18 Sound 18NLS4000
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 4 Ω |
| Fs | 27 Hz |
| Qts | 0.35 |
| Qes | 0.36 |
| Qms | 13.7 |
| Vas | 168 L |
| Sd | 1225 cm² |
| Xmax | 22.3 mm |
| Re | 2.9 Ω |
| Bl | 24.2 T·m |
| Mms | 433 g |
| Pe | 1200 W |
| Sensitivity | 88 dB |
Alignment hint
| EBP | 75 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 54.5 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Sound 18NTLW5000 | 32 +5 | 0.32 -0.03 | 176 +8 | 17.5 -4.8 | 95 +7 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 17.5 mm < 22.3 mm: lower excursion-limited SPL | + |
| Faital PRO 18XL1800 | 29 +2 | 0.4 +0.05 | 215.5 +47.5 | 20.17 -2.13 | 95 +7 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 20.17 mm < 22.3 mm: lower excursion-limited SPL | + |
| 18 Sound 18NTLW5000 | 32 +5 | 0.3 -0.05 | 165 -3 | 17.5 -4.8 | 95 +7 | usable | Xmax 17.5 mm < 22.3 mm: lower excursion-limited SPL | + |
| 18 Sound 18NLW4100 | 31 +4 | 0.34 -0.01 | 180 +12 | 15 -7.3 | 96.5 +8.5 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 15 mm < 22.3 mm: lower excursion-limited SPL | + |
| 18 Sound 18TLW3000 | 32 +5 | 0.35 = | 185 +17 | 12 -10.3 | 94 +6 | usable | Xmax 12 mm < 22.3 mm: lower excursion-limited SPL | + |
| RCF LF18N408 | 30 +3 | 0.33 -0.02 | 193 +25 | 15 -7.3 | 97 +9 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 15 mm < 22.3 mm: lower excursion-limited SPL | + |
| Dayton Audio SS18-22 | 21 -6 | 0.374 +0.02 | 224 +56 | 12.8 -9.5 | 90.6 +2.6 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 12.8 mm < 22.3 mm: lower excursion-limited SPL | + |
| BMS 18N862 | 25.1 -1.9 | 0.34 -0.01 | 312 +144 | 19 -3.3 | 95 +7 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 19 mm < 22.3 mm: lower excursion-limited SPL | + |
| Eminence NSW4018-8 | 36 +9 | 0.38 +0.03 | 164.49 -3.51 | 15.21 -7.09 | 96.6 +8.6 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 15.21 mm < 22.3 mm: lower excursion-limited SPL | + |
| Faital PRO 18HW1070 | 32 +5 | 0.33 -0.02 | 191.5 +23.5 | 13 -9.3 | 96 +8 | usable | Xmax 13 mm < 22.3 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 18NLS4000 →
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.