Focal 33A
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 47.4 Hz |
| Qts | 0.575 |
| Qes | 0.65 |
| Qms | 5 |
| Vas | 27.1 L |
| Sd | 530.9 cm² |
| Xmax | 3.8 mm |
| Re | 3.3 Ω |
| Bl | 15.8 T·m |
| Mms | 164.5 g |
| Pe | 300 W |
| Sensitivity | 92.3 dB |
Alignment hint
| EBP | 73 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 52.9 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 |
|---|---|---|---|---|---|---|---|---|
| Monacor RAPTOR 12 | 43 -4.4 | 0.624 +0.05 | 27.5 +0.4 | 8.5 +4.7 | 90.7 -1.6 | close | + | |
| Monacor RAPTOR 12 v2014 | 43 -4.4 | 0.545 -0.03 | 22.5 -4.6 | 7.7 +3.9 | 90.7 -1.6 | usable | + | |
| Faital PRO 12RS1066 | 45 -2.4 | 0.44 -0.13 | 28.4 +1.3 | 12.45 +8.65 | 92 -0.3 | usable | 16 Ω vs 4 Ω: amp load changes | + |
| Monacor RAPTOR 12 v2014 2 | 43 -4.4 | 0.548 -0.03 | 17.8 -9.3 | 6.8 +3 | 91.6 -0.7 | usable | + | |
| Pioneer TS-W3003D4 | 35 -12.4 | 0.588 +0.01 | 34.6 +7.5 | 6.2 +2.4 | 91.8 -0.5 | usable | + | |
| B&C 12 BG 76 | 44 -3.4 | 0.409 -0.17 | 32 +4.9 | 5.1 +1.3 | 91.6 -0.7 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| Faital PRO 12XL1200 | 50 +2.6 | 0.42 -0.15 | 25 -2.1 | 12.45 +8.65 | 93 +0.7 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| DC Audio LV4 D2 | 35.9 -11.5 | 0.5 -0.07 | 30.6 +3.5 | 11 +7.2 | 92.2 -0.1 | usable | + | |
| Focal 13W 7653 | 46 -1.4 | 0.391 -0.18 | 30.9 +3.8 | 4.2 +0.4 | 94.5 +2.2 | usable | + | |
| Fountek FW300DV | 39 -8.4 | 0.49 -0.08 | 39.6 +12.5 | 4.6 +0.8 | 92.1 -0.2 | usable | + |
Compare the closest 3 against the 33A →
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.