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Stereo Integrity HST-18 MKII

18" · 4 Ω · 2000 W · 90.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size18"
Impedance4 Ω
Fs15.6 Hz
Qts0.327
Qes0.35
Qms5
Vas307 L
Sd1178.4 cm²
Xmax19 mm
Re3.8 Ω
Bl26.5 T·m
Mms660 g
Pe2000 W
Sensitivity90.4 dB

Alignment hint

EBP45 · sealed
Sealed Vb (Qtc ≈ 0.71)≈ 83.5 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

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
Stereo Integrity HST-18 MkIII14.8 -0.80.357 +0.03284 -2319 =89.5 -0.9close+
Stereo Integrity HST-18 Dual 2 Ohms16.4 +0.80.388 +0.06267 -4019 =89.7 -0.7close+
CSS Audio Maelstrom 18 DVC by Exodus Audio17.4 +1.80.376 +0.05313 +614.7 -4.391.2 +0.8usable1000 W vs 2000 W: lower power handling · Xmax 14.7 mm < 19 mm: lower excursion-limited SPL+
Stereo Integrity HT 1817 +1.40.383 +0.06411.9 +104.925.1 +6.192.5 +2.1usable+
TC Sounds LMS-ULTRA 540020.5 +4.90.325 =240.7 -66.316 -393.1 +2.7usableXmax 16 mm < 19 mm: lower excursion-limited SPL+
Dayton Audio RSS460HO-4 v201518.8 +3.20.322 -0.01272 -3511.9 -7.193.1 +2.7usable900 W vs 2000 W: lower power handling · Xmax 11.9 mm < 19 mm: lower excursion-limited SPL+
BMS 18N86225.1 +9.50.34 +0.01312 +519 =95 +4.6usable8 Ω vs 4 Ω: amp load changes · 1500 W vs 2000 W: lower power handling+
Dayton Audio RSS460HO-419.6 +40.387 +0.06298 -912.8 -6.292.9 +2.5usable900 W vs 2000 W: lower power handling · Xmax 12.8 mm < 19 mm: lower excursion-limited SPL+
BMS 18N86024 +8.40.372 +0.04304 -315 -493.7 +3.3usable8 Ω vs 4 Ω: amp load changes · 1500 W vs 2000 W: lower power handling · Xmax 15 mm < 19 mm: lower excursion-limited SPL+
Dayton Audio SS18-2221 +5.40.374 +0.05224 -8312.8 -6.290.6 +0.2usable8 Ω vs 4 Ω: amp load changes · 1300 W vs 2000 W: lower power handling · Xmax 12.8 mm < 19 mm: lower excursion-limited SPL+

Compare the closest 3 against the HST-18 MKII →

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.