Beyma 12MC700Nd
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 51 Hz |
| Qts | 0.24 |
| Qes | 0.26 |
| Qms | 4.1 |
| Vas | 58 L |
| Sd | 550 cm² |
| Xmax | 7 mm |
| Re | 5.2 Ω |
| Mms | 72 g |
| Pe | 700 W |
| Sensitivity | 99 dB |
Alignment hint
| EBP | 196 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 7.6 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 12NDL88 | 48 -3 | 0.24 = | 57 -1 | 8 +1 | 97 -2 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Beyma 12MCB700 | 51 = | 0.27 +0.03 | 59.5 +1.5 | 7 = | 98 -1 | close | + | |
| B&C 12NDL88-4 | 48 -3 | 0.24 = | 57 -1 | 8 +1 | 95.9 -3.1 | close | 4 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 12ND830 | 58 +7 | 0.24 = | 63 +5 | 6.5 -0.5 | 99 = | close | 4 Ω vs 8 Ω: amp load changes · 450 W vs 700 W: lower power handling · Xmax 6.5 mm < 7 mm: lower excursion-limited SPL | + |
| Beyma 12"P80/Fe V2 | 48 -3 | 0.21 -0.03 | 61 +3 | 7.5 +0.5 | 99 = | close | + | |
| RCF LF12P903 | 47 -4 | 0.23 -0.01 | 65 +7 | 7 = | 97.8 -1.2 | close | 500 W vs 700 W: lower power handling | + |
| B&C 12CLA76 | 52 +1 | 0.25 +0.01 | 56 -2 | 5.3 -1.7 | 98.5 -0.5 | close | 350 W vs 700 W: lower power handling · Xmax 5.3 mm < 7 mm: lower excursion-limited SPL | + |
| B&C 12NDL88 | 51 = | 0.27 +0.03 | 52 -6 | 8 +1 | 98 -1 | close | + | |
| Oberton 12B450 | 46.29 -4.71 | 0.235 -0.01 | 71.75 +13.75 | 7.75 +0.75 | 99 = | close | 450 W vs 700 W: lower power handling | + |
| 18 Sound 12W750 | 55 +4 | 0.27 +0.03 | 58 = | 7 = | 97 -2 | close | 4 Ω vs 8 Ω: amp load changes | + |
Compare the closest 3 against the 12MC700Nd →
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.