Ground Zero GZIW 250X

10" · 4 Ω · 250 W · 85.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	30.1 Hz
Qts	0.44
Qes	0.466
Qms	7.89
Vas	43.8 L
Sd	327 cm²
Xmax	7.5 mm
Re	3.35 Ω
Bl	11.5 T·m
Mms	97.2 g
Pe	250 W
Sensitivity	85.9 dB

Alignment hint

EBP	65 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 27.7 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
JL Audio 10WXV2-4	29.38 -0.72	0.45 +0.01	47 +3.2	10 +2.5	86.06 +0.16	close		+
Morel UW 1058	33 +2.9	0.434 -0.01	40.6 -3.2	8.9 +1.4	86.7 +0.8	close	8 Ω vs 4 Ω: amp load changes	+
Alpine SWA-10S4	32 +1.9	0.42 -0.02	41 -2.8	10 +2.5	86.6 +0.7	close		+
Dayton Audio RSS265HF-4 v2012	26.2 -3.9	0.441 =	45 +1.2	9.4 +1.9	87.8 +1.9	close		+
JL Audio 10W1V3-4	26.15 -3.95	0.446 +0.01	43.41 -0.39	11 +3.5	84.2 -1.7	close		+
JL Audio 10W1V2-8	26.5 -3.6	0.438 =	49.1009 +5.3	9.906 +2.41	84.7 -1.2	close	8 Ω vs 4 Ω: amp load changes	+
Kenwood KFC-W2509	35 +4.9	0.42 -0.02	44 +0.2	8 +0.5	88.2 +2.3	close	175 W vs 250 W: lower power handling	+
JL Audio 10W1V3-2	25.23 -4.87	0.436 =	44.15 +0.35	11 +3.5	83.9 -2	close	2 Ω vs 4 Ω: amp load changes	+
Infinity KAPPA PERFECT 10.1	28.35 -1.75	0.42 -0.02	38.511 -5.29	14.15 +6.65	84.8 -1.1	close		+
JBL GT4-10	29.6 -0.5	0.421 -0.02	36.1 -7.7	7.1 -0.4	88.6 +2.7	close	Xmax 7.1 mm < 7.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the GZIW 250X →

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.