Radian 5212-8

12" · 8 Ω · 375 W · 94.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	45.1 Hz
Qts	0.489
Qes	0.57
Qms	3.46
Vas	87.9 L
Sd	515 cm²
Xmax	5 mm
Re	6.1 Ω
Bl	12.6 T·m
Mms	52.7 g
Pe	375 W
Sensitivity	94.7 dB

Alignment hint

EBP	79 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 80.6 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
Eminence BASSLITE S2012	48 +2.9	0.48 -0.01	91 +3.1	5.2 +0.2	94.6 -0.1	close	150 W vs 375 W: lower power handling	+
Davis 31TCA12 vp 2018 CLIO POCKET	45.8 +0.7	0.455 -0.03	86.8 -1.1	5 =	95 +0.3	close	200 W vs 375 W: lower power handling	+
PHL Audio 4540 vp essais	45.8 +0.7	0.456 -0.03	87.8 -0.1	6 +1	94.8 +0.1	close		+
Beyma SM212 vp Nº1	45.8 +0.7	0.456 -0.03	87.1 -0.8	6.5 +1.5	94.8 +0.1	close		+
PHL Audio 4530 vp2	45.8 +0.7	0.454 -0.03	86.8 -1.1	6 +1	95 +0.3	close		+
Davis 31TCA12 vp2015 n2	48.5 +3.4	0.471 -0.02	85.1 -2.8	4.9 -0.1	95.6 +0.9	close	200 W vs 375 W: lower power handling · Xmax 4.9 mm < 5 mm: lower excursion-limited SPL	+
Audax 330 vp	45.8 +0.7	0.454 -0.03	86.8 -1.1	4.3 -0.7	95 +0.3	close	150 W vs 375 W: lower power handling · Xmax 4.3 mm < 5 mm: lower excursion-limited SPL	+
PHL Audio 4530 vp clio p	47.1 +2	0.46 -0.03	93.2 +5.3	6 +1	95.7 +1	close		+
Faital PRO 12PR300	50 +4.9	0.49 =	89.7 +1.8	4.92 -0.08	97 +2.3	close	16 Ω vs 8 Ω: amp load changes · Xmax 4.92 mm < 5 mm: lower excursion-limited SPL	+
Faital PRO 12FE300	47 +1.9	0.51 +0.02	83.7 -4.2	5.07 +0.07	97 +2.3	close	250 W vs 375 W: lower power handling	+

Compare the closest 3 against the 5212-8 →

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.