B&C 15 SW 115-4

15" · 4 Ω · 1700 W · 98.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	34 Hz
Qts	0.221
Qes	0.23
Qms	5.8
Vas	105 L
Sd	855 cm²
Xmax	8.4 mm
Re	3.2 Ω
Bl	25.2 T·m
Mms	213.9 g
Pe	1700 W
Sensitivity	98.5 dB

Alignment hint

EBP	148 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 11.4 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 15SW115	34 =	0.22 =	105 =	13.5 +5.1	96 -2.5	close		+
B&C 15 SW 115	35 +1	0.237 +0.02	110 +5	8.8 +0.4	96.6 -1.9	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 15QLEX1600Fe	33 -1	0.21 -0.01	102 -3	13 +4.6	96 -2.5	close	8 Ω vs 4 Ω: amp load changes	+
B&C 15NW100	33 -1	0.22 =	139 +34	9 +0.6	97 -1.5	close	8 Ω vs 4 Ω: amp load changes · 1000 W vs 1700 W: lower power handling	+
B&C 15SW115	35 +1	0.24 +0.02	110 +5	13.5 +5.1	96 -2.5	close	8 Ω vs 4 Ω: amp load changes	+
B&C 15NW100	34 =	0.23 +0.01	126.1 +21.1	9 +0.6	95 -3.5	close	1000 W vs 1700 W: lower power handling	+
Oberton 15PD601	38.2 +4.2	0.228 +0.01	133.31 +28.31	8.5 +0.1	98 -0.5	close	8 Ω vs 4 Ω: amp load changes · 600 W vs 1700 W: lower power handling	+
B&C 15 NW 100	33 -1	0.218 =	139 +34	7.4 -1	97.3 -1.2	close	8 Ω vs 4 Ω: amp load changes · 1000 W vs 1700 W: lower power handling · Xmax 7.4 mm < 8.4 mm: lower excursion-limited SPL	+
Faital PRO 15XL2400	32 -2	0.21 -0.01	113.9 +8.9	17.67 +9.27	96 -2.5	close	8 Ω vs 4 Ω: amp load changes	+
RCF LF15N401	34 =	0.22 =	160 +55	9 +0.6	97 -1.5	usable	8 Ω vs 4 Ω: amp load changes · 900 W vs 1700 W: lower power handling	+

Compare the closest 3 against the 15 SW 115-4 →

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.