Radian 5312 vp

12" · 8 Ω · 250 W · 100.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	57.9 Hz
Qts	0.36
Qes	0.375
Qms	8.829
Vas	101.3 L
Sd	500 cm²
Xmax	5.5 mm
Re	5.97 Ω
Bl	12.3 T·m
Mms	26.2 g
Pe	250 W
Sensitivity	100.4 dB

Alignment hint

EBP	154 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 35.4 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 -7.9	0.36 =	92.6 -8.7	4.92 -0.58	99 -1.4	close	Xmax 4.92 mm < 5.5 mm: lower excursion-limited SPL	+
Supravox 285 GMF vp Melaudia	59.3 +1.4	0.375 +0.02	97.4 -3.9	3.3 -2.2	100.1 -0.3	usable	70 W vs 250 W: lower power handling · Xmax 3.3 mm < 5.5 mm: lower excursion-limited SPL	+
Eminence DELTA PRO 12 A	51 -6.9	0.353 -0.01	81.7 -19.6	6.2 +0.7	98.1 -2.3	usable		+
Eminence DELTA PRO 12 A vp	51 -6.9	0.353 -0.01	81.7 -19.6	6.2 +0.7	98.1 -2.3	usable		+
Eminence KappaLITE 3012HO	52 -5.9	0.32 -0.04	81.1 -20.2	6.2 +0.7	100.5 +0.1	usable		+
Fane SOVEREIGN 12-300	50 -7.9	0.389 +0.03	103.6 +2.3	4.5 -1	98.4 -2	usable	Xmax 4.5 mm < 5.5 mm: lower excursion-limited SPL	+
18 Sound 12W500	49 -8.9	0.35 -0.01	101 -0.3	4 -1.5	98.5 -1.9	usable	4 Ω vs 8 Ω: amp load changes · Xmax 4 mm < 5.5 mm: lower excursion-limited SPL	+
Eminence DELTA PRO 12A	51 -6.9	0.35 -0.01	81.7 -19.6	4.6 -0.9	99.2 -1.2	usable	Xmax 4.6 mm < 5.5 mm: lower excursion-limited SPL	+
Eminence KAPPALITE 3012 H0	51.5 -6.4	0.318 -0.04	81.1 -20.2	5.8 +0.3	98.9 -1.5	usable		+
RCF MB 12N251	50 -7.9	0.338 -0.02	83 -18.3	5 -0.5	98.5 -1.9	usable	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 5312 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.