LaVoce FBASS12-20

12" · 8 Ω · 200 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	53 Hz
Qts	0.46
Qes	0.51
Qms	4.71
Vas	75.41 L
Sd	543.25 cm²
Xmax	4.3 mm
Re	5.3 Ω
Bl	13.26 T·m
Mms	50.73 g
Pe	200 W
Sensitivity	97 dB

Alignment hint

EBP	104 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 55.3 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
Monacor SPA-112PA	53 =	0.497 +0.04	77 +1.59	4 -0.3	97.1 +0.1	close	Xmax 4 mm < 4.3 mm: lower excursion-limited SPL	+
Davis 31TCA12 vn2	51.8 -1.2	0.484 +0.02	78.4 +2.99	4.6 +0.3	96 -1	close		+
Davis 31TCA12 vp2015 n1	51.8 -1.2	0.484 +0.02	78.4 +2.99	4.6 +0.3	96 -1	close		+
Faital PRO 12PR330	52 -1	0.49 +0.03	76.3 +0.89	7.27 +2.97	97 =	close	16 Ω vs 8 Ω: amp load changes	+
the box Speaker 12-280/8-A	50.6 -2.4	0.472 +0.01	72.8 -2.61	5.5 +1.2	96.1 -0.9	close		+
Elder Audio 12LB075-U	50 -3	0.472 +0.01	72.8 -2.61	5.5 +1.2	96 -1	close		+
Radian CRS1230	48 -5	0.464 =	76 +0.59	5.5 +1.2	95.8 -1.2	close		+
Monacor SP-12/100PA v4	52.5 -0.5	0.462 =	77.3 +1.89	3.3 -1	96.4 -0.6	close	100 W vs 200 W: lower power handling · Xmax 3.3 mm < 4.3 mm: lower excursion-limited SPL	+
RCF L 12/565	55 +2	0.497 +0.04	75 -0.41	3.8 -0.5	97.3 +0.3	close	100 W vs 200 W: lower power handling · Xmax 3.8 mm < 4.3 mm: lower excursion-limited SPL	+
Audax PR330T0	55 +2	0.435 -0.03	73.7 -1.71	3.7 -0.6	97.3 +0.3	close	150 W vs 200 W: lower power handling · Xmax 3.7 mm < 4.3 mm: lower excursion-limited SPL	+

Compare the closest 3 against the FBASS12-20 →

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.