18 Sound 18LW1400
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 31 Hz |
| Qts | 0.29 |
| Qes | 0.31 |
| Qms | 7.2 |
| Vas | 297 L |
| Sd | 1225 cm² |
| Xmax | 9 mm |
| Re | 5 Ω |
| Bl | 24.7 T·m |
| Mms | 190 g |
| Pe | 1000 W |
| Sensitivity | 98 dB |
Alignment hint
| EBP | 100 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 60.1 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 |
|---|---|---|---|---|---|---|---|---|
| B&C 18 TBX 46 | 31 = | 0.277 -0.01 | 270 -27 | 9 = | 98.2 +0.2 | close | + | |
| RCF LF18G401 | 33 +2 | 0.29 = | 268 -29 | 9 = | 98 = | close | + | |
| RCF LF18G908 | 33 +2 | 0.29 = | 268 -29 | 9 = | 98 = | close | + | |
| 18 Sound 18ND9300 | 30 -1 | 0.28 -0.01 | 322 +25 | 9.5 +0.5 | 98.8 +0.8 | close | + | |
| PD PD 18BR40 | 30 -1 | 0.32 +0.03 | 309 +12 | 9.3 +0.3 | 98 = | close | 700 W vs 1000 W: lower power handling | + |
| Precision Devices PD 18BR40 | 30 -1 | 0.32 +0.03 | 309 +12 | 9.3 +0.3 | 98 = | close | 700 W vs 1000 W: lower power handling | + |
| RCF LF 18X401 | 30 -1 | 0.298 +0.01 | 274 -23 | 11.4 +2.4 | 97.5 -0.5 | close | + | |
| RCF LF18X401 | 30 -1 | 0.3 +0.01 | 274 -23 | 12 +3 | 97.5 -0.5 | close | + | |
| RCF LF18Y402 | 30 -1 | 0.3 +0.01 | 274 -23 | 12 +3 | 97.5 -0.5 | close | + | |
| 18 Sound 18NLW9300 | 30 -1 | 0.28 -0.01 | 316 +19 | 8 -1 | 98.7 +0.7 | close | Xmax 8 mm < 9 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 18LW1400 →
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.