Beyma SM112
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 45 Hz |
| Qts | 0.262 |
| Qes | 0.27 |
| Qms | 8.83 |
| Vas | 101 L |
| Sd | 550 cm² |
| Xmax | 4.8 mm |
| Re | 6.3 Ω |
| Bl | 18.6 T·m |
| Mms | 52.5 g |
| Pe | 250 W |
| Sensitivity | 98.3 dB |
Alignment hint
| EBP | 167 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 16.1 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma 12CXA400Nd | 45 = | 0.268 +0.01 | 102.2 +1.2 | 6 +1.2 | 98 -0.3 | close | + | |
| SB Audience 12MW300 | 43 -2 | 0.264 = | 104 +3 | 5.6 +0.8 | 98.7 +0.4 | close | + | |
| Beyma 12CXA400Nd v2018 | 45 = | 0.251 -0.01 | 88.5 -12.5 | 5.5 +0.7 | 97.7 -0.6 | close | + | |
| 18 Sound 12MB700 | 46 +1 | 0.25 -0.01 | 100 -1 | 4.5 -0.3 | 100.5 +2.2 | close | 16 Ω vs 8 Ω: amp load changes · Xmax 4.5 mm < 4.8 mm: lower excursion-limited SPL | + |
| PD PD 912 | 41.3 -3.7 | 0.253 -0.01 | 97.9 -3.1 | 5 +0.2 | 96.7 -1.6 | close | + | |
| Precision Devices PD 912 | 41.3 -3.7 | 0.253 -0.01 | 97.9 -3.1 | 5 +0.2 | 96.7 -1.6 | close | + | |
| Precision Devices PD912 | 41.29 -3.71 | 0.25 -0.01 | 97.87 -3.13 | 5 +0.2 | 97 -1.3 | close | + | |
| PHL Audio 4500 | 42 -3 | 0.274 +0.01 | 108 +7 | 5.7 +0.9 | 99 +0.7 | close | + | |
| Beyma 12K200 v2 | 43 -2 | 0.276 +0.01 | 96.2 -4.8 | 4.5 -0.3 | 96.6 -1.7 | close | Xmax 4.5 mm < 4.8 mm: lower excursion-limited SPL | + |
| PHL Audio 4550 | 45 = | 0.289 +0.03 | 106 +5 | 4 -0.8 | 98.3 = | close | Xmax 4 mm < 4.8 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the SM112 →
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.