Altec 3182

18" · 8 Ω · 180 W · 93.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	18 Hz
Qts	0.398
Qes	0.51
Qms	1.81
Vas	991.1 L
Sd	1140.6 cm²
Xmax	10.7 mm
Re	6.4 Ω
Bl	14.3 T·m
Mms	143.9 g
Pe	180 W
Sensitivity	93.5 dB

Alignment hint

EBP	35 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 459.6 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
Fostex FW 505	20 +2	0.404 +0.01	860 -131.1	8.5 -2.2	94.3 +0.8	close	Xmax 8.5 mm < 10.7 mm: lower excursion-limited SPL	+
Altec 3182 vp	20.3 +2.3	0.343 -0.05	1159.7 +168.6	10.2 -0.5	96.5 +3	usable	Xmax 10.2 mm < 10.7 mm: lower excursion-limited SPL	+
McCauley 6174	20 +2	0.336 -0.06	733.4 -257.7	15.2 +4.5	95.4 +1.9	usable		+
AE Speakers IB18HT-4ohm	18.4 +0.4	0.567 +0.17	632.1 -359	16.7 +6	94.5 +1	usable	4 Ω vs 8 Ω: amp load changes	+
AE Speakers IB18HT-8	18.4 +0.4	0.568 +0.17	632.1 -359	16.7 +6	91.5 -2	usable		+
Stereo Integrity HT 18	17 -1	0.383 -0.02	411.9 -579.2	25.1 +14.4	92.5 -1	usable	4 Ω vs 8 Ω: amp load changes	+
Dayton Audio RSS460HO-4	19.6 +1.6	0.387 -0.01	298 -693.1	12.8 +2.1	92.9 -0.6	risky	4 Ω vs 8 Ω: amp load changes	+
JBL 2245H	20 +2	0.24 -0.16	821.2 -169.9	8.5 -2.2	97.2 +3.7	risky	Xmax 8.5 mm < 10.7 mm: lower excursion-limited SPL	+
CSS Audio Maelstrom 18 DVC by Exodus Audio	17.4 -0.6	0.376 -0.02	313 -678.1	14.7 +4	91.2 -2.3	risky	4 Ω vs 8 Ω: amp load changes	+
Pyle Audio PPA18 vp	24.2 +6.2	0.39 -0.01	503.2 -487.9	6 -4.7	93.1 -0.4	risky	16 Ω vs 8 Ω: amp load changes · Xmax 6 mm < 10.7 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 3182 →

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.