Focal 33VX
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 34 Hz |
| Qts | 0.322 |
| Qes | 0.33 |
| Qms | 12.7 |
| Vas | 66.5 L |
| Sd | 510.7 cm² |
| Xmax | 6.4 mm |
| Re | 3.4 Ω |
| Bl | 16.3 T·m |
| Mms | 120.5 g |
| Pe | 350 W |
| Sensitivity | 94.7 dB |
Alignment hint
| EBP | 103 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 17.4 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 |
|---|---|---|---|---|---|---|---|---|
| Pioneer TS-W305C (prodance) | 34 = | 0.311 -0.01 | 54 -12.5 | 6.8 +0.4 | 94.5 -0.2 | close | + | |
| Focal 33WX | 32.5 -1.5 | 0.349 +0.03 | 73.1 +6.6 | 7.1 +0.7 | 94.2 -0.5 | close | + | |
| Focal 33WX2 | 32.5 -1.5 | 0.349 +0.03 | 73.1 +6.6 | 7.1 +0.7 | 94.2 -0.5 | close | + | |
| B&C 12 FG 100 4 Ohms | 34 = | 0.32 = | 53 -13.5 | 9.2 +2.8 | 94.3 -0.4 | close | + | |
| PHL Audio 4021 v2026 | 35 +1 | 0.348 +0.03 | 70 +3.5 | 7.5 +1.1 | 92.7 -2 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Precision Devices PD.123C01 | 46 +12 | 0.32 = | 66.82 +0.32 | 7 +0.6 | 94.9 +0.2 | close | 8 Ω vs 4 Ω: amp load changes | + |
| 18 Sound 12NTLS3500 | 41 +7 | 0.34 +0.02 | 63 -3.5 | 7.9 +1.5 | 94.5 -0.2 | close | + | |
| Eminence IMPERO 12 A | 42.8 +8.8 | 0.322 = | 70.2 +3.7 | 6.2 -0.2 | 95.8 +1.1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 6.2 mm < 6.4 mm: lower excursion-limited SPL | + |
| Magnat XTC300 | 30 -4 | 0.317 -0.01 | 81 +14.5 | 6.9 +0.5 | 93.8 -0.9 | close | + | |
| BMS 12N804 | 39 +5 | 0.29 -0.03 | 71 +4.5 | 8 +1.6 | 95 +0.3 | close | 8 Ω vs 4 Ω: amp load changes | + |
Compare the closest 3 against the 33VX →
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.