B&C 15 FCX 76
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 40 Hz |
| Qts | 0.445 |
| Qes | 0.47 |
| Qms | 8.3 |
| Vas | 187 L |
| Sd | 855 cm² |
| Xmax | 6.5 mm |
| Re | 5.2 Ω |
| Bl | 15.5 T·m |
| Mms | 86.8 g |
| Pe | 400 W |
| Sensitivity | 97.9 dB |
Alignment hint
| EBP | 85 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 122.6 L |
EBP 50-100: works in either a sealed or ported 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Sound 15W750 | 40 = | 0.42 -0.03 | 182 -5 | 8 +1.5 | 98 +0.1 | close | 16 Ω vs 8 Ω: amp load changes | + |
| Cyrille Audio GM38F76P | 38.8 -1.2 | 0.419 -0.03 | 192.6 +5.6 | 6.6 +0.1 | 97.7 -0.2 | close | + | |
| Beyma 15CXA400Fe | 40 = | 0.419 -0.03 | 191 +4 | 6 -0.5 | 97.6 -0.3 | close | Xmax 6 mm < 6.5 mm: lower excursion-limited SPL | + |
| Beyma SM115 | 42 +2 | 0.405 -0.04 | 185 -2 | 6.7 +0.2 | 98.2 +0.3 | close | + | |
| Selenium 15PW5 | 40 = | 0.4 -0.04 | 190 +3 | 5.7 -0.8 | 98.3 +0.4 | close | Xmax 5.7 mm < 6.5 mm: lower excursion-limited SPL | + |
| Eminence Kl3015CX-8 vp | 38 -2 | 0.438 -0.01 | 219.7 +32.7 | 7.8 +1.3 | 97.5 -0.4 | close | + | |
| Fane SOVEREIGN PRO 15-600 LF | 40 = | 0.364 -0.08 | 188 +1 | 6.9 +0.4 | 97.9 = | close | + | |
| Beyma 15CMV2 | 37 -3 | 0.391 -0.05 | 188 +1 | 6.5 = | 96.8 -1.1 | close | + | |
| BMS 15N630 | 39 -1 | 0.42 -0.03 | 152 -35 | 8 +1.5 | 98 +0.1 | close | + | |
| Eminence KAPPALITE 3015 LF v2014 | 43.7 +3.7 | 0.456 +0.01 | 150.9 -36.1 | 6.6 +0.1 | 97.8 -0.1 | close | + |
Compare the closest 3 against the 15 FCX 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.