CSS Audio Maelstrom 18 DVC by Exodus Audio

18" · 4 Ω · 1000 W · 91.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	4 Ω
Fs	17.4 Hz
Qts	0.376
Qes	0.42
Qms	3.62
Vas	313 L
Sd	1182 cm²
Xmax	14.7 mm
Re	3.8 Ω
Bl	22.8 T·m
Mms	523.5 g
Pe	1000 W
Sensitivity	91.2 dB

Alignment hint

EBP	41 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 123.4 L

EBP < 50: favours a sealed (closed) 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
Stereo Integrity HST-18 Dual 2 Ohms	16.4 -1	0.388 +0.01	267 -46	19 +4.3	89.7 -1.5	close		+
Dayton Audio RSS460HO-4	19.6 +2.2	0.387 +0.01	298 -15	12.8 -1.9	92.9 +1.7	close	Xmax 12.8 mm < 14.7 mm: lower excursion-limited SPL	+
Stereo Integrity HST-18 MKII	15.6 -1.8	0.327 -0.05	307 -6	19 +4.3	90.4 -0.8	close		+
Stereo Integrity HT 18	17 -0.4	0.383 +0.01	411.9 +98.9	25.1 +10.4	92.5 +1.3	close		+
Stereo Integrity HST-18 MkIII	14.8 -2.6	0.357 -0.02	284 -29	19 +4.3	89.5 -1.7	usable		+
BMS 18N860	24 +6.6	0.372 =	304 -9	15 +0.3	93.7 +2.5	usable	8 Ω vs 4 Ω: amp load changes	+
Aura Sound NS18-992-4A	20 +2.6	0.47 +0.09	322 +9	14.5 -0.2	93.2 +2	usable	Xmax 14.5 mm < 14.7 mm: lower excursion-limited SPL	+
Dayton Audio SS18-22	21 +3.6	0.374 =	224 -89	12.8 -1.9	90.6 -0.6	usable	8 Ω vs 4 Ω: amp load changes · Xmax 12.8 mm < 14.7 mm: lower excursion-limited SPL	+
Dayton Audio RSS460HO-4 v2015	18.8 +1.4	0.322 -0.05	272 -41	11.9 -2.8	93.1 +1.9	usable	Xmax 11.9 mm < 14.7 mm: lower excursion-limited SPL	+
BMS 18N862 vp	24.8 +7.4	0.383 +0.01	345.6 +32.6	16.2 +1.5	94.8 +3.6	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the Maelstrom 18 DVC by Exodus Audio →

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.