B&C 12FW76
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 54 Hz |
| Qts | 0.18 |
| Qes | 0.17 |
| Qms | 4.2 |
| Vas | 48.5 L |
| Sd | 522 cm² |
| Xmax | 7 mm |
| Re | 3.1 Ω |
| Bl | 20.4 T·m |
| Mms | 69.5 g |
| Pe | 500 W |
| Sensitivity | 99 dB |
Alignment hint
| EBP | 318 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 3.4 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 12FW76 | 54 = | 0.18 = | 45 -3.5 | 7 = | 100 +1 | close | 8 Ω vs 4 Ω: amp load changes | + |
| RCF CX12N351 | 58 +4 | 0.2 +0.02 | 47 -1.5 | 6 -1 | 98.2 -0.8 | close | 8 Ω vs 4 Ω: amp load changes · 90 W vs 500 W: lower power handling · Xmax 6 mm < 7 mm: lower excursion-limited SPL | + |
| RCF MB 12N405 | 52 -2 | 0.203 +0.02 | 53 +4.5 | 5.7 -1.3 | 99.5 +0.5 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 5.7 mm < 7 mm: lower excursion-limited SPL | + |
| Sica 12 F 4 CP | 46 -8 | 0.2 +0.02 | 52 +3.5 | 6 -1 | 97.8 -1.2 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 6 mm < 7 mm: lower excursion-limited SPL | + |
| Beyma 12"P80/Fe V2 | 48 -6 | 0.21 +0.03 | 61 +12.5 | 7.5 +0.5 | 99 = | usable | 8 Ω vs 4 Ω: amp load changes | + |
| RCF MB 12N407 | 48 -6 | 0.194 +0.01 | 50 +1.5 | 4.7 -2.3 | 98.4 -0.6 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 4.7 mm < 7 mm: lower excursion-limited SPL | + |
| RCF MB12N407 | 48 -6 | 0.194 +0.01 | 50 +1.5 | 4.7 -2.3 | 98.4 -0.6 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 4.7 mm < 7 mm: lower excursion-limited SPL | + |
| 18 Sound 12ND940 | 49 -5 | 0.2 +0.02 | 64.8 +16.3 | 7.6 +0.6 | 100 +1 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| RCF LF 12N401 | 48 -6 | 0.205 +0.02 | 50 +1.5 | 5.2 -1.8 | 97.8 -1.2 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 5.2 mm < 7 mm: lower excursion-limited SPL | + |
| Beyma 12MC700Nd | 51 -3 | 0.24 +0.06 | 58 +9.5 | 7 = | 99 = | usable | 8 Ω vs 4 Ω: amp load changes | + |
Compare the closest 3 against the 12FW76 →
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.