Beyma 12BR70 v2014
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 31 Hz |
| Qts | 0.497 |
| Qes | 0.56 |
| Qms | 4.44 |
| Vas | 142 L |
| Sd | 540 cm² |
| Xmax | 6 mm |
| Re | 5.6 Ω |
| Bl | 12.2 T·m |
| Mms | 75.9 g |
| Pe | 125 W |
| Sensitivity | 92.3 dB |
Alignment hint
| EBP | 55 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 138.6 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma 12BR70 v2015 | 31 = | 0.497 = | 142 = | 6 = | 92.3 = | close | + | |
| Beyma 12"BR70 | 31 = | 0.5 = | 142 = | 8 +2 | 93 +0.7 | close | + | |
| Peerless SLS12 830669 v2012 | 31 = | 0.536 +0.04 | 132.4 -9.6 | 6.1 +0.1 | 91.9 -0.4 | close | + | |
| Monacor SPH-300KE vp2 | 27.6 -3.4 | 0.489 -0.01 | 139.3 -2.7 | 6.5 +0.5 | 90.4 -1.9 | close | + | |
| Infinity KAPPA CS 120 LB | 29 -2 | 0.485 -0.01 | 161.4 +19.4 | 6.7 +0.7 | 94.3 +2 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Artech SPC-303 | 28.9 -2.1 | 0.494 = | 129 -13 | 6 = | 88.9 -3.4 | close | + | |
| JBL P1200 | 30 -1 | 0.45 -0.05 | 123 -19 | 7.8 +1.8 | 92.8 +0.5 | close | + | |
| Faital PRO 12FE330 | 33 +2 | 0.45 -0.05 | 146.7 +4.7 | 8.32 +2.32 | 94 +1.7 | close | + | |
| Celestion PULSE XL 12.20 | 35.1 +4.1 | 0.503 +0.01 | 153.3 +11.3 | 8.3 +2.3 | 94.2 +1.9 | close | + | |
| Peerless SLS12 830669 | 28 -3 | 0.474 -0.02 | 172.4 +30.4 | 6.8 +0.8 | 92.2 -0.1 | close | + |
Compare the closest 3 against the 12BR70 v2014 →
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.