18 Sound 15ND940
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 4 Ω |
| Fs | 39 Hz |
| Qts | 0.26 |
| Qes | 0.27 |
| Qms | 9.1 |
| Vas | 170 L |
| Sd | 881 cm² |
| Xmax | 9.5 mm |
| Re | 2.8 Ω |
| Bl | 16.6 T·m |
| Mms | 110 g |
| Pe | 600 W |
| Sensitivity | 99 dB |
Alignment hint
| EBP | 144 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 26.6 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 15ND940 | 38 -1 | 0.28 +0.02 | 174 +4 | 9.5 = | 99 = | close | 8 Ω vs 4 Ω: amp load changes | + |
| 18 Sound 15NLW9300 v2015 | 39 = | 0.263 = | 170 = | 7.2 -2.3 | 98.9 -0.1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.2 mm < 9.5 mm: lower excursion-limited SPL | + |
| 18 Sound 15NLW9300 | 39 = | 0.26 = | 170 = | 8 -1.5 | 97 -2 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 8 mm < 9.5 mm: lower excursion-limited SPL | + |
| B&C 15PS76-8 | 38 -1 | 0.26 = | 164 -6 | 7.5 -2 | 99 = | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.5 mm < 9.5 mm: lower excursion-limited SPL | + |
| Faital PRO 15FX560 | 38 -1 | 0.3 +0.04 | 159 -11 | 9.42 -0.08 | 99 = | close | 8 Ω vs 4 Ω: amp load changes · Xmax 9.42 mm < 9.5 mm: lower excursion-limited SPL | + |
| Faital PRO 15FH510 | 35 -4 | 0.26 = | 191.8 +21.8 | 9.25 -0.25 | 98 -1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 9.25 mm < 9.5 mm: lower excursion-limited SPL | + |
| 18 Sound 15NLW9401 | 39 = | 0.26 = | 134 -36 | 10 +0.5 | 97.5 -1.5 | close | 8 Ω vs 4 Ω: amp load changes | + |
| BMS 15N830V2 | 39.5 +0.5 | 0.27 +0.01 | 159 -11 | 8 -1.5 | 97.1 -1.9 | close | 6 Ω vs 4 Ω: amp load changes · Xmax 8 mm < 9.5 mm: lower excursion-limited SPL | + |
| Fane COLOSSUS 15XBN | 38 -1 | 0.279 +0.02 | 168 -2 | 7.5 -2 | 98.1 -0.9 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.5 mm < 9.5 mm: lower excursion-limited SPL | + |
| RCF LF15G401 | 36 -3 | 0.26 = | 150 -20 | 9 -0.5 | 97 -2 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 9 mm < 9.5 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 15ND940 →
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.