B&C 18SW115

18" · 4 Ω · 1700 W · 96 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	4 Ω
Fs	34 Hz
Qts	0.3
Qes	0.31
Qms	6.1
Vas	149.1 L
Sd	1210 cm²
Xmax	14 mm
Re	3.3 Ω
Bl	26 T·m
Mms	304 g
Pe	1700 W
Sensitivity	96 dB

Alignment hint

EBP	110 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 32.7 L

EBP > 100: favours a ported (bass-reflex) 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
B&C 18DS100	34 =	0.29 -0.01	155 +5.9	14.5 +0.5	97.5 +1.5	close	8 Ω vs 4 Ω: amp load changes	+
18 Sound 18NLW4500	35 +1	0.33 +0.03	151 +1.9	15.3 +1.3	97 +1	close	8 Ω vs 4 Ω: amp load changes	+
18 Sound 18NTLW5000	32 -2	0.3 =	165 +15.9	17.5 +3.5	95 -1	close		+
Oberton 18NXB1600	32.37 -1.63	0.303 =	173.11 +24.01	13.5 -0.5	97 +1	close	8 Ω vs 4 Ω: amp load changes · Xmax 13.5 mm < 14 mm: lower excursion-limited SPL	+
18 Sound 18NLW4500	37 +3	0.31 +0.01	127 -22.1	14.75 +0.75	96.5 +0.5	close		+
B&C 18SW115	32 -2	0.3 =	187 +37.9	14 =	97 +1	close	8 Ω vs 4 Ω: amp load changes	+
Oberton 18XB1301DS	35.7 +1.7	0.302 =	172.9 +23.8	12 -2	97.5 +1.5	close	8 Ω vs 4 Ω: amp load changes · 1300 W vs 1700 W: lower power handling · Xmax 12 mm < 14 mm: lower excursion-limited SPL	+
18 Sound 18NLW9000	34 =	0.31 +0.01	206 +56.9	14 =	97 +1	close	8 Ω vs 4 Ω: amp load changes	+
18 Sound 18NTLW5000	32 -2	0.32 +0.02	176 +26.9	17.5 +3.5	95 -1	close	8 Ω vs 4 Ω: amp load changes	+
B&C 18TBW100	33 -1	0.32 +0.02	181.5 +32.4	12 -2	96 =	close	Xmax 12 mm < 14 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 18SW115 →

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.