Sica 18 PF 4
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 38 Hz |
| Qts | 0.43 |
| Qes | 0.47 |
| Qms | 6.46 |
| Vas | 147.3 L |
| Sd | 1164.2 cm² |
| Xmax | 8 mm |
| Re | 5.2 Ω |
| Bl | 24.6 T·m |
| Mms | 229.2 g |
| Pe | 1200 W |
| Sensitivity | 96.3 dB |
Alignment hint
| EBP | 81 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 86.4 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 |
|---|---|---|---|---|---|---|---|---|
| LaVoce SAF184.02 | 38 = | 0.422 -0.01 | 150 +2.7 | 8.1 +0.1 | 96.9 +0.6 | close | + | |
| LaVoce SAN184.02 | 38 = | 0.406 -0.02 | 150 +2.7 | 7.9 -0.1 | 96.8 +0.5 | close | Xmax 7.9 mm < 8 mm: lower excursion-limited SPL | + |
| DAS Audio 18SX | 39.2 +1.2 | 0.443 +0.01 | 171.9 +24.6 | 8 = | 96.4 +0.1 | close | + | |
| LaVoce SAN184.03 | 36 -2 | 0.417 -0.01 | 160 +12.7 | 9.4 +1.4 | 95.9 -0.4 | close | + | |
| Faital PRO 18HP1030 v2018 | 35 -3 | 0.415 -0.02 | 162.1 +14.8 | 9.5 +1.5 | 96.1 -0.2 | close | + | |
| LaVoce SAF184.04 | 37 -1 | 0.474 +0.04 | 143 -4.3 | 9.3 +1.3 | 95.2 -1.1 | close | + | |
| Faital PRO 18FH1042 | 38 = | 0.413 -0.02 | 150 +2.7 | 5.6 -2.4 | 96.4 +0.1 | close | 500 W vs 1200 W: lower power handling · Xmax 5.6 mm < 8 mm: lower excursion-limited SPL | + |
| SB Audience NERO-18SW1900D | 34 -4 | 0.419 -0.01 | 158 +10.7 | 10.8 +2.8 | 95.4 -0.9 | close | + | |
| SB Audience ROSSO-18SW1000D | 35 -3 | 0.467 +0.04 | 164.3 +17 | 8.2 +0.2 | 95.3 -1 | close | + | |
| Ciare PW 465 ND | 37 -1 | 0.39 -0.04 | 141.16 -6.14 | 11.5 +3.5 | 94.4 -1.9 | close | + |
Compare the closest 3 against the 18 PF 4 →
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.