Focal 38WX4
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 4 Ω |
| Fs | 28.9 Hz |
| Qts | 0.364 |
| Qes | 0.38 |
| Qms | 8.81 |
| Vas | 310.4 L |
| Sd | 855.3 cm² |
| Xmax | 7.7 mm |
| Re | 3 Ω |
| Bl | 12 T·m |
| Mms | 100.5 g |
| Pe | 225 W |
| Sensitivity | 99.2 dB |
Alignment hint
| EBP | 76 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 111.9 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 2216ND (pour JBL 4367) | 28.3 -0.6 | 0.376 +0.01 | 333 +22.6 | 9.5 +1.8 | 96.3 -2.9 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Beyma SM115 vp1 | 35.9 +7 | 0.355 -0.01 | 314.2 +3.8 | 7.3 -0.4 | 98.5 -0.7 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.3 mm < 7.7 mm: lower excursion-limited SPL | + |
| Beyma SM115 vp2 | 35.4 +6.5 | 0.365 = | 295.8 -14.6 | 7.3 -0.4 | 98.2 -1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.3 mm < 7.7 mm: lower excursion-limited SPL | + |
| Beyma SM115 vp4 | 35.5 +6.6 | 0.339 -0.02 | 310.6 +0.2 | 7.3 -0.4 | 99 -0.2 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.3 mm < 7.7 mm: lower excursion-limited SPL | + |
| Eminence EMINATOR 2515 | 28.7 -0.2 | 0.367 = | 274.8 -35.6 | 6 -1.7 | 97.6 -1.6 | close | Xmax 6 mm < 7.7 mm: lower excursion-limited SPL | + |
| TAD TL-1601 B | 28 -0.9 | 0.342 -0.02 | 307 -3.4 | 6.8 -0.9 | 95.5 -3.7 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 6.8 mm < 7.7 mm: lower excursion-limited SPL | + |
| PHL Audio 5510MNds | 30 +1.1 | 0.324 -0.04 | 293 -17.4 | 8.7 +1 | 96.6 -2.6 | close | 8 Ω vs 4 Ω: amp load changes | + |
| JBL GT 152 | 24 -4.9 | 0.393 +0.03 | 319 +8.6 | 7.6 -0.1 | 97.9 -1.3 | close | Xmax 7.6 mm < 7.7 mm: lower excursion-limited SPL | + |
| TAD TL-1603 | 28 -0.9 | 0.342 -0.02 | 304 -6.4 | 6.8 -0.9 | 95.5 -3.7 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 6.8 mm < 7.7 mm: lower excursion-limited SPL | + |
| JBL 2216ND-1 | 27.6 -1.3 | 0.357 -0.01 | 378.4 +68 | 9.5 +1.8 | 96.8 -2.4 | close | 8 Ω vs 4 Ω: amp load changes | + |
Compare the closest 3 against the 38WX4 →
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.