Fane COLOSSUS 12BM

12" · 8 Ω · 450 W · 98.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	43 Hz
Qts	0.211
Qes	0.22
Qms	5.1
Vas	89 L
Sd	550 cm²
Xmax	5.3 mm
Re	5.4 Ω
Bl	20.8 T·m
Mms	65.3 g
Pe	450 W
Sensitivity	98.8 dB

Alignment hint

EBP	195 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 8.7 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
PHL Audio 4130	42 -1	0.208 =	92 +3	5.2 -0.1	98.5 -0.3	close	Xmax 5.2 mm < 5.3 mm: lower excursion-limited SPL	+
RCF LF 12G301	43 =	0.219 +0.01	97 +8	5.9 +0.6	98.6 -0.2	close		+
Precision Devices PD122	42.9 -0.1	0.194 -0.02	90 +1	5.5 +0.2	98 -0.8	close	16 Ω vs 8 Ω: amp load changes	+
PHL Audio 4040	45 +2	0.208 =	85 -4	4.9 -0.4	99.1 +0.3	close	Xmax 4.9 mm < 5.3 mm: lower excursion-limited SPL	+
PD PD 122	42.9 -0.1	0.196 -0.01	90 +1	4.7 -0.6	98.8 =	close	Xmax 4.7 mm < 5.3 mm: lower excursion-limited SPL	+
Precision Devices PD 122	42.9 -0.1	0.196 -0.01	90 +1	4.7 -0.6	98.8 =	close	Xmax 4.7 mm < 5.3 mm: lower excursion-limited SPL	+
RCF L 12P301	43 =	0.219 +0.01	97 +8	7.8 +2.5	98.6 -0.2	close		+
PHL Audio B303-8 4230	40 -3	0.22 +0.01	87.2 -1.8	5.8 +0.5	97.3 -1.5	close		+
18 Sound 12ND730	45 +2	0.23 +0.02	90 +1	6.5 +1.2	98 -0.8	close		+
RCF LF12G301	43 =	0.22 +0.01	97 +8	7 +1.7	97 -1.8	close		+

Compare the closest 3 against the COLOSSUS 12BM →

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.