Ciare PW390
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 37 Hz |
| Qts | 0.29 |
| Qes | 0.3 |
| Qms | 12.4 |
| Vas | 225 L |
| Sd | 855 cm² |
| Xmax | 3.8 mm |
| Re | 5.4 Ω |
| Bl | 18.8 T·m |
| Mms | 85.2 g |
| Pe | 500 W |
| Sensitivity | 97.6 dB |
Alignment hint
| EBP | 123 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 45.5 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 |
|---|---|---|---|---|---|---|---|---|
| RCF L18S800 | 39 +2 | 0.29 = | 206 -19 | 5 +1.2 | 97.9 +0.3 | close | 300 W vs 500 W: lower power handling | + |
| PD PD 185N002 | 36 -1 | 0.297 +0.01 | 226 +1 | 7.8 +4 | 98.7 +1.1 | close | + | |
| Precision Devices PD 185N002 | 36 -1 | 0.297 +0.01 | 226 +1 | 7.8 +4 | 98.7 +1.1 | close | + | |
| PD PD 188 | 37.4 +0.4 | 0.279 -0.01 | 224.4 -0.6 | 6 +2.2 | 99.6 +2 | close | + | |
| Precision Devices PD 188 | 37.4 +0.4 | 0.279 -0.01 | 224.4 -0.6 | 6 +2.2 | 99.6 +2 | close | + | |
| Precision Devices PD188 | 37.409 +0.41 | 0.28 -0.01 | 224.419 -0.58 | 9.5 +5.7 | 98.5 +0.9 | close | + | |
| Oberton 18FBR700 | 35.56 -1.44 | 0.271 -0.02 | 231.3 +6.3 | 8 +4.2 | 98 +0.4 | close | + | |
| Monacor SP-18/1000HP | 35 -2 | 0.282 -0.01 | 219 -6 | 7.9 +4.1 | 98.8 +1.2 | close | + | |
| LaVoce SAF184.01 | 33 -4 | 0.299 +0.01 | 221 -4 | 6.8 +3 | 98.2 +0.6 | close | + | |
| SICA 18 F 4 CP | 38 +1 | 0.29 = | 185.2 -39.8 | 6.2 +2.4 | 97 -0.6 | close | + |
Compare the closest 3 against the PW390 →
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.