B&C 18 RBX 100

18" · 8 Ω · 1000 W · 98.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	35 Hz
Qts	0.343
Qes	0.36
Qms	7.3
Vas	220 L
Sd	1225 cm²
Xmax	8.3 mm
Re	5.1 Ω
Bl	24.8 T·m
Mms	197.7 g
Pe	1000 W
Sensitivity	98.1 dB

Alignment hint

EBP	97 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 67.7 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 18 TBX 100	34 -1	0.352 +0.01	212 -8	9 +0.7	97.5 -0.6	close		+
PHL Audio 7201ND	34 -1	0.355 +0.01	230 +10	8.5 +0.2	97.5 -0.6	close		+
B&C 18TBX100	34 -1	0.35 +0.01	212 -8	9 +0.7	97 -1.1	close		+
Beyma 18P1200Nd	37 +2	0.339 =	198 -22	8.4 +0.1	98.3 +0.2	close		+
Faital PRO 18HP1010	35 =	0.31 -0.03	225.9 +5.9	9.75 +1.45	98 -0.1	close	4 Ω vs 8 Ω: amp load changes	+
18 Sound 18LW2400	35 =	0.31 -0.03	230 +10	9.5 +1.2	98 -0.1	close		+
Oberton 18B450	34.38 -0.62	0.342 =	241.55 +21.55	7.25 -1.05	98 -0.1	close	500 W vs 1000 W: lower power handling · Xmax 7.25 mm < 8.3 mm: lower excursion-limited SPL	+
RCF L 18P300 8 Ohms	33 -2	0.327 -0.02	226 +6	7.8 -0.5	97.8 -0.3	close	Xmax 7.8 mm < 8.3 mm: lower excursion-limited SPL	+
Sica 18 S 4 CP	33 -2	0.35 +0.01	225 +5	11 +2.7	97.1 -1	close		+
B&C 18 TBX 46 v2	34 -1	0.311 -0.03	227 +7	8.1 -0.2	98.2 +0.1	close	Xmax 8.1 mm < 8.3 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 18 RBX 100 →

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.