RCF LF18N405
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 30 Hz |
| Qts | 0.32 |
| Qes | 0.34 |
| Qms | 7 |
| Vas | 227 L |
| Sd | 1200 cm² |
| Xmax | 14 mm |
| Re | 4.9 Ω |
| Bl | 26.5 T·m |
| Mms | 261 g |
| Pe | 1500 W |
| Sensitivity | 97 dB |
Alignment hint
| EBP | 88 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 58.5 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 |
|---|---|---|---|---|---|---|---|---|
| RCF LF18N408 | 30 = | 0.33 +0.01 | 193 -34 | 15 +1 | 97 = | close | + | |
| RCF LF 18N405 | 30 = | 0.324 = | 227 = | 10.8 -3.2 | 96.7 -0.3 | close | Xmax 10.8 mm < 14 mm: lower excursion-limited SPL | + |
| RCF LF18X451 | 30 = | 0.28 -0.04 | 220 -7 | 14 = | 97 = | close | + | |
| 18 Sound 18NLW9000 | 34 +4 | 0.31 -0.01 | 206 -21 | 14 = | 97 = | close | + | |
| Lavoce SAF184.03 | 30 = | 0.32 = | 260 +33 | 13 -1 | 94.9 -2.1 | close | Xmax 13 mm < 14 mm: lower excursion-limited SPL | + |
| Faital PRO 18XL1700 | 28 -2 | 0.28 -0.04 | 227 = | 16.17 +2.17 | 97 = | close | + | |
| BMS 18N850vv2 | 29.8 -0.2 | 0.33 +0.01 | 243 +16 | 12 -2 | 95 -2 | close | Xmax 12 mm < 14 mm: lower excursion-limited SPL | + |
| Faital PRO 18XL1600 | 32 +2 | 0.31 -0.01 | 201.1 -25.9 | 12.92 -1.08 | 98 +1 | close | 4 Ω vs 8 Ω: amp load changes · Xmax 12.92 mm < 14 mm: lower excursion-limited SPL | + |
| B&C 18SW115 | 32 +2 | 0.3 -0.02 | 187 -40 | 14 = | 97 = | close | + | |
| Faital PRO 18XL2000 | 28 -2 | 0.27 -0.05 | 232.1 +5.1 | 16.32 +2.32 | 97 = | close | + |
Compare the closest 3 against the LF18N405 →
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.