B&C 12 FW 76
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 54 Hz |
| Qts | 0.172 |
| Qes | 0.18 |
| Qms | 3.8 |
| Vas | 45 L |
| Sd | 522 cm² |
| Xmax | 3.3 mm |
| Re | 5.1 Ω |
| Bl | 26.6 T·m |
| Mms | 73.7 g |
| Pe | 500 W |
| Sensitivity | 99.9 dB |
Alignment hint
| EBP | 300 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 2.8 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 12FW76 | 54 = | 0.18 +0.01 | 45 = | 7 +3.7 | 100 +0.1 | close | + | |
| B&C 12FW76 | 54 = | 0.18 +0.01 | 48.5 +3.5 | 7 +3.7 | 99 -0.9 | close | 4 Ω vs 8 Ω: amp load changes | + |
| RCF CX 12N351 V2017 | 58 +4 | 0.202 +0.03 | 47 +2 | 3.6 +0.3 | 99.8 -0.1 | close | + | |
| 18 Sound 12NMB1000 | 54 = | 0.19 +0.02 | 58 +13 | 3.5 +0.2 | 102 +2.1 | usable | + | |
| RCF CX12N351 | 58 +4 | 0.2 +0.03 | 47 +2 | 6 +2.7 | 98.2 -1.7 | usable | 90 W vs 500 W: lower power handling | + |
| RCF MB 12N405 | 52 -2 | 0.203 +0.03 | 53 +8 | 5.7 +2.4 | 99.5 -0.4 | usable | + | |
| RCF MB 12N407 | 48 -6 | 0.194 +0.02 | 50 +5 | 4.7 +1.4 | 98.4 -1.5 | usable | + | |
| RCF MB12N407 | 48 -6 | 0.194 +0.02 | 50 +5 | 4.7 +1.4 | 98.4 -1.5 | usable | + | |
| BMS 12C362 | 47.5 -6.5 | 0.182 +0.01 | 56.5 +11.5 | 4.4 +1.1 | 98.5 -1.4 | usable | + | |
| Precision Devices PD121 | 59 +5 | 0.201 +0.03 | 54 +9 | 5 +1.7 | 100 +0.1 | usable | 16 Ω vs 8 Ω: amp load changes · 300 W vs 500 W: lower power handling | + |
Compare the closest 3 against the 12 FW 76 →
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.