Ground Zero GZRW 12XD-AL

12" · 8 Ω · 500 W · 86.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	29 Hz
Qts	0.451
Qes	0.5
Qms	4.57
Vas	52 L
Sd	462 cm²
Xmax	9.2 mm
Re	7.8 Ω
Bl	22.2 T·m
Mms	173.3 g
Pe	500 W
Sensitivity	86.1 dB

Alignment hint

EBP	58 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 35.7 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
Focal E30KX	29 =	0.454 =	50 -2	10.7 +1.5	86.9 +0.8	close		+
Focal SUB30KXE	29 =	0.454 =	50 -2	10.8 +1.6	86.9 +0.8	close		+
Alpine SWR-1242D 12	29 =	0.47 +0.02	45 -7	9.1 -0.1	85.7 -0.4	close	Xmax 9.1 mm < 9.2 mm: lower excursion-limited SPL	+
Audiomobile ELITE 2212	28 -1	0.48 +0.03	59.46 +7.46	12.7 +3.5	85.8 -0.3	close	4 Ω vs 8 Ω: amp load changes	+
Alpine SWR-12D2 vp	27 -2	0.441 -0.01	46 -6	10 +0.8	87.8 +1.7	close		+
Earthquake Sound SUBZERO-12	26.8 -2.2	0.424 -0.03	58.1 +6.1	12.7 +3.5	86.2 +0.1	close		+
Rockford Fosgate P3D4-12	27.7 -1.3	0.517 +0.07	57.7 +5.7	9.4 +0.2	86.3 +0.2	close		+
Hertz Audio HX 300	33 +4	0.47 +0.02	49.62 -2.38	14 +4.8	87.1 +1	close	4 Ω vs 8 Ω: amp load changes	+
Rockford Fosgate T0D212	25.3 -3.7	0.473 +0.02	55 +3	10.5 +1.3	88 +1.9	close	4 Ω vs 8 Ω: amp load changes	+
Monacor BLACKBASS-12 8 Ohms	29 =	0.482 +0.03	61 +9	7.5 -1.7	87.1 +1	close	300 W vs 500 W: lower power handling · Xmax 7.5 mm < 9.2 mm: lower excursion-limited SPL	+

Compare the closest 3 against the GZRW 12XD-AL →

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.