18 Sound 18NLW4500
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 4 Ω |
| Fs | 37 Hz |
| Qts | 0.31 |
| Qes | 0.32 |
| Qms | 10.8 |
| Vas | 127 L |
| Sd | 1225 cm² |
| Xmax | 14.75 mm |
| Re | 3.3 Ω |
| Bl | 26.7 T·m |
| Mms | 296 g |
| Pe | 1800 W |
| Sensitivity | 96.5 dB |
Alignment hint
| EBP | 116 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 30.2 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Sound 18NLW9601 | 39 +2 | 0.28 -0.03 | 120 -7 | 14 -0.75 | 96 -0.5 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 14 mm < 14.75 mm: lower excursion-limited SPL | + |
| 18 Sound 18NLW4500 | 35 -2 | 0.33 +0.02 | 151 +24 | 15.3 +0.55 | 97 +0.5 | close | 8 Ω vs 4 Ω: amp load changes | + |
| B&C 18SW115 | 34 -3 | 0.3 -0.01 | 149.1 +22.1 | 14 -0.75 | 96 -0.5 | close | Xmax 14 mm < 14.75 mm: lower excursion-limited SPL | + |
| 18 Sound 18NLW9601 | 38 +1 | 0.28 -0.03 | 111 -16 | 14 -0.75 | 96 -0.5 | close | Xmax 14 mm < 14.75 mm: lower excursion-limited SPL | + |
| B&C 18DS100 | 34 -3 | 0.29 -0.02 | 155 +28 | 14.5 -0.25 | 97.5 +1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 14.5 mm < 14.75 mm: lower excursion-limited SPL | + |
| 18 Sound 18NLW9601C | 38 +1 | 0.34 +0.03 | 99 -28 | 14 -0.75 | 95 -1.5 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 14 mm < 14.75 mm: lower excursion-limited SPL | + |
| Oberton 18XB1301DS | 35.7 -1.3 | 0.302 -0.01 | 172.9 +45.9 | 12 -2.75 | 97.5 +1 | usable | 8 Ω vs 4 Ω: amp load changes · 1300 W vs 1800 W: lower power handling · Xmax 12 mm < 14.75 mm: lower excursion-limited SPL | + |
| Oberton 18NXB1600 | 32.37 -4.63 | 0.303 -0.01 | 173.11 +46.11 | 13.5 -1.25 | 97 +0.5 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 13.5 mm < 14.75 mm: lower excursion-limited SPL | + |
| Eminence NSW4018-8 | 36 -1 | 0.38 +0.07 | 164.49 +37.49 | 15.21 +0.46 | 96.6 +0.1 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| 18 Sound 18NTLW5000 | 32 -5 | 0.3 -0.01 | 165 +38 | 17.5 +2.75 | 95 -1.5 | usable | + |
Compare the closest 3 against the 18NLW4500 →
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.