.513
Qes	0.6
Qms	3.52
Vas	80.7 L
Sd	830 cm²
Xmax	7 mm
Re	2.8 Ω
Bl	15.8 T·m
Mms	240.5 g
Pe	700 W
Sensitivity	94.3 dB

Alignment hint

EBP	59 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 89.7 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
B&C 15 BG 100	36 +0.5	0.446 -0.07	83 +2.3	8 +1	92.9 -1.4	close	8 Ω vs 4 Ω: amp load changes	+
B&C 15BG100	36 +0.5	0.44 -0.07	83 +2.3	10.5 +3.5	94.5 +0.2	close	8 Ω vs 4 Ω: amp load changes	+
Ciare 15.00SW	38.2 +2.7	0.415 -0.1	77 -3.7	8.4 +1.4	92.6 -1.7	usable	8 Ω vs 4 Ω: amp load changes	+
FI Audio Q15 DUAL 2	32.1 -3.4	0.419 -0.09	75.6 -5.1	11.3 +4.3	94.1 -0.2	usable		+
Dayton Audio PA385S-8 v2018	37.7 +2.2	0.373 -0.14	80.4 -0.3	7.2 +0.2	93.6 -0.7	usable	8 Ω vs 4 Ω: amp load changes	+
Soundstream SPLX-152	38 +2.5	0.422 -0.09	65.4 -15.3	6.8 -0.2	94.1 -0.2	usable	Xmax 6.8 mm < 7 mm: lower excursion-limited SPL	+
JBL 15WT3000	41 +5.5	0.44 -0.07	76.3 -4.4	10.6 +3.6	92.5 -1.8	usable		+
B&C 15 PS 100 v2016	39 +3.5	0.436 -0.08	103 +22.3	7.2 +0.2	95 +0.7	usable	8 Ω vs 4 Ω: amp load changes	+
Focal 38WX	35 -0.5	0.471 -0.04	122.2 +41.5	6.8 -0.2	95.9 +1.6	usable	450 W vs 700 W: lower power handling · Xmax 6.8 mm < 7 mm: lower excursion-limited SPL	+
B&C 15BG76	44 +8.5	0.56 +0.05	68.4 -12.3	9.6 +2.6	93.4 -0.9	usable	8 Ω vs 4 Ω: amp load changes · 500 W vs 700 W: lower power handling	+

Compare the closest 3 against the SQX15 →

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.