Davis 31TK12
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 38.1 Hz |
| Qts | 0.314 |
| Qes | 0.35 |
| Qms | 3.07 |
| Vas | 216 L |
| Sd | 543 cm² |
| Xmax | 5 mm |
| Re | 6.9 Ω |
| Bl | 12.6 T·m |
| Mms | 33.4 g |
| Pe | 150 W |
| Sensitivity | 98 dB |
Alignment hint
| EBP | 109 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 53.1 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 |
|---|---|---|---|---|---|---|---|---|
| Davis 31TCA12 v2012 | 38 -0.1 | 0.333 +0.02 | 216 = | 6 +1 | 97.9 -0.1 | close | + | |
| Davis 31TCA12 vp rc | 32.5 -5.6 | 0.314 = | 222 +6 | 6 +1 | 96.2 -1.8 | close | + | |
| Davis 31TCA12 v2009 | 32.5 -5.6 | 0.31 = | 222 +6 | 6 +1 | 95.9 -2.1 | close | + | |
| Tannoy DC 3134 CPA12 | 37.7 -0.4 | 0.369 +0.05 | 226.7 +10.7 | 5 = | 96.1 -1.9 | close | 16 Ω vs 8 Ω: amp load changes · 75 W vs 150 W: lower power handling | + |
| Cabasse 30M22 | 31.5 -6.6 | 0.315 = | 196.1 -19.9 | 8 +3 | 97.7 -0.3 | close | + | |
| Focal AUDIOM 12AX | 30.7 -7.4 | 0.329 +0.02 | 226 +10 | 4.5 -0.5 | 95.9 -2.1 | usable | Xmax 4.5 mm < 5 mm: lower excursion-limited SPL | + |
| Visaton TD | 31 -7.1 | 0.324 +0.01 | 200 -16 | 7.3 +2.3 | 95.5 -2.5 | usable | + | |
| Audio Dynamique AD31TPA12G | 37.2 -0.9 | 0.448 +0.13 | 213.6 -2.4 | 5 = | 97.5 -0.5 | usable | + | |
| Beyma SM212 | 34 -4.1 | 0.258 -0.06 | 198 -18 | 8.2 +3.2 | 98 = | usable | + | |
| Visaton TD1 | 30.3 -7.8 | 0.327 +0.01 | 200 -16 | 7.6 +2.6 | 95.3 -2.7 | usable | + |
Compare the closest 3 against the 31TK12 →
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.