Fane COLOSSUS 18B

18" · 8 Ω · 400 W · 99.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	30.5 Hz
Qts	0.197
Qes	0.207
Qms	4.03
Vas	320 L
Sd	1120 cm²
Xmax	4 mm
Re	6.35 Ω
Bl	29.7 T·m
Mms	149.6 g
Pe	400 W
Sensitivity	99.4 dB

Alignment hint

EBP	147 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 26.9 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
JBL 2243H	30 -0.5	0.192 -0.01	338.1 +18.1	4.3 +0.3	100.4 +1	close	300 W vs 400 W: lower power handling	+
Celestion BX18-4085	30 -0.5	0.2 =	337 +17	3.4 -0.6	99.8 +0.4	close	150 W vs 400 W: lower power handling · Xmax 3.4 mm < 4 mm: lower excursion-limited SPL	+
Fane COLOSSUS 18 BASS	28 -2.5	0.188 -0.01	366 +46	3.8 -0.2	99.2 -0.2	close	200 W vs 400 W: lower power handling · Xmax 3.8 mm < 4 mm: lower excursion-limited SPL	+
Radian 2218 NEO SUBWOOFER	28.9 -1.6	0.219 +0.02	333 +13	6.3 +2.3	98.9 -0.5	close		+
JBL E155-8	30 -0.5	0.2 =	424.8 +104.8	5.1 +1.1	100.4 +1	close	300 W vs 400 W: lower power handling	+
Radian 2218Neo	30 -0.5	0.23 +0.03	312 -8	9 +5	99 -0.4	close		+
PD PD 184C01	30 -0.5	0.227 +0.03	337.1 +17.1	7.8 +3.8	100.2 +0.8	close		+
Precision Devices PD 184C01	30 -0.5	0.227 +0.03	337.1 +17.1	7.8 +3.8	100.2 +0.8	close		+
Monacor SPA-46	30 -0.5	0.25 +0.05	285 -35	4 =	99.8 +0.4	close	4 Ω vs 8 Ω: amp load changes · 300 W vs 400 W: lower power handling	+
Oberton 18NSW700-8	30.5 =	0.243 +0.05	309 -11	7.7 +3.7	98.6 -0.8	close		+

Compare the closest 3 against the COLOSSUS 18B →

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.