B&C 15SW115

15" · 8 Ω · 1700 W · 96 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	35 Hz
Qts	0.24
Qes	0.25
Qms	4.4
Vas	110 L
Sd	855 cm²
Xmax	13.5 mm
Re	5.2 Ω
Bl	30 T·m
Mms	200 g
Pe	1700 W
Sensitivity	96 dB

Alignment hint

EBP	140 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 14.3 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
18 Sound 15NLW4500	35 =	0.26 +0.02	111 +1	14.5 +1	96.3 +0.3	close		+
B&C 15SW115	34 -1	0.22 -0.02	105 -5	13.5 =	96 =	close	4 Ω vs 8 Ω: amp load changes	+
B&C 15 SW 115	35 =	0.237 =	110 =	8.8 -4.7	96.6 +0.6	close	Xmax 8.8 mm < 13.5 mm: lower excursion-limited SPL	+
Beyma 15QLEX1600Fe	33 -2	0.21 -0.03	102 -8	13 -0.5	96 =	close	Xmax 13 mm < 13.5 mm: lower excursion-limited SPL	+
Faital PRO 15XL2400	32 -3	0.21 -0.03	113.9 +3.9	17.67 +4.17	96 =	close		+
18 Sound 15NLW4500	35 =	0.2 -0.04	126 +16	14.5 +1	96.6 +0.6	close	4 Ω vs 8 Ω: amp load changes	+
B&C 15SW100	37 +2	0.28 +0.04	99.5 -10.5	12.5 -1	95 -1	close	4 Ω vs 8 Ω: amp load changes · Xmax 12.5 mm < 13.5 mm: lower excursion-limited SPL	+
B&C 15NBX100	37 +2	0.27 +0.03	109.6 -0.4	10 -3.5	95 -1	usable	4 Ω vs 8 Ω: amp load changes · 1000 W vs 1700 W: lower power handling · Xmax 10 mm < 13.5 mm: lower excursion-limited SPL	+
B&C 15TBX100	35 =	0.28 +0.04	113 +3	9 -4.5	96 =	usable	1000 W vs 1700 W: lower power handling · Xmax 9 mm < 13.5 mm: lower excursion-limited SPL	+
B&C 15SW100	37 +2	0.31 +0.07	110 =	12.5 -1	95 -1	usable	Xmax 12.5 mm < 13.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 15SW115 →

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 (1)

15" Bass Reflexsubbass reflex