P.Audio BM-12CX38
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 48 Hz |
| Qts | 0.221 |
| Qes | 0.23 |
| Qms | 5.99 |
| Vas | 72.9 L |
| Sd | 510 cm² |
| Xmax | 4.5 mm |
| Re | 5.2 Ω |
| Bl | 19.4 T·m |
| Mms | 55 g |
| Pe | 500 W |
| Sensitivity | 99.3 dB |
Alignment hint
| EBP | 209 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 7.9 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 |
|---|---|---|---|---|---|---|---|---|
| RCF L 12N301 | 48 = | 0.213 -0.01 | 70 -2.9 | 5 +0.5 | 99.1 -0.2 | close | + | |
| B&C 12 PLB 76 | 50 +2 | 0.229 +0.01 | 75 +2.1 | 4.4 -0.1 | 99.7 +0.4 | close | 350 W vs 500 W: lower power handling · Xmax 4.4 mm < 4.5 mm: lower excursion-limited SPL | + |
| B&C 12PLB76 | 50 +2 | 0.23 +0.01 | 75 +2.1 | 5 +0.5 | 99 -0.3 | close | 350 W vs 500 W: lower power handling | + |
| P.Audio C12-500MB | 47 -1 | 0.238 +0.02 | 73 +0.1 | 4.5 = | 98 -1.3 | close | + | |
| PHL Audio 4070 | 47 -1 | 0.207 -0.01 | 68 -4.9 | 4.6 +0.1 | 98.7 -0.6 | close | + | |
| Oberton 12B450 | 46.29 -1.71 | 0.235 +0.01 | 71.75 -1.15 | 7.75 +3.25 | 99 -0.3 | close | + | |
| B&C 12 NDL 76 | 50 +2 | 0.2 -0.02 | 73 +0.1 | 4.3 -0.2 | 100.1 +0.8 | close | Xmax 4.3 mm < 4.5 mm: lower excursion-limited SPL | + |
| Oberton 12NB450 | 46.46 -1.54 | 0.204 -0.02 | 72.57 -0.33 | 7.75 +3.25 | 100 +0.7 | close | + | |
| 18 Sound 12ND930 | 50 +2 | 0.21 -0.01 | 70 -2.9 | 6.5 +2 | 98 -1.3 | close | + | |
| B&C 12NDL76 | 50 +2 | 0.2 -0.02 | 73 +0.1 | 7 +2.5 | 100 +0.7 | close | + |
Compare the closest 3 against the BM-12CX38 →
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.