Monacor SONIC 12 MK2 vp

12" · 4 Ω · 350 W · 87 dB

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	24 Hz
Qts	0.487
Qes	0.52
Qms	7.75
Vas	57 L
Sd	511 cm²
Xmax	6.3 mm
Re	3.8 Ω
Bl	17.6 T·m
Mms	282.4 g
Pe	350 W
Sensitivity	87 dB

Alignment hint

EBP	46 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 51.4 L

EBP < 50: favours a sealed (closed) 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
Rockford Fosgate T0D212	25.3 +1.3	0.473 -0.01	55 -2	10.5 +4.2	88 +1	close		+
Rockford Fosgate P3D2-12	26.5 +2.5	0.491 =	57.7 +0.7	9.5 +3.2	89 +2	close		+
Monacor BLACKBASS-12 8 Ohms	29 +5	0.482 -0.01	61 +4	7.5 +1.2	87.1 +0.1	close	8 Ω vs 4 Ω: amp load changes	+
Monacor SONIC 12 vp	27 +3	0.469 -0.02	51 -6	6.3 =	88.1 +1.1	close	8 Ω vs 4 Ω: amp load changes	+
Rockford Fosgate P3D4-12	27.7 +3.7	0.517 +0.03	57.7 +0.7	9.4 +3.1	86.3 -0.7	close	8 Ω vs 4 Ω: amp load changes	+
Infinity 120.3SE	28.4 +4.4	0.475 -0.01	55.6 -1.4	6.8 +0.5	89.5 +2.5	close		+
JBL GTO 1214	28 +4	0.469 -0.02	58.2 +1.2	7.3 +1	89.4 +2.4	close		+
OmnesAudio SW12HEX	26.4 +2.4	0.453 -0.03	68.7 +11.7	7 +0.7	86.9 -0.1	close	8 Ω vs 4 Ω: amp load changes · 250 W vs 350 W: lower power handling	+
Infinity KAPPA 120.9W	27.2 +3.2	0.43 -0.06	54.4 -2.6	6.7 +0.4	87.9 +0.9	close	8 Ω vs 4 Ω: amp load changes	+
Rockford Fosgate T0D412	26 +2	0.529 +0.04	55.1 -1.9	10.7 +4.4	85.3 -1.7	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the SONIC 12 MK2 vp →

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.