Gladen SQX12

12" · 4 Ω · 600 W · 92.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	36.7 Hz
Qts	0.405
Qes	0.44
Qms	5.07
Vas	40.9 L
Sd	490 cm²
Xmax	7 mm
Re	3.2 Ω
Bl	16.1 T·m
Mms	154.8 g
Pe	600 W
Sensitivity	92.6 dB

Alignment hint

EBP	83 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 20 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
Pioneer TS-W307D2	33.9 -2.8	0.435 +0.03	42.2 +1.3	7.1 +0.1	94.9 +2.3	close	2 Ω vs 4 Ω: amp load changes · 400 W vs 600 W: lower power handling	+
Celestion FTR12-4080DL/4	35.3 -1.4	0.428 +0.02	51.4 +10.5	8 +1	92.5 -0.1	close		+
B&C 12 BG 100	39 +2.3	0.333 -0.07	41 +0.1	7.8 +0.8	92.4 -0.2	close	8 Ω vs 4 Ω: amp load changes	+
Dayton Audio TITANIC	36.3 -0.4	0.506 +0.1	44 +3.1	7.4 +0.4	92 -0.6	close		+
Sica 12 SR 3 CP	37 +0.3	0.4 -0.01	60.9 +20	8 +1	92.2 -0.4	close	8 Ω vs 4 Ω: amp load changes · 450 W vs 600 W: lower power handling	+
Soundstream SPLX-122	35 -1.7	0.322 -0.08	40.2 -0.7	8 +1	92 -0.6	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 12RS550	42 +5.3	0.37 -0.04	45.4 +4.5	9.25 +2.25	93 +0.4	close	8 Ω vs 4 Ω: amp load changes	+
B&C 12BG100	39 +2.3	0.33 -0.08	41 +0.1	10.5 +3.5	93 +0.4	close	8 Ω vs 4 Ω: amp load changes	+
Focal 33K	38.4 +1.7	0.415 +0.01	51.1 +10.2	5.9 -1.1	93.5 +0.9	close	400 W vs 600 W: lower power handling · Xmax 5.9 mm < 7 mm: lower excursion-limited SPL	+
Massive Audio REBEL 124	32.6 -4.1	0.485 +0.08	38 -2.9	7.1 +0.1	92.4 -0.2	close	2 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the SQX12 →

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.