Monacor SPA-112PA

12" · 8 Ω · 200 W · 97.1 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	53 Hz
Qts	0.497
Qes	0.52
Qms	11.39
Vas	77 L
Sd	530 cm²
Xmax	4 mm
Re	5.4 Ω
Bl	12.6 T·m
Mms	46.1 g
Pe	200 W
Sensitivity	97.1 dB

Alignment hint

EBP	102 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 75.2 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
RCF L 12/565	55 +2	0.497 =	75 -2	3.8 -0.2	97.3 +0.2	close	100 W vs 200 W: lower power handling · Xmax 3.8 mm < 4 mm: lower excursion-limited SPL	+
LaVoce FBASS12-20	53 =	0.46 -0.04	75.41 -1.59	4.3 +0.3	97 -0.1	close		+
Faital PRO 12PR330	52 -1	0.49 -0.01	76.3 -0.7	7.27 +3.27	97 -0.1	close	16 Ω vs 8 Ω: amp load changes	+
Davis 31TCA12 vn2	51.8 -1.2	0.484 -0.01	78.4 +1.4	4.6 +0.6	96 -1.1	close		+
Davis 31TCA12 vp2015 n1	51.8 -1.2	0.484 -0.01	78.4 +1.4	4.6 +0.6	96 -1.1	close		+
Davis 31TCA12 N1	51.1 -1.9	0.479 -0.02	84.1 +7.1	4.7 +0.7	96.1 -1	close		+
Monacor SP-12/100PA v2	52.5 -0.5	0.481 -0.02	81.6 +4.6	3.4 -0.6	96.4 -0.7	close	100 W vs 200 W: lower power handling · Xmax 3.4 mm < 4 mm: lower excursion-limited SPL	+
Faital PRO 12PR300	50 -3	0.49 -0.01	89.7 +12.7	4.92 +0.92	97 -0.1	close	16 Ω vs 8 Ω: amp load changes	+
Monacor SP-12/100PA v1	53.3 +0.3	0.472 -0.03	74.8 -2.2	3.3 -0.7	96.4 -0.7	close	100 W vs 200 W: lower power handling · Xmax 3.3 mm < 4 mm: lower excursion-limited SPL	+
the box Speaker 12-280/8-A	50.6 -2.4	0.472 -0.03	72.8 -4.2	5.5 +1.5	96.1 -1	close		+

Compare the closest 3 against the SPA-112PA →

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.