Focal 33F
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 36.5 Hz |
| Qts | 0.712 |
| Qes | 0.76 |
| Qms | 11.3 |
| Vas | 95.5 L |
| Sd | 510.7 cm² |
| Xmax | 6 mm |
| Re | 3 Ω |
| Bl | 8.1 T·m |
| Mms | 72.8 g |
| Pe | 300 W |
| Sensitivity | 94.1 dB |
Alignment hint
| EBP | 48 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | Qts too high |
EBP < 50: favours a sealed (closed) 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 |
|---|---|---|---|---|---|---|---|---|
| Focal 13V 7501 | 36.5 = | 0.712 = | 97.3 +1.8 | 6.8 +0.8 | 94.2 +0.1 | close | 175 W vs 300 W: lower power handling | + |
| Pioneer TS-W302F | 33.4 -3.1 | 0.6 -0.11 | 105.6 +10.1 | 6 = | 94.3 +0.2 | close | 150 W vs 300 W: lower power handling | + |
| JL Audio 12IB4 | 40.5 +4 | 0.631 -0.08 | 112.4 +16.9 | 6 = | 93.6 -0.5 | close | 8 Ω vs 4 Ω: amp load changes · 125 W vs 300 W: lower power handling | + |
| AE Speakers LO12-D16 | 41.9 +5.4 | 0.67 -0.04 | 119.7 +24.2 | 7.4 +1.4 | 94.1 = | usable | 8 Ω vs 4 Ω: amp load changes · 200 W vs 300 W: lower power handling | + |
| SB Audience BIANCO-120B150 | 44 +7.5 | 0.623 -0.09 | 103.8 +8.3 | 6.8 +0.8 | 93.5 -0.6 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| Selenium 12SW10A DVC | 36 -0.5 | 0.665 -0.05 | 63.6 -31.9 | 7 +1 | 94.7 +0.6 | usable | 2 Ω vs 4 Ω: amp load changes | + |
| Infinity 1200WIB vp | 35 -1.5 | 0.789 +0.08 | 116 +20.5 | 5.1 -0.9 | 92.8 -1.3 | usable | Xmax 5.1 mm < 6 mm: lower excursion-limited SPL | + |
| Pioneer TS-W300R | 29.5 -7 | 0.646 -0.07 | 93.2 -2.3 | 6.8 +0.8 | 91.6 -2.5 | usable | 150 W vs 300 W: lower power handling | + |
| Visaton WS32AW vp de FREDO51 | 39 +2.5 | 0.765 +0.05 | 115 +19.5 | 5 -1 | 91.5 -2.6 | usable | 8 Ω vs 4 Ω: amp load changes · 150 W vs 300 W: lower power handling · Xmax 5 mm < 6 mm: lower excursion-limited SPL | + |
| AE Speakers LO12-D8 v2016 | 41.9 +5.4 | 0.67 -0.04 | 117.9 +22.4 | 7.4 +1.4 | 97.1 +3 | usable | 200 W vs 300 W: lower power handling | + |
Compare the closest 3 against the 33F →
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.