Selenium 18SW1P

18" · 8 Ω · 800 W · 97.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	37 Hz
Qts	0.442
Qes	0.46
Qms	11.45
Vas	232 L
Sd	1194 cm²
Xmax	8.7 mm
Re	5.5 Ω
Bl	21 T·m
Mms	159.4 g
Pe	800 W
Sensitivity	97.7 dB

Alignment hint

EBP	80 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 148.8 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
DAS Audio 18LXN	38.5 +1.5	0.45 +0.01	213.7 -18.3	8 -0.7	97.2 -0.5	close	Xmax 8 mm < 8.7 mm: lower excursion-limited SPL	+
Turbosound TS-18SW700/8A	35 -2	0.433 -0.01	250 +18	7.5 -1.2	97.7 =	close	Xmax 7.5 mm < 8.7 mm: lower excursion-limited SPL	+
Beyma 18"LX60V2/S	35 -2	0.48 +0.04	236 +4	8 -0.7	98 +0.3	close	Xmax 8 mm < 8.7 mm: lower excursion-limited SPL	+
Faital PRO 18HP1010	35 -2	0.4 -0.04	240.1 +8.1	9.75 +1.05	98 +0.3	close		+
B&C 18 TBX 100 (prodance)	36.6 -0.4	0.406 -0.04	198 -34	9 +0.3	97.4 -0.3	close		+
Beyma 18LX60V2	35 -2	0.485 +0.04	236.5 +4.5	8 -0.7	97 -0.7	close	Xmax 8 mm < 8.7 mm: lower excursion-limited SPL	+
Faital PRO 18HP1042	38 +1	0.41 -0.03	191.9 -40.1	9 +0.3	98 +0.3	close		+
SB Audience 18SW800	33 -4	0.456 +0.01	258.1 +26.1	9.3 +0.6	96.8 -0.9	close		+
Beyma 18"LEX1600Nd	33 -4	0.43 -0.01	231 -1	14.5 +5.8	96 -1.7	close		+
P.Audio P180/2242	37 =	0.48 +0.04	231.72 -0.28	7 -1.7	95.5 -2.2	close	Xmax 7 mm < 8.7 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 18SW1P →

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.