B&C 12 HPL 51
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 51 Hz |
| Qts | 0.479 |
| Qes | 0.56 |
| Qms | 3.3 |
| Vas | 96 L |
| Sd | 522 cm² |
| Xmax | 4 mm |
| Re | 5.3 Ω |
| Bl | 10.8 T·m |
| Mms | 38.7 g |
| Pe | 150 W |
| Sensitivity | 97.3 dB |
Alignment hint
| EBP | 91 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 81.4 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 vp | 49.1 -1.9 | 0.461 -0.02 | 95.8 -0.2 | 4 = | 96.3 -1 | close | + | |
| Faital PRO 12PR300 | 50 -1 | 0.49 +0.01 | 89.7 -6.3 | 4.92 +0.92 | 97 -0.3 | close | 16 Ω vs 8 Ω: amp load changes | + |
| Davis 31TCA12 N1 | 51.1 +0.1 | 0.479 = | 84.1 -11.9 | 4.7 +0.7 | 96.1 -1.2 | close | + | |
| Audax 330 | 48.1 -2.9 | 0.468 -0.01 | 93.7 -2.3 | 4.5 +0.5 | 95.9 -1.4 | close | + | |
| Davis 31TCA12 vp | 49.1 -1.9 | 0.459 -0.02 | 107.8 +11.8 | 5.5 +1.5 | 96.9 -0.4 | close | + | |
| Davis 31TCA12 v2015 | 48.5 -2.5 | 0.442 -0.04 | 92.3 -3.7 | 5 +1 | 96.5 -0.8 | close | + | |
| Monacor SPA-112PA | 53 +2 | 0.497 +0.02 | 77 -19 | 4 = | 97.1 -0.2 | close | + | |
| Eminence BASSLITE S2012 | 48 -3 | 0.48 = | 91 -5 | 5.2 +1.2 | 94.6 -2.7 | close | + | |
| Davis 31TCA12 vn2 | 51.8 +0.8 | 0.484 +0.01 | 78.4 -17.6 | 4.6 +0.6 | 96 -1.3 | close | + | |
| Davis 31TCA12 vp2015 n1 | 51.8 +0.8 | 0.484 +0.01 | 78.4 -17.6 | 4.6 +0.6 | 96 -1.3 | close | + |
Compare the closest 3 against the 12 HPL 51 →
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.