B&C 18HTX100

18" · 8 Ω · 800 W · 100.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	44 Hz
Qts	0.323
Qes	0.34
Qms	6.3
Vas	173 L
Sd	1210 cm²
Xmax	5.7 mm
Re	5.4 Ω
Bl	26.1 T·m
Mms	155.2 g
Pe	800 W
Sensitivity	100.1 dB

Alignment hint

EBP	129 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 45.6 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
P.Audio C18-650EL	42 -2	0.311 -0.01	170 -3	5.3 -0.4	99.5 -0.6	close	Xmax 5.3 mm < 5.7 mm: lower excursion-limited SPL	+
Beyma 18G50	40 -4	0.321 =	212 +39	6 +0.3	99.3 -0.8	close		+
Celestion CF1830E	40.5 -3.5	0.342 +0.02	167.9 -5.1	5 -0.7	98.6 -1.5	close	Xmax 5 mm < 5.7 mm: lower excursion-limited SPL	+
PD PDN 18SB40	38.5 -5.5	0.326 =	201.3 +28.3	6 +0.3	98.6 -1.5	close	600 W vs 800 W: lower power handling	+
Precision Devices PDN 18SB40	38.5 -5.5	0.326 =	201.3 +28.3	6 +0.3	98.6 -1.5	close	600 W vs 800 W: lower power handling	+
P.Audio C18-650EL v2009	45 +1	0.375 +0.05	158.3 -14.7	5.3 -0.4	99.4 -0.7	close	Xmax 5.3 mm < 5.7 mm: lower excursion-limited SPL	+
STX W.46.1300.8.MC	36 -8	0.321 =	164 -9	5.5 -0.2	97.5 -2.6	close	Xmax 5.5 mm < 5.7 mm: lower excursion-limited SPL	+
Oberton 18XB1201	38.05 -5.95	0.317 -0.01	159.37 -13.63	10.5 +4.8	98.5 -1.6	close		+
RCF L 18S800	39 -5	0.29 -0.03	206 +33	6.3 +0.6	100.2 +0.1	close		+
RCF L 18S801	39 -5	0.29 -0.03	206 +33	6.3 +0.6	100.2 +0.1	close		+

Compare the closest 3 against the 18HTX100 →

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.