Davis 31TCA12

12" · 8 Ω · 200 W · 95.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	34 Hz
Qts	0.296
Qes	0.33
Qms	2.92
Vas	149 L
Sd	543 cm²
Xmax	6 mm
Re	5.8 Ω
Bl	15.1 T·m
Mms	60.8 g
Pe	200 W
Sensitivity	95.9 dB

Alignment hint

EBP	103 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 31.7 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
AE Speakers TD12X	33.9 -0.1	0.284 -0.01	159.4 +10.4	7 +1	95.4 -0.5	close		+
PHL Audio 4530	37 +3	0.314 +0.02	124 -25	6 =	96.3 +0.4	close		+
Magnat 300	31 -3	0.3 =	120 -29	7.1 +1.1	96.5 +0.6	close	4 Ω vs 8 Ω: amp load changes	+
AE Speakers TD12S	31.5 -2.5	0.336 +0.04	159.4 +10.4	7 +1	94.9 -1	close		+
Beyma SM112/N	38 +4	0.27 -0.03	138 -11	7.3 +1.3	97.2 +1.3	close		+
RCF L 12P400K	34 =	0.241 -0.05	130 -19	6 =	96.3 +0.4	close		+
RCF L12P400K	33.7 -0.3	0.25 -0.05	130 -19	6 =	94.7 -1.2	close		+
Magnat SUPREME 3000	29 -5	0.31 +0.01	131 -18	8 +2	96.4 +0.5	close	4 Ω vs 8 Ω: amp load changes	+
Audax HT300Z2	31.5 -2.5	0.337 +0.04	162.5 +13.5	5.9 -0.1	97.5 +1.6	close	4 Ω vs 8 Ω: amp load changes · 120 W vs 200 W: lower power handling · Xmax 5.9 mm < 6 mm: lower excursion-limited SPL	+
Beyma SM112-N2	40 +6	0.298 =	117.3 -31.7	5.9 -0.1	96.9 +1	usable	Xmax 5.9 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 31TCA12 →

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.