Monacor SP-12A/300PA

12" · 8 Ω · 300 W · 96 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	50 Hz
Qts	0.416
Qes	0.45
Qms	5.46
Vas	73 L
Sd	531 cm²
Xmax	3.8 mm
Re	6.5 Ω
Bl	15.8 T·m
Mms	54.9 g
Pe	300 W
Sensitivity	96 dB

Alignment hint

EBP	111 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 38.6 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
Faital PRO 12PR300	50 =	0.41 -0.01	73.9 +0.9	4.92 +1.12	97 +1	close	4 Ω vs 8 Ω: amp load changes	+
PHL Audio 4511	48 -2	0.406 -0.01	74.1 +1.1	5.4 +1.6	96.2 +0.2	close		+
Faital PRO 12PR310	50 =	0.42 =	77.3 +4.3	4.92 +1.12	98 +2	close	4 Ω vs 8 Ω: amp load changes	+
PHL Audio 4531 v2023	46 -4	0.399 -0.02	71.9 -1.1	5.6 +1.8	95.9 -0.1	close		+
Elder Audio 12LB075-U	50 =	0.472 +0.06	72.8 -0.2	5.5 +1.7	96 =	close		+
SICA 12 E 2.5 CS	50 =	0.41 -0.01	72.5 -0.5	2.8 -1	96.4 +0.4	close	Xmax 2.8 mm < 3.8 mm: lower excursion-limited SPL	+
the box Speaker 12-280/8-A	50.6 +0.6	0.472 +0.06	72.8 -0.2	5.5 +1.7	96.1 +0.1	close		+
Audax PR330T0	55 +5	0.435 +0.02	73.7 +0.7	3.7 -0.1	97.3 +1.3	close	150 W vs 300 W: lower power handling · Xmax 3.7 mm < 3.8 mm: lower excursion-limited SPL	+
Fane SOVEREIGN 12-300 v2024	47 -3	0.4 -0.02	80 +7	5 +1.2	96.3 +0.3	close		+
SICA 12 BP 2.5 CS	46.8 -3.2	0.425 +0.01	81.3 +8.3	5 +1.2	96.4 +0.4	close	200 W vs 300 W: lower power handling	+

Compare the closest 3 against the SP-12A/300PA →

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.