Audax PR33LXT250
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 48.6 Hz |
| Qts | 0.311 |
| Qes | 0.32 |
| Qms | 10.8 |
| Vas | 55 L |
| Sd | 530 cm² |
| Xmax | 3.9 mm |
| Re | 5.8 Ω |
| Bl | 20.6 T·m |
| Mms | 76.8 g |
| Pe | 250 W |
| Sensitivity | 96.3 dB |
Alignment hint
| EBP | 152 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 13.2 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 |
|---|---|---|---|---|---|---|---|---|
| DAS Audio 12H | 48 -0.6 | 0.302 -0.01 | 57 +2 | 5.9 +2 | 96.1 -0.2 | close | + | |
| Mercuriale PAR 312 M0 | 49 +0.4 | 0.323 +0.01 | 59.9 +4.9 | 3.4 -0.5 | 96 -0.3 | close | Xmax 3.4 mm < 3.9 mm: lower excursion-limited SPL | + |
| B&C 12FL76 | 50 +1.4 | 0.3 -0.01 | 57 +2 | 6 +2.1 | 97.5 +1.2 | close | + | |
| Precision Devices PD 12SB30 | 50.2 +1.6 | 0.297 -0.01 | 59 +4 | 4.8 +0.9 | 97.4 +1.1 | close | + | |
| McCauley 6234 | 50 +1.4 | 0.297 -0.01 | 60 +5 | 4.2 +0.3 | 97.8 +1.5 | close | + | |
| Selenium WPU1205 | 46 -2.6 | 0.331 +0.02 | 57 +2 | 4.3 +0.4 | 94.9 -1.4 | close | + | |
| 18 Sound 12LW1400 | 45 -3.6 | 0.3 -0.01 | 55 = | 8.25 +4.35 | 96 -0.3 | close | + | |
| Eminence LA12850 | 46 -2.6 | 0.312 = | 66.1 +11.1 | 5 +1.1 | 96.4 +0.1 | close | + | |
| 18 Sound 12NTLW2500 | 52 +3.4 | 0.31 = | 52.7 -2.3 | 7.6 +3.7 | 97.5 +1.2 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Precision Devices PD 123C01 | 46 -2.6 | 0.314 = | 66.8 +11.8 | 5.6 +1.7 | 96.4 +0.1 | close | + |
Compare the closest 3 against the PR33LXT250 →
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.