Oberton 8M250
Thiele-Small parameters
| Nominal size | 8" |
|---|---|
| Impedance | 8 Ω |
| Fs | 74.37 Hz |
| Qts | 0.201 |
| Qes | 0.204 |
| Qms | 14.01 |
| Vas | 15.63 L |
| Sd | 202 cm² |
| Xmax | 2.75 mm |
| Re | 5 Ω |
| Bl | 13.7 T·m |
| Mms | 16.38 g |
| Pe | 250 W |
| Sensitivity | 99.5 dB |
Alignment hint
| EBP | 365 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 1.4 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 |
|---|---|---|---|---|---|---|---|---|
| B&C 8MDN51 | 70 -4.37 | 0.2 = | 16 +0.37 | 6 +3.25 | 97 -2.5 | close | + | |
| Beyma 8MC500Nd | 69 -5.37 | 0.18 -0.02 | 15.9 +0.27 | 5 +2.25 | 98 -1.5 | close | + | |
| 18 Sound 8NTLW2000 | 71 -3.37 | 0.21 +0.01 | 13 -2.63 | 4.4 +1.65 | 97.5 -2 | close | + | |
| LaVoce MAF082.00 | 85 +10.63 | 0.2 = | 11.3 -4.33 | 2.6 -0.15 | 98.5 -1 | usable | Xmax 2.6 mm < 2.75 mm: lower excursion-limited SPL | + |
| B&C 8PE21 | 87 +12.63 | 0.19 -0.01 | 13 -2.63 | 2.5 -0.25 | 98 -1.5 | usable | Xmax 2.5 mm < 2.75 mm: lower excursion-limited SPL | + |
| B&C 8FW51 | 74 -0.37 | 0.21 +0.01 | 12 -3.63 | 6 +3.25 | 97 -2.5 | usable | + | |
| Oberton 8M150 | 68.2 -6.17 | 0.217 +0.02 | 21.62 +5.99 | 3.25 +0.5 | 98 -1.5 | usable | 150 W vs 250 W: lower power handling | + |
| B&C 8NW51 | 68 -6.37 | 0.22 +0.02 | 14 -1.63 | 7 +4.25 | 97 -2.5 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| Sica 8 Fe 2.5 CP | 73 -1.37 | 0.28 +0.08 | 15.6 -0.03 | 4 +1.25 | 96.7 -2.8 | usable | + | |
| LaVoce WAF082.01 | 76 +1.63 | 0.21 +0.01 | 10.21 -5.42 | 5.8 +3.05 | 97 -2.5 | usable | + |
Compare the closest 3 against the 8M250 →
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.