Peavey 1801-4

18" · 4 Ω · 350 W · 101 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	4 Ω
Fs	37.3 Hz
Qts	0.448
Qes	0.474
Qms	8.19
Vas	335.6 L
Sd	1240 cm²
Xmax	5 mm
Re	3.72 Ω
Bl	14.7 T·m
Mms	116.9 g
Pe	350 W
Sensitivity	101 dB

Alignment hint

EBP	79 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 225 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
Peavey 1801-4 v1993	40.6 +3.3	0.464 +0.02	330 -5.6	5 =	102.1 +1.1	close		+
JBL 2042H	39 +1.7	0.404 -0.04	337 +1.4	7.1 +2.1	101.3 +0.3	close	8 Ω vs 4 Ω: amp load changes	+
JBL 2241G	35 -2.3	0.4 -0.05	310 -25.6	7.5 +2.5	101.9 +0.9	close		+
Selenium 18SWS1100	34 -3.3	0.447 =	316 -19.6	9.3 +4.3	97.8 -3.2	close	8 Ω vs 4 Ω: amp load changes	+
Selenium WPU1805	34 -3.3	0.447 =	316 -19.6	4.3 -0.7	97.1 -3.9	close	8 Ω vs 4 Ω: amp load changes · Xmax 4.3 mm < 5 mm: lower excursion-limited SPL	+
JBL 2241H	35 -2.3	0.4 -0.05	310 -25.6	7.6 +2.6	98.9 -2.1	usable	8 Ω vs 4 Ω: amp load changes	+
Beyma SM118/N	36 -1.3	0.492 +0.04	300 -35.6	5.5 +0.5	97.2 -3.8	usable	8 Ω vs 4 Ω: amp load changes	+
DAS Audio S1846 vp1	36.3 -1	0.403 -0.04	389.4 +53.8	8 +3	98.7 -2.3	usable	8 Ω vs 4 Ω: amp load changes	+
Sica 18 F 3 CP	31.6 -5.7	0.44 -0.01	321 -14.6	6.5 +1.5	96.9 -4.1	usable	8 Ω vs 4 Ω: amp load changes	+
Beyma 18G400	36 -1.3	0.374 -0.07	300 -35.6	6 +1	99.2 -1.8	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 1801-4 →

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.