B&C 12 NBX 100
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 41 Hz |
| Qts | 0.226 |
| Qes | 0.24 |
| Qms | 3.9 |
| Vas | 51 L |
| Sd | 531 cm² |
| Xmax | 6.6 mm |
| Re | 5.1 Ω |
| Bl | 25.3 T·m |
| Mms | 116.8 g |
| Pe | 1000 W |
| Sensitivity | 95.6 dB |
Alignment hint
| EBP | 171 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 5.8 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 12NBX100 | 41 = | 0.22 -0.01 | 51 = | 10 +3.4 | 96 +0.4 | close | + | |
| Lavoce WAF124.01 | 42 +1 | 0.22 -0.01 | 49 -2 | 9 +2.4 | 93.8 -1.8 | close | + | |
| Lavoce WAN124.01 | 40 -1 | 0.21 -0.02 | 51 = | 8.5 +1.9 | 93.6 -2 | close | + | |
| Sica 12 S 4 PL | 40.4 -0.6 | 0.25 +0.02 | 57 +6 | 7.5 +0.9 | 95.5 -0.1 | close | + | |
| B&C 12NBX100 | 40 -1 | 0.22 -0.01 | 46.5 -4.5 | 10 +3.4 | 94 -1.6 | close | 4 Ω vs 8 Ω: amp load changes | + |
| RCF LF 12X401 | 45 +4 | 0.211 -0.02 | 50 -1 | 6.1 -0.5 | 97 +1.4 | close | Xmax 6.1 mm < 6.6 mm: lower excursion-limited SPL | + |
| SICA 12 K 4 PL 2000W | 48 +7 | 0.24 +0.01 | 46.3 -4.7 | 7 +0.4 | 94.9 -0.7 | close | + | |
| B&C 12NW100 | 42 +1 | 0.2 -0.03 | 44 -7 | 9 +2.4 | 96 +0.4 | close | + | |
| 18 Sound 12NLW9410 | 42 +1 | 0.26 +0.03 | 55 +4 | 11 +4.4 | 95 -0.6 | close | + | |
| B&C 12NDL88-4 | 48 +7 | 0.24 +0.01 | 57 +6 | 8 +1.4 | 95.9 +0.3 | close | 4 Ω vs 8 Ω: amp load changes · 700 W vs 1000 W: lower power handling | + |
Compare the closest 3 against the 12 NBX 100 →
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.