18 Sound 15ND730
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 44 Hz |
| Qts | 0.29 |
| Qes | 0.3 |
| Qms | 8.1 |
| Vas | 156 L |
| Sd | 900 cm² |
| Xmax | 6.5 mm |
| Re | 5.5 Ω |
| Bl | 21 T·m |
| Mms | 86 g |
| Pe | 400 W |
| Sensitivity | 99 dB |
Alignment hint
| EBP | 147 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 31.5 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 |
|---|---|---|---|---|---|---|---|---|
| Fane FC-154F01 | 41 -3 | 0.287 = | 151 -5 | 6.5 = | 99.1 +0.1 | close | + | |
| Oberton 15B450 / 15B450A / 15B450A2 | 45.08 +1.08 | 0.286 = | 146.85 -9.15 | 6.75 +0.25 | 100 +1 | close | + | |
| B&C 15NDL88 | 41 -3 | 0.28 -0.01 | 154 -2 | 8 +1.5 | 99 = | close | 4 Ω vs 8 Ω: amp load changes | + |
| Dayton Audio APOLLO 15N | 44 = | 0.329 +0.04 | 154.7 -1.3 | 6.3 -0.2 | 99.3 +0.3 | close | Xmax 6.3 mm < 6.5 mm: lower excursion-limited SPL | + |
| 18 Sound 15NTLW2500 | 45 +1 | 0.3 +0.01 | 143 -13 | 8 +1.5 | 100.5 +1.5 | close | + | |
| Beyma 15MCB700 | 44 = | 0.34 +0.05 | 148 -8 | 7 +0.5 | 99 = | close | + | |
| Faital PRO 15FX560 | 38 -6 | 0.3 +0.01 | 159 +3 | 9.42 +2.92 | 99 = | close | + | |
| JBL 2255H | 39 -5 | 0.303 +0.01 | 170 +14 | 7.1 +0.6 | 98.9 -0.1 | close | + | |
| Sica 15 K 3 PL | 40 -4 | 0.27 -0.02 | 166.1 +10.1 | 6.5 = | 99.7 +0.7 | close | + | |
| Oberton 15B450 | 45.1 +1.1 | 0.285 -0.01 | 146.9 -9.1 | 5.4 -1.1 | 100.3 +1.3 | close | Xmax 5.4 mm < 6.5 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 15ND730 →
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.