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Hertz Audio HX 300

12" · 4 Ω · 600 W · 87.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size12"
Impedance4 Ω
Fs33 Hz
Qts0.47
Qes0.53
Qms4.4
Vas49.62 L
Sd502 cm²
Xmax14 mm
Re2.82 Ω
Bl13.57 T·m
Mms167 g
Pe600 W
Sensitivity87.1 dB

Alignment hint

EBP62 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 39.3 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

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
Focal SUB30KXE29 -40.454 -0.0250 +0.3810.8 -3.286.9 -0.2close8 Ω vs 4 Ω: amp load changes · Xmax 10.8 mm < 14 mm: lower excursion-limited SPL+
Focal E30KX29 -40.454 -0.0250 +0.3810.7 -3.386.9 -0.2close8 Ω vs 4 Ω: amp load changes · Xmax 10.7 mm < 14 mm: lower excursion-limited SPL+
Sony XS-GTR121L35 +20.46 -0.0150 +0.388.4 -5.688.3 +1.2usable400 W vs 600 W: lower power handling · Xmax 8.4 mm < 14 mm: lower excursion-limited SPL+
Audiomobile ELITE 221228 -50.48 +0.0159.46 +9.8412.7 -1.385.8 -1.3usableXmax 12.7 mm < 14 mm: lower excursion-limited SPL+
Pioneer TS-W306DVC32.9 -0.10.478 +0.0151.8 +2.188.3 -5.788.9 +1.8usable8 Ω vs 4 Ω: amp load changes · 400 W vs 600 W: lower power handling · Xmax 8.3 mm < 14 mm: lower excursion-limited SPL+
Ground Zero GZRW 12XD-AL29 -40.451 -0.0252 +2.389.2 -4.886.1 -1usable8 Ω vs 4 Ω: amp load changes · Xmax 9.2 mm < 14 mm: lower excursion-limited SPL+
Alpine SWR-1242D 1229 -40.47 =45 -4.629.1 -4.985.7 -1.4usable8 Ω vs 4 Ω: amp load changes · Xmax 9.1 mm < 14 mm: lower excursion-limited SPL+
Earthquake Sound SUBZERO-1226.8 -6.20.424 -0.0558.1 +8.4812.7 -1.386.2 -0.9usable8 Ω vs 4 Ω: amp load changes · Xmax 12.7 mm < 14 mm: lower excursion-limited SPL+
JBL W12GTI31.8 -1.20.508 +0.0444.8 -4.829.9 -4.190.1 +3usableXmax 9.9 mm < 14 mm: lower excursion-limited SPL+
JBL W12GTi MKII31.8 -1.20.508 +0.0444.8 -4.829.9 -4.190.1 +3usableXmax 9.9 mm < 14 mm: lower excursion-limited SPL+

Compare the closest 3 against the HX 300 →

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.