Ardan W PRO-31

12" · 8 Ω · 200 W · 94.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	36.8 Hz
Qts	0.373
Qes	0.427
Qms	2.935
Vas	133.9 L
Sd	498.8 cm²
Xmax	6 mm
Re	6.9 Ω
Bl	13.5 T·m
Mms	48.7 g
Pe	200 W
Sensitivity	94.6 dB

Alignment hint

EBP	86 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 51.6 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
MCM Electronics 55-2982	36.2 -0.6	0.407 +0.03	121.7 -12.2	7 +1	93.9 -0.7	close		+
Beyma 12BR70	35 -1.8	0.355 -0.02	135 +1.1	4.8 -1.2	94.7 +0.1	close	125 W vs 200 W: lower power handling · Xmax 4.8 mm < 6 mm: lower excursion-limited SPL	+
Eminence DELTALITE II 2512 v2	37 +0.2	0.386 +0.01	147 +13.1	4.9 -1.1	96.3 +1.7	close	Xmax 4.9 mm < 6 mm: lower excursion-limited SPL	+
Beyma SM212 v2009	40 +3.2	0.373 =	150 +16.1	8.2 +2.2	97.2 +2.6	close		+
Infinity KAPPA CS 120 BR	35.2 -1.6	0.397 +0.02	123.2 -10.7	8 +2	97.1 +2.5	close	4 Ω vs 8 Ω: amp load changes	+
GRS 12PT-8	35 -1.8	0.387 +0.01	112 -21.9	7.8 +1.8	93 -1.6	close		+
PHL Audio 4530	37 +0.2	0.314 -0.06	124 -9.9	6 =	96.3 +1.7	close		+
Kartesian WOM300_vDIY	37 +0.2	0.362 -0.01	91.7 -42.2	6.4 +0.4	94.6 =	close		+
Focal 13V 7511	31.2 -5.6	0.353 -0.02	154.2 +20.3	6.8 +0.8	93.6 -1	close		+
Faital PRO 12PR320-08 v2022	42 +5.2	0.371 =	113 -20.9	7.1 +1.1	97.1 +2.5	close		+

Compare the closest 3 against the W PRO-31 →

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.