B&C 18NBX100

18" · 4 Ω · 1200 W · 96 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	4 Ω
Fs	35 Hz
Qts	0.37
Qes	0.39
Qms	7
Vas	192 L
Sd	1210 cm²
Xmax	10 mm
Re	3.6 Ω
Bl	22 T·m
Mms	225 g
Pe	1200 W
Sensitivity	96 dB

Alignment hint

EBP	90 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 72.4 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
B&C 18NBX100	35 =	0.38 +0.01	198 +6	10 =	96.5 +0.5	close	8 Ω vs 4 Ω: amp load changes	+
B&C 18 SW 100	35 =	0.375 +0.01	180 -12	9.7 -0.3	96.9 +0.9	close	8 Ω vs 4 Ω: amp load changes · Xmax 9.7 mm < 10 mm: lower excursion-limited SPL	+
Beyma 18LEX1600/ND-8	35 =	0.39 +0.02	205 +13	10.4 +0.4	96.8 +0.8	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 18HP1060	35 =	0.37 =	200.3 +8.3	12.45 +2.45	98 +2	close	8 Ω vs 4 Ω: amp load changes	+
B&C 18SW100	35 =	0.38 +0.01	180 -12	12.5 +2.5	97 +1	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 18LEX1600Fe	34 -1	0.38 +0.01	188 -4	13 +3	97 +1	close	8 Ω vs 4 Ω: amp load changes	+
B&C 18TBW100	35 =	0.39 +0.02	175 -17	12 +2	96 =	close	8 Ω vs 4 Ω: amp load changes	+
Celestion POWER PRO X18	34.8 -0.2	0.379 +0.01	188.9 -3.1	8.6 -1.4	96.6 +0.6	close	8 Ω vs 4 Ω: amp load changes · Xmax 8.6 mm < 10 mm: lower excursion-limited SPL	+
18 Sound 18LW2420	34 -1	0.36 -0.01	196 +4	10 =	98 +2	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 18HW1070	32 -3	0.38 +0.01	195.9 +3.9	13 +3	97 +1	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 18NBX100 →

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.