DD Audio 712D4

12" · 4 Ω · 1200 W · 91.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	37.7 Hz
Qts	0.478
Qes	0.52
Qms	5.99
Vas	20.2 L
Sd	507 cm²
Xmax	7 mm
Re	2 Ω
Bl	17 T·m
Mms	318.5 g
Pe	1200 W
Sensitivity	91.2 dB

Alignment hint

EBP	73 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 17 L

EBP 50-100: works in either a sealed or ported 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 RAPTOR 12 v2014	43 +5.3	0.545 +0.07	22.5 +2.3	7.7 +0.7	90.7 -0.5	close		+
Monacor RAPTOR 12 v2014 2	43 +5.3	0.548 +0.07	17.8 -2.4	6.8 -0.2	91.6 +0.4	usable	Xmax 6.8 mm < 7 mm: lower excursion-limited SPL	+
MTX Audio TX812	35 -2.7	0.422 -0.06	24.6 +4.4	10 +3	91.6 +0.4	usable		+
DC Audio LV4 D2	35.9 -1.8	0.5 +0.02	30.6 +10.4	11 +4	92.2 +1	usable		+
Rockford Fosgate T2D212	38.7 +1	0.489 +0.01	13.6 -6.6	7.1 +0.1	87.3 -3.9	usable		+
Faital PRO 12RS1066	45 +7.3	0.44 -0.04	28.4 +8.2	12.45 +5.45	92 +0.8	usable	16 Ω vs 4 Ω: amp load changes	+
Soundstream T4-12	36.5 -1.2	0.371 -0.11	29.3 +9.1	6.6 -0.4	91.3 +0.1	usable	900 W vs 1200 W: lower power handling · Xmax 6.6 mm < 7 mm: lower excursion-limited SPL	+
Massive Audio REBEL 124	32.6 -5.1	0.485 +0.01	38 +17.8	7.1 +0.1	92.4 +1.2	usable	2 Ω vs 4 Ω: amp load changes · 500 W vs 1200 W: lower power handling	+
Monacor RAPTOR 12 MK2	34 -3.7	0.523 +0.05	32 +11.8	10.1 +3.1	89.2 -2	usable		+
FI Audio Q12 DUAL 2	33.9 -3.8	0.371 -0.11	28.3 +8.1	10.6 +3.6	91.1 -0.1	usable		+

Compare the closest 3 against the 712D4 →

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.