Dayton Audio UM18-22 v2015

18" · 8 Ω · 1000 W · 88.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	19.5 Hz
Qts	0.533
Qes	0.62
Qms	3.82
Vas	212 L
Sd	1219 cm²
Xmax	12.6 mm
Re	4.4 Ω
Bl	23.9 T·m
Mms	654.5 g
Pe	1000 W
Sensitivity	88.6 dB

Alignment hint

EBP	31 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 278.9 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
Dayton Audio UM18-22 18	19.5 =	0.487 -0.05	216.8 +4.8	12.2 -0.4	89 +0.4	close	Xmax 12.2 mm < 12.6 mm: lower excursion-limited SPL	+
Dayton Audio UMII18-22 ULTIMAX II DVC	22 +2.5	0.53 =	248.2 +36.2	13.8 +1.2	90.7 +2.1	close		+
Dayton Audio SS18-22	21 +1.5	0.374 -0.16	224 +12	12.8 +0.2	90.6 +2	usable		+
FI Audio HT-3	21.3 +1.8	0.423 -0.11	235.9 +23.9	17 +4.4	92.9 +4.3	usable	4 Ω vs 8 Ω: amp load changes	+
Aura Sound NS18-992-4A	20 +0.5	0.47 -0.06	322 +110	14.5 +1.9	93.2 +4.6	usable	4 Ω vs 8 Ω: amp load changes	+
Stereo Integrity HST-18 Dual 2 Ohms	16.4 -3.1	0.388 -0.15	267 +55	19 +6.4	89.7 +1.1	usable	4 Ω vs 8 Ω: amp load changes	+
Dayton Audio RSS460HO-4	19.6 +0.1	0.387 -0.15	298 +86	12.8 +0.2	92.9 +4.3	usable	4 Ω vs 8 Ω: amp load changes	+
Kicker S15L7	26.3 +6.8	0.539 +0.01	149.1 -62.9	7.3 -5.3	89.4 +0.8	usable	500 W vs 1000 W: lower power handling · Xmax 7.3 mm < 12.6 mm: lower excursion-limited SPL	+
CSS Audio Maelstrom 18 DVC by Exodus Audio	17.4 -2.1	0.376 -0.16	313 +101	14.7 +2.1	91.2 +2.6	usable	4 Ω vs 8 Ω: amp load changes	+
TC Sounds LMS-ULTRA 5400	20.5 +1	0.325 -0.21	240.7 +28.7	16 +3.4	93.1 +4.5	usable	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the UM18-22 v2015 →

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.