B&C 18 TBX 46 v2

18" · 8 Ω · 1000 W · 98.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	34 Hz
Qts	0.311
Qes	0.33
Qms	5.3
Vas	227 L
Sd	1210 cm²
Xmax	8.1 mm
Re	5.2 Ω
Bl	25.8 T·m
Mms	198.1 g
Pe	1000 W
Sensitivity	98.2 dB

Alignment hint

EBP	103 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 54.4 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
Faital PRO 18HP1010	35 +1	0.31 =	225.9 -1.1	9.75 +1.65	98 -0.2	close	4 Ω vs 8 Ω: amp load changes	+
18 Sound 18LW2400	35 +1	0.31 =	230 +3	9.5 +1.4	98 -0.2	close		+
Beyma 18" P1000Fe V2/S	33 -1	0.32 +0.01	230 +3	8 -0.1	98 -0.2	close	Xmax 8 mm < 8.1 mm: lower excursion-limited SPL	+
Beyma 18P1000FE	33 -1	0.32 +0.01	230 +3	8 -0.1	97.8 -0.4	close	Xmax 8 mm < 8.1 mm: lower excursion-limited SPL	+
18 Sound 18LW2420	34 =	0.31 =	208 -19	10 +1.9	98 -0.2	close	4 Ω vs 8 Ω: amp load changes	+
18 Sound 18LW2400	33 -1	0.32 +0.01	235 +8	9.5 +1.4	98 -0.2	close	4 Ω vs 8 Ω: amp load changes	+
RCF L 18P300 8 Ohms	33 -1	0.327 +0.02	226 -1	7.8 -0.3	97.8 -0.4	close	Xmax 7.8 mm < 8.1 mm: lower excursion-limited SPL	+
PD PD 185N002	36 +2	0.297 -0.01	226 -1	7.8 -0.3	98.7 +0.5	close	Xmax 7.8 mm < 8.1 mm: lower excursion-limited SPL	+
Precision Devices PD 185N002	36 +2	0.297 -0.01	226 -1	7.8 -0.3	98.7 +0.5	close	Xmax 7.8 mm < 8.1 mm: lower excursion-limited SPL	+
Peavey LO MAX 18	33.5 -0.5	0.318 +0.01	249.7 +22.7	9.5 +1.4	97.7 -0.5	close		+

Compare the closest 3 against the 18 TBX 46 v2 →

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.