Volt BM251.4 PA
Thiele-Small parameters
| Nominal size | 10" |
|---|---|
| Impedance | 8 Ω |
| Fs | 59 Hz |
| Qts | 0.274 |
| Qes | 0.29 |
| Qms | 4.88 |
| Vas | 49 L |
| Sd | 337 cm² |
| Xmax | 2.5 mm |
| Re | 5.15 Ω |
| Bl | 12.5 T·m |
| Mms | 23.6 g |
| Pe | 200 W |
| Sensitivity | 99.3 dB |
Alignment hint
| EBP | 203 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 8.7 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 |
|---|---|---|---|---|---|---|---|---|
| STX W.25.400.8.MCX | 54 -5 | 0.282 +0.01 | 50 +1 | 3.5 +1 | 98 -1.3 | close | + | |
| SICA 10 L 2.5 SL 4 Ohms | 56.5 -2.5 | 0.295 +0.02 | 46.9 -2.1 | 4 +1.5 | 99.8 +0.5 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Faital PRO 10PR300 | 60 +1 | 0.28 +0.01 | 42.2 -6.8 | 4.92 +2.42 | 98 -1.3 | close | + | |
| P.Audio E10-200S v2011 | 55.4 -3.6 | 0.272 = | 44.6 -4.4 | 4 +1.5 | 96.9 -2.4 | close | + | |
| PHL Audio 3430 | 57 -2 | 0.271 = | 41 -8 | 4.2 +1.7 | 97.7 -1.6 | close | + | |
| Jensen JB 10/150 | 60 +1 | 0.295 +0.02 | 42 -7 | 3.7 +1.2 | 97.8 -1.5 | close | 150 W vs 200 W: lower power handling | + |
| Ciare PW252 | 55 -4 | 0.264 -0.01 | 43.4 -5.6 | 2.3 -0.2 | 97 -2.3 | close | 150 W vs 200 W: lower power handling · Xmax 2.3 mm < 2.5 mm: lower excursion-limited SPL | + |
| Celestion CF1025C | 54.8 -4.2 | 0.265 -0.01 | 38.6 -10.4 | 2.5 = | 97.2 -2.1 | close | + | |
| 18 Sound 10NMB420 | 56 -3 | 0.25 -0.02 | 40 -9 | 4 +1.5 | 99 -0.3 | close | + | |
| PHL Audio 3000 | 60 +1 | 0.272 = | 35 -14 | 3.4 +0.9 | 97.8 -1.5 | close | + |
Compare the closest 3 against the BM251.4 PA →
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.