18 Sound 18iD200
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 2 Ω |
| Fs | 29 Hz |
| Qts | 0.17 |
| Qes | 0.18 |
| Qms | 7 |
| Vas | 136 L |
| Sd | 1225 cm² |
| Xmax | 18 mm |
| Re | 1.3 Ω |
| Bl | 24.4 T·m |
| Mms | 444 g |
| Pe | 1800 W |
| Sensitivity | 95 dB |
Alignment hint
| EBP | 161 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 8.3 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 18iDSDS | 29 = | 0.17 = | 136 = | 18 = | 95 = | close | + | |
| B&C 18DS115 | 30 +1 | 0.17 = | 177 +41 | 16.5 -1.5 | 97 +2 | close | 4 Ω vs 2 Ω: amp load changes · Xmax 16.5 mm < 18 mm: lower excursion-limited SPL | + |
| B&C 18DS115 | 30 +1 | 0.2 +0.03 | 168 +32 | 16.5 -1.5 | 98 +3 | usable | 8 Ω vs 2 Ω: amp load changes · Xmax 16.5 mm < 18 mm: lower excursion-limited SPL | + |
| B&C 18IPAL | 32 +3 | 0.14 -0.03 | 164 +28 | 20 +2 | 97 +2 | usable | + | |
| B&C 18RS115 | 33 +4 | 0.22 +0.05 | 125 -11 | 23.5 +5.5 | 97.4 +2.4 | usable | 8 Ω vs 2 Ω: amp load changes | + |
| B&C 18DS100 | 32 +3 | 0.24 +0.07 | 157 +21 | 14 -4 | 98 +3 | usable | 4 Ω vs 2 Ω: amp load changes · Xmax 14 mm < 18 mm: lower excursion-limited SPL | + |
| 18 Sound 18NTLW5000 | 32 +3 | 0.3 +0.13 | 165 +29 | 17.5 -0.5 | 95 = | usable | 4 Ω vs 2 Ω: amp load changes · Xmax 17.5 mm < 18 mm: lower excursion-limited SPL | + |
| Beyma 18QLEX1600Fe | 30 +1 | 0.23 +0.06 | 195 +59 | 13 -5 | 97 +2 | usable | 8 Ω vs 2 Ω: amp load changes · Xmax 13 mm < 18 mm: lower excursion-limited SPL | + |
| Precision Devices PD1850 | 30 +1 | 0.21 +0.04 | 249 +113 | 16 -2 | 98 +3 | usable | 8 Ω vs 2 Ω: amp load changes · 800 W vs 1800 W: lower power handling · Xmax 16 mm < 18 mm: lower excursion-limited SPL | + |
| Beyma 18QLEX1600Fe | 31 +2 | 0.25 +0.08 | 177.2 +41.2 | 13 -5 | 96 +1 | usable | 4 Ω vs 2 Ω: amp load changes · Xmax 13 mm < 18 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 18iD200 →
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.