Selenium TORNADO 18SW3A
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 4 Ω |
| Fs | 41 Hz |
| Qts | 0.55 |
| Qes | 0.57 |
| Qms | 17.8 |
| Vas | 126.3 L |
| Sd | 1189 cm² |
| Xmax | 7.8 mm |
| Re | 3.2 Ω |
| Bl | 18.7 T·m |
| Mms | 239.4 g |
| Pe | 1100 W |
| Sensitivity | 93.7 dB |
Alignment hint
| EBP | 72 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 193.4 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 |
|---|---|---|---|---|---|---|---|---|
| JBL 18SWT3000(TORNADO) | 41 = | 0.55 = | 126 -0.3 | 10.6 +2.8 | 93.7 = | close | + | |
| LaVoce SAF184.04 | 37 -4 | 0.474 -0.08 | 143 +16.7 | 9.3 +1.5 | 95.2 +1.5 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| Faital PRO 18HP1030-8 vp non rodé | 46.3 +5.3 | 0.587 +0.04 | 101 -25.3 | 7.3 -0.5 | 96.1 +2.4 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 7.3 mm < 7.8 mm: lower excursion-limited SPL | + |
| Selenium VULCANO 3.8 18SWV3.8 | 47.4 +6.4 | 0.5 -0.05 | 100.1 -26.2 | 11 +3.2 | 94.8 +1.1 | usable | + | |
| Celestion CF1840JD | 44.2 +3.2 | 0.444 -0.11 | 113.9 -12.4 | 8.5 +0.7 | 96.8 +3.1 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| P.Audio R18/100B | 50.7 +9.7 | 0.546 = | 118.1 -8.2 | 5.9 -1.9 | 97.1 +3.4 | usable | 8 Ω vs 4 Ω: amp load changes · 800 W vs 1100 W: lower power handling · Xmax 5.9 mm < 7.8 mm: lower excursion-limited SPL | + |
| Sica 18 PF 4 | 38 -3 | 0.43 -0.12 | 147.3 +21 | 8 +0.2 | 96.3 +2.6 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| PD PD 186/2 | 34.2 -6.8 | 0.523 -0.03 | 192.2 +65.9 | 8.7 +0.9 | 94.5 +0.8 | usable | 8 Ω vs 4 Ω: amp load changes · 700 W vs 1100 W: lower power handling | + |
| Precision Devices PD 186/2 | 34.2 -6.8 | 0.523 -0.03 | 192.2 +65.9 | 8.7 +0.9 | 94.5 +0.8 | usable | 8 Ω vs 4 Ω: amp load changes · 700 W vs 1100 W: lower power handling | + |
| P.Audio SD18-1700EL | 42 +1 | 0.59 +0.04 | 99.72 -26.58 | 4.8 -3 | 92.6 -1.1 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 4.8 mm < 7.8 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the TORNADO 18SW3A →
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 (5)
- FK BR 18 4Ohmsubbass reflex
- FK BR 18x2Bsubbass reflex
- FK Kick BR 18kickbass reflex
- FK Kick Imgkickbass reflex
- FK Kick Scoop 18kickscoop