18 Sound 18NLW4100
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 4 Ω |
| Fs | 29 Hz |
| Qts | 0.27 |
| Qes | 0.28 |
| Qms | 11.9 |
| Vas | 207 L |
| Sd | 1225 cm² |
| Xmax | 15 mm |
| Re | 2.5 Ω |
| Bl | 22.8 T·m |
| Mms | 314 g |
| Pe | 1500 W |
| Sensitivity | 97 dB |
Alignment hint
| EBP | 104 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 35.3 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 |
|---|---|---|---|---|---|---|---|---|
| Faital PRO 18XL2000 | 28 -1 | 0.27 = | 232.1 +25.1 | 16.32 +1.32 | 97 = | close | 8 Ω vs 4 Ω: amp load changes | + |
| Faital PRO 18XL1700 | 28 -1 | 0.28 +0.01 | 227 +20 | 16.17 +1.17 | 97 = | close | 8 Ω vs 4 Ω: amp load changes | + |
| RCF LF18X451 | 30 +1 | 0.28 +0.01 | 220 +13 | 14 -1 | 97 = | close | 8 Ω vs 4 Ω: amp load changes · Xmax 14 mm < 15 mm: lower excursion-limited SPL | + |
| 18 Sound 18LW2600 | 30 +1 | 0.28 +0.01 | 186 -21 | 14 -1 | 96.5 -0.5 | close | Xmax 14 mm < 15 mm: lower excursion-limited SPL | + |
| 18 Sound 18LW2600 | 31 +2 | 0.29 +0.02 | 187 -20 | 14.8 -0.2 | 96.8 -0.2 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 14.8 mm < 15 mm: lower excursion-limited SPL | + |
| RCF LF 18X451 | 30 +1 | 0.278 +0.01 | 220 +13 | 10.7 -4.3 | 96.8 -0.2 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 10.7 mm < 15 mm: lower excursion-limited SPL | + |
| RCF LF18N408 | 30 +1 | 0.33 +0.06 | 193 -14 | 15 = | 97 = | close | 8 Ω vs 4 Ω: amp load changes | + |
| B&C 18SW115 | 32 +3 | 0.3 +0.03 | 187 -20 | 14 -1 | 97 = | close | 8 Ω vs 4 Ω: amp load changes · Xmax 14 mm < 15 mm: lower excursion-limited SPL | + |
| RCF LF18N405 | 30 +1 | 0.32 +0.05 | 227 +20 | 14 -1 | 97 = | close | 8 Ω vs 4 Ω: amp load changes · Xmax 14 mm < 15 mm: lower excursion-limited SPL | + |
| Beyma 18QLEX1600Fe | 30 +1 | 0.23 -0.04 | 195 -12 | 13 -2 | 97 = | close | 8 Ω vs 4 Ω: amp load changes · Xmax 13 mm < 15 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 18NLW4100 →
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.