Beyma SM212
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 34 Hz |
| Qts | 0.258 |
| Qes | 0.27 |
| Qms | 5.6 |
| Vas | 198 L |
| Sd | 550 cm² |
| Xmax | 8.2 mm |
| Re | 5.8 Ω |
| Bl | 14.7 T·m |
| Mms | 46.9 g |
| Pe | 350 W |
| Sensitivity | 98 dB |
Alignment hint
| EBP | 126 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 30.4 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 |
|---|---|---|---|---|---|---|---|---|
| Fostex L 345 | 34 = | 0.242 -0.02 | 197 -1 | 5.7 -2.5 | 97.3 -0.7 | close | 150 W vs 350 W: lower power handling · Xmax 5.7 mm < 8.2 mm: lower excursion-limited SPL | + |
| Cabasse 30M22 | 31.5 -2.5 | 0.315 +0.06 | 196.1 -1.9 | 8 -0.2 | 97.7 -0.3 | close | 200 W vs 350 W: lower power handling · Xmax 8 mm < 8.2 mm: lower excursion-limited SPL | + |
| AE Speakers TD12X | 33.9 -0.1 | 0.284 +0.03 | 159.4 -38.6 | 7 -1.2 | 95.4 -2.6 | usable | Xmax 7 mm < 8.2 mm: lower excursion-limited SPL | + |
| Visaton WS33NG | 30 -4 | 0.308 +0.05 | 190 -8 | 8 -0.2 | 94.5 -3.5 | usable | 200 W vs 350 W: lower power handling · Xmax 8 mm < 8.2 mm: lower excursion-limited SPL | + |
| Monacor SP-330PAX | 33 -1 | 0.238 -0.02 | 190 -8 | 4.5 -3.7 | 97.4 -0.6 | usable | 125 W vs 350 W: lower power handling · Xmax 4.5 mm < 8.2 mm: lower excursion-limited SPL | + |
| Visaton TD | 31 -3 | 0.324 +0.07 | 200 +2 | 7.3 -0.9 | 95.5 -2.5 | usable | 150 W vs 350 W: lower power handling · Xmax 7.3 mm < 8.2 mm: lower excursion-limited SPL | + |
| Beyma SM112/N | 38 +4 | 0.27 +0.01 | 138 -60 | 7.3 -0.9 | 97.2 -0.8 | usable | Xmax 7.3 mm < 8.2 mm: lower excursion-limited SPL | + |
| Visaton TD1 | 30.3 -3.7 | 0.327 +0.07 | 200 +2 | 7.6 -0.6 | 95.3 -2.7 | usable | 150 W vs 350 W: lower power handling · Xmax 7.6 mm < 8.2 mm: lower excursion-limited SPL | + |
| Westra SW-300-2808 | 30 -4 | 0.322 +0.06 | 209 +11 | 9.3 +1.1 | 94.7 -3.3 | usable | 250 W vs 350 W: lower power handling | + |
| Rockford Fosgate S1-124 | 28 -6 | 0.326 +0.07 | 186 -12 | 9.9 +1.7 | 96.2 -1.8 | usable | 4 Ω vs 8 Ω: amp load changes | + |
Compare the closest 3 against the SM212 →
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.