hertz Hertz Audio HX380D

15" · 8 Ω · 380 W · 91.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	27 Hz
Qts	0.402
Qes	0.43
Qms	6.2
Vas	130.6 L
Sd	851 cm²
Xmax	7 mm
Re	5.8 Ω
Bl	24.9 T·m
Mms	270.1 g
Pe	380 W
Sensitivity	91.1 dB

Alignment hint

EBP	63 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 62.4 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
Kicker 43CV152	26.4 -0.6	0.389 -0.01	121.4 -9.2	7.5 +0.5	92.5 +1.4	close	4 Ω vs 8 Ω: amp load changes	+
MTX Audio T615-22	25.7 -1.3	0.431 +0.03	110 -20.6	7.1 +0.1	92.1 +1	close	4 Ω vs 8 Ω: amp load changes	+
Dayton Audio SS15-22	27 =	0.388 -0.01	98 -32.6	10.3 +3.3	90.4 -0.7	close		+
18 Sound 15NTLS3500	28 +1	0.42 +0.02	141 +10.4	15.3 +8.3	89 -2.1	close		+
Stereo Integrity SQL-15 15	23.8 -3.2	0.418 +0.02	115 -15.6	12.1 +5.1	90.9 -0.2	close	4 Ω vs 8 Ω: amp load changes	+
Dayton Audio RSS390HO-4	24.2 -2.8	0.384 -0.02	109.7 -20.9	9.6 +2.6	91.5 +0.4	close	4 Ω vs 8 Ω: amp load changes	+
Ciare 15.00SW-4	29 +2	0.407 =	113 -17.6	11.1 +4.1	93.4 +2.3	close	4 Ω vs 8 Ω: amp load changes	+
JBL W15GTI	25.2 -1.8	0.476 +0.07	132.2 +1.6	10.2 +3.2	92.5 +1.4	close	4 Ω vs 8 Ω: amp load changes	+
JBL W15GTI MK2	25.2 -1.8	0.476 +0.07	132.2 +1.6	10.2 +3.2	92.5 +1.4	close	4 Ω vs 8 Ω: amp load changes	+
TC Sounds LMS R15	23.6 -3.4	0.446 +0.04	123 -7.6	12.1 +5.1	90.2 -0.9	usable	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the HX380D →

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.